OAK TREE MEDICAL SYSTEMS INC
10-Q, 1996-10-21
HEALTH SERVICES
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                       SECURITIES AND EXCHANGE COMMISSION
                             Washington, D.C. 20549


                                    FORM 10-Q


     [X] QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(D) OF THE SECURITIES
                              EXCHANGE ACT OF 1934

                 For the quarterly period ended August 31, 1996
                                       OR
     [ ] TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(D) OF THE SECURITIES
                              EXCHANGE ACT OF 1934
         For the transition period from ______________ to _____________

                         Commission file number 0-16206


                         OAK TREE MEDICAL SYSTEMS, INC.
             (Exact name of registrant as specified in the charter)

      DELAWARE                                            02-0401674
(State or other jurisdiction of                         (IRS Employer
incorporation or organization)                         Identification No.)

2 GANNETT DRIVE, SUITE 215
     WHITE PLAINS, NY                                       10604
(Address of principal executive offices)                  (Zip Code)

              (Registrant's telephone number, including area code)
                                 (914) 694-2500

         Indicate by check mark whether the registrant (1) has filed all reports
required to be filed by Section 13 or 15(d) of the  Securities  Exchange  Act of
1934  during  the  preceding  12 months  (or for such  shorter  period  that the
registrant  was required to file such  reports) and (2) has been subject to such
filing requirements for the past 90 days.

                             YES          NO    X


         Indicate number of shares  outstanding of each of the issuer's  classes
of common stock, as of the latest practical date:


Common Stock, $.01 par value                             2,547,921 shares
        Class                                    Outstanding at October 21, 1996



<PAGE>

                         OAK TREE MEDICAL SYSTEMS, INC.

                                      INDEX



                                                                           Pages


PART I   FINANCIAL INFORMATION

         Item 1. Financial Statements

                      Consolidated Balance Sheets as of August 31, 1996
                         and May 31, 1996

                      Consolidated  Statements of  Operations  for
                         the three  months ended August 31, 1996 and 1995

                      Consolidated Statement of Stockholders' Equity
                         for the three months ended August 31, 1996

                      Consolidated Statements of Cash Flows for the three
                         months ended August 31, 1996 and 1995

                      Notes to Consolidated Financial Statements

         Item 2.  Management's Discussion and Analysis of Financial
                      Condition and Results of Operations

PART II  OTHER INFORMATION

         Item 6.  Exhibits and Reports on Form 8-K

SIGNATURES


                                      - 2 -


<PAGE>

<TABLE>
<CAPTION>

                                                                                     OAK TREE MEDICAL SYSTEMS, INC.
                                                                                         Consolidated Balance Sheet
                                                                                                        (UNAUDITED)
                                                                                                               1996

ASSETS                                                                                    August 31,         May 31,

Current Assets
<S>                                                                                    <C>            <C>           
   Cash                                                                                $     106,894  $      292,315
   Patient care receivables, less allowance for possible losses of $1,486,270              3,673,497       3,158,325
   Prepaids and other                                                                         68,621          68,621
- ------------------------------------------------------------------------------------- --------------- ---------------

Total Current Assets                                                                       3,849,012       3,519,261
- ------------------------------------------------------------------------------------- --------------- ---------------

Other Assets
   Investment                                                                              5,000,000       5,000,000
   Property and equipment, net                                                               377,001         394,145
   Deposits and other                                                                         18,657          18,657
   CORF licenses                                                                              40,000          40,000
   Excess of cost over fair value of net assets acquired,
     Less accumulated amortization of $90,071                                              1,221,988       1,252,143
- ------------------------------------------------------------------------------------- --------------- ---------------

Total Other Assets                                                                         6,657,646       6,704,945
- ------------------------------------------------------------------------------------- --------------- ---------------

TOTAL ASSETS                                                                           $  10,508,757  $   10,224,206
===================================================================================== =============== ===============

LIABILITIES AND STOCKHOLDERS' EQUITY

Current Liabilities
   Accounts payable and accrued expenses                                               $     880,950  $      920,363
   Loan payable - other                                                                      432,858         310,623
   Current maturities of debt                                                                138,429         147,846
   Income taxes payable                                                                            0               0
- ------------------------------------------------------------------------------------- --------------- ---------------

Total Current Liabilities                                                                  1,452,237       1,378,832
- ------------------------------------------------------------------------------------- --------------- ---------------

Other Liabilities
   Deferred income tax                                                                       801,575         720,782
   Long-term debt, less current maturities                                                   107,211         128,481
   Obligation to issue shares of common stock                                                349,765         349,765
- ------------------------------------------------------------------------------------- --------------- ---------------

Total Other Liabilities                                                                    1,258,551       1,199,028
- ------------------------------------------------------------------------------------- --------------- ---------------

Commitments and Contingencies

Stockholders' Equity
   Common stock, $.01 par value, 25,000,000 shares
     authorized, 2,529,169 shares issued and outstanding                                      25,292          25,292
   Additional paid-in capital                                                              9,508,549       9,508,549
   Deficit                                                                                (1,735,872)     (1,887,495)
- ------------------------------------------------------------------------------------- --------------- ---------------

Total Stockholders' Equity                                                                 7,797,969       7,646,346
- ------------------------------------------------------------------------------------- --------------- ---------------

TOTAL LIABILITIES AND STOCKHOLDERS' EQUITY                                             $  10,508,757  $   10,224,206
===================================================================================== =============== ===============
         See accompanying  summary of significant  accounting policies and notes to consolidated financial statements.
</TABLE>

                                      - 3 -


<PAGE>
<TABLE>
<CAPTION>


                                                                                     OAK TREE MEDICAL SYSTEMS, INC.

                                                                               Consolidated Statement of Operations
                                                                                                        (UNAUDITED)

                                                                              For The Three Months Ended August 31,

                                                                                              1996              1995
REVENUE
<S>                                                                                  <C>               <C>          
   Net patient services                                                              $   1,002,463     $   1,070,935
- --------------------------------------------------------------------------------- ----------------- -----------------

EXPENSES
   Salaries, personnel leasing, subcontract labor and related costs                        166,427                 0
   Selling, general and administrative                                                     505,512           690,174
   Interest                                                                                 43,072             2,000
   Depreciation and Amortization                                                            44,640            46,250
- --------------------------------------------------------------------------------- ----------------- -----------------

TOTAL EXPENSES                                                                             759,651           738,424
- --------------------------------------------------------------------------------- ----------------- -----------------

INCOME FROM CONTINUING OPERATIONS                                                          242,812           332,511
BEFORE PROVISION FOR INCOME TAXES

PROVISION FOR INCOME TAXES                                                                  91,189           122,000
- --------------------------------------------------------------------------------- ----------------- -----------------

NET INCOME FROM OPERATIONS                                                                 151,623           210,511
- --------------------------------------------------------------------------------- ----------------- -----------------

NET INCOME                                                                           $     151,623     $     210,511
- --------------------------------------------------------------------------------- ----------------- -----------------

INCOME PER COMMON SHARE                                                              $         .06    $         .08
- --------------------------------------------------------------------------------- ----------------- -----------------

Weighted average number of common and common equivalent
   shares outstanding                                                                    2,679,375         2,598,901
================================================================================= ================= =================

See  accompanying  summary  of  significant  accounting  policies  and  notes to consolidated financial statements.
</TABLE>


                                      - 4 -

<PAGE>
<TABLE>
<CAPTION>


                                                                                     OAK TREE MEDICAL SYSTEMS, INC.
                                                                                 Statement of Stockholders' Equity
                                                                                                        (UNAUDITED)

                                                                         For The Three Months Ended August 31, 1996


                                                                     Additional                          Total
                                           Common Stock                Paid-in                       Stockholders'
                                     Shares           Amount           Capital         Deficit           Equity
- -------------------------------- --------------- ----------------- ---------------- --------------- -----------------

<S>                                 <C>         <C>               <C>              <C>             <C>          
Balance May 31, 1996                 2,529,169   $      25,292     $   9,508,549    $  (1,887,495)  $   7,646,346

Net Income                                 -               -                 -            151,623         151,623
- -------------------------------- --------------- ----------------- ---------------- --------------- -----------------

Balance August 31, 1996              2,529,169   $      25,292     $   9,508,549    $  (1,735,872)  $   7,797,969
================================ =============== ================= ================ =============== =================
         See accompanying  summary of significant  accounting policies and notes to consolidated financial statements.
</TABLE>



                                       - 5 -


<PAGE>
<TABLE>
<CAPTION>


                                                                                     OAK TREE MEDICAL SYSTEMS, INC.

                                                                               Consolidated Statement of Cash Flows
                                                                                                        (UNAUDITED)

                                                                              For The Three Months Ended August 31,



                                                                                              1996              1995
- --------------------------------------------------------------------------------- ----------------- -----------------

OPERATING ACTIVITIES

<S>                                                                                  <C>               <C>          
   Net income (loss)                                                                 $     151,623     $     210,511
   Adjustments to reconcile net income (loss) to net cash
     used in operating activities:
     Depreciation and amortization                                                          44,640            46,250
     Change in assets and liabilities:
       (Increase) in patient receivables                                                  (515,172)           (5,488)
       (Increase) in prepaids and other                                                          0            (2,500)
       (Increase) in deposits and other                                                          0              (532) -
       Increase (Decrease) in accounts payable and accrued expenses                        (39,413)         (527,293)
       Increase in income tax payable                                                            0           122,000
       Increase in deferred income tax                                                      80,793                 0
- --------------------------------------------------------------------------------- ----------------- -----------------

NET CASH USED IN OPERATING ACTIVITIES                                                     (277,529)         (157,052)
- --------------------------------------------------------------------------------- ----------------- -----------------

INVESTING ACTIVITIES
   Increase in leasehold improvements                                                         (313)                0
   Purchase of property and equipment                                                       (9,522)                0
   Decrease in excess of cost over fair value of assets acquired                            10,395                 0
- --------------------------------------------------------------------------------- ----------------- -----------------

NET CASH PROVIDED BY INVESTING ACTIVITIES                                                      560                 0
- --------------------------------------------------------------------------------- ----------------- -----------------

FINANCING ACTIVITIES
   Principal payments on borrowings                                                        (30,687)          (26,967)
   Increase in borrowings                                                                  122,235           108,750
- --------------------------------------------------------------------------------- ----------------- -----------------

NET CASH PROVIDED BY FINANCING ACTIVITIES                                                   91,548            81,783
- --------------------------------------------------------------------------------- ----------------- -----------------

NET INCREASE (DECREASE) IN CASH                                                           (185,421)          (75,269)

CASH - Beginning of Period                                                                 292,315           138,196
- --------------------------------------------------------------------------------- ----------------- -----------------


CASH - End of Period                                                                 $     106,894     $      62,927
================================================================================= ================= =================
         See accompanying  summary of significant  accounting policies and notes to consolidated financial statements.
</TABLE>


                                                     - 6 -


<PAGE>

                         OAK TREE MEDICAL SYSTEMS, INC.
                   Notes to Consolidated Financial Statements
                                 August 31, 1996
                                   (Unaudited)



Summary of Significant Accounting Policies

1.   The Accompanying unaudited consolidated financial statements, which are for
     interim  periods,  do not  include all  disclosures  provided in the annual
     consolidated  financial  statements and the footnotes  thereto contained in
     the Annual  Report on form 10-KSB for the year ended May 31,  1996,  of Oak
     Tree Medical Systems,  Inc. (the  "Company"),  as filed with the Securities
     and Exchange  Commission.  The May 31, 1996, balance sheet was derived from
     audited  consolidated  financial  statements,  but  does  not  include  all
     disclosures required by generally accepted accounting principles.

2.   In the opinion of the  Company,  the  accompanying  unaudited  consolidated
     financial  statements  contain  all  adjustments  (which  are  of a  normal
     recurring  nature)  necessary  for a fair  presentation  of  the  financial
     statements. The results of operations for the three months ended August 31,
     1996, are not necessarily  indicative of the results to be expected for the
     full year.


                                      - 7 -


<PAGE>

                         OAK TREE MEDICAL SYSTEMS, INC.
                     Management's Discussion and Analysis of
                  Financial Condition and Results of Operations

General

     The Company is engaged in the  business of owning,  operating  and managing
     physical   therapy   clinics,   comprehensive   outpatient   rehabilitation
     facilities (CORF) and related medical practices. As of August 31, 1996, all
     of the Company's  operations  were in the  Jacksonville,  Florida area. The
     Company operates its various  facilities and practices  through its various
     subsidiaries as required or practical for licensing, operating and managing
     the various aspects of its business.

     In October 1996,  the Company  completed its  acquisition of three New York
     City based physical  therapy centers,  with revenues of approximately  $2.5
     million in their most recent  fiscal year.  In addition,  this  acquisition
     also  included a physical  therapy  management  contract with a Westchester
     County  Community  Hospital.  The  clinics'  assets and related  management
     contracts  were acquired for $900,000 in cash and stock with an agreed upon
     value.

Results of Operations

     Three months  ended  August 31, 1996,  compared to three months ended March
     31, 1995.

     Total revenue for the three months ended August 31, 1996,  was $1,002,463 a
     decrease of $68,472  compared  to total  revenue of  $1,070,935  during the
     prior  comparable   quarter.   This  reduction  in  revenue  resulted  from
     management's  decision to decrease Oak Tree's offsite servicing  activities
     and concentrate on their core physical therapy practices. The quarter ended
     August 31, 1996,  represents the first full quarter of operation in its new
     and expanded  facilities  in  Jacksonville.

     Total operating expenses and costs during the three months ended August 31,
     1996 were  $759,651,  an increase of $21,227,  compared to total  operating
     expenses of $738,424 during the prior comparable quarter.  The increase was
     primarily attributable to increased interest expense, which was $43,072 for
     the three months ended August 31, 1996, as compared to $2,000 for the prior
     comparable quarter. Salaries and similar expenses for the 1995 quarter were
     included in selling, general and administrative expenses for that quarter.

Liquidity and Capital Resources

     The Company has been funding its capital  requirements  with operating cash
     flow and by loans against its accounts receivable. The Company pays fees on
     each  advance and  interest on the  outstanding  balance.  A portion of the
     Company's  accounts  receivable funding was managed by an entity in which a
     former director and one of the Company's  medical  personnel have an equity
     participation.   The  funding  arrangements  with  this  entity  have  been
     terminated.

     In September 1996, the Company through one of its subsidiaries,  obtained a
     term loan in the amount of $400,000 from a bank to fund the  acquisition of
     the New York practices. Interest on this loan is at the lender's prime rate
     plus one percent,  to be fully  repaid by March 31, 1998.  The Company also
     has with the same  bank,  a  revolving  line of  credit  in the  amount  of
     $200,000.

     Also,  in  September  1996,  the  Company  obtained a loan in the amount of
     $1,250,000,  collateralized by $2,600,000 of its accounts receivable.  As a
     part of the terms of the loan, the Company is obligated to repay the lender
     $1,912,500  and  twenty  percent  of the  receivables  collected  over  the
     $1,912,500.  The lender is responsible  for the servicing and collecting of
     the accounts receivable designated as collateral.

     As of August 31,  1996,  the  Company  had  working  capital of  $2,396,775
     compared to working capital of $2,140,429 at May 31, 1996. During the three
     months, net accounts receivable  increased $515,172 over the balance at May
     31, 1996.  Net cash used in operating  activities was $277,529 and $157,052
     for the quarters ended August 31, 1996 and 1995 respectively.

     Other than  completion  of the  acquisition  of the New York  practices the
     Company  has no  outstanding  commitments  for  capital  expenditures.  The
     Company's  primary  goal  at  this  time  is  for  the  integration  of the
     acquisitions into the Company's corporate structure.

     The Company has entered into a warrant  agreement  with a consultant of the
     Company  pursuant  to which the  consultant  has been  granted  warrants to
     acquire  250,000  shares of common stock.  The warrants are  exercisable at
     prices of  between  $5.00 to $7.00 per  share,  and are  subject to certain
     anti-dilution provisions and expire in July 1998.




                                      - 8 -


<PAGE>

PART II  OTHER INFORMATION


   Item 6.   Exhibits and Reports on Form 8-K

   (a)       Reports on Form 8-K

             None.

   (b)       Exhibits

             The following exhibits are filed as part of this report:

   4.1       Term Loan Agreement  dated as of September 30, 1996,  between First
             Union National Bank and Oak Tree Medical Management, Inc.

   4.2       Security Agreement dated as of September 30, 1996, between Oak Tree
             Medical Management, Inc. and First Union National Bank

   4.3       Promissory Note and Promissory Note dated as of September 30, 1996,
             between Oak Tree Medical Management,  Inc. and First Union National
             Bank

   4.4       Unconditional  Guaranty dated as of September 30, 1996, between Oak
             Tree Medical Management,  Inc., Oak Tree Medical Systems,  Inc. and
             First Union National Bank

   4.5       Health Care  Receivables  Loan and Security  Agreement  dated as of
             September 16, 1996, between Oak Tree Receivables, Inc. and Sam Fund
             I, L.P.


                                      - 9 -


<PAGE>



  10.1       Agreement of Sale between  Orthopedic & Sports Therapy  Services of
             Queens,  L.P.,  Parkside  of  Queens,  Inc.  and Oak  Tree  Medical
             Management, Inc.

  10.2       Agreement of Sale between Parkside Physical Therapy Services,  P.C.
             and New Media Practice, P.C.

  10.3       Agreement of Sale between Gary  Danziger,  PTSR,  Inc. and Oak Tree
             Medical Management, Inc.




                                     - 10 -


<PAGE>

                                   SIGNATURES


         Pursuant to the  requirements  of the Securities  Exchange Act of 1934,
the  registrant  has duly  caused  this report to be signed on its behalf by the
undersigned thereto duly authorized.


                                     OAK TREE MEDICAL SYSTEMS, INC.



                                     By:  /s/ William Kedersha
                                          --------------------
                                          William Kedersha
                                          Chief Executive Officer


                                     By:  /s/ 
                                          --------------------

                                          Chief Accounting Officer


Dated:  October 21, 1996


                                     - 11 -

                                 LOAN AGREEMENT


First Union National Bank
50 Main Street
White Plains, New York 10606
(Hereinafter referred to as the "Bank")

Oak Tree Medical Management, Inc.
2 Gannett Drive, Suite 215
White Plains, New York  10601
(Individually and collectively "Borrower")

This Loan  Agreement  ("Agreement")  is entered into  September 30, 1996, by and
between Bank and Borrower, a Corporation organized under the laws of New York.

Borrower has applied to Bank for a loan or loans (individually and collectively,
the "Loan")  evidenced by one or more promissory notes (whether one or more, the
"Note") as follows:

Term Loan - in the  principal  amount of  $400,000.00  which is evidenced by the
Promissory  Note dated  September 30, 1996.  The Loan proceeds are to be used by
Borrower  solely to enable  the  Borrower  to  refinance  debt  incurred  by the
Guarantor  in  acquiring  the  physical  therapy  practice  now know as Oak Tree
Medical Management, Inc.

Line of Credit - in the principal  amount of  $200,000.00  which is evidenced by
the  Promissory  Note dated  September 30, 1996 ("Line of Credit  Note"),  under
which Borrower may borrow,  repay,  and reborrow,  from time to time, so long as
the total indebtedness outstanding at any one time does not exceed the principal
amount.  The Loan proceeds are to be used by Borrower solely to finance accounts
receivable.  Bank's  obligation to advance or readvance under the Line of Credit
Note shall terminate if Borrower is in Default under the Line of Credit Note.

This  Agreement  applies  to the Loan and all Loan  Documents.  The terms  "Loan
Documents"  and  "Obligations,"  as used in this  Agreement,  are defined in the
Note. The term "Borrower" shall include its Subsidiaries and Affiliates. As used
in this  Agreement as to Borrower,  "Subsidiary"  shall mean any  corporation of
which more than 50% of the issued and outstanding voting stock is owned directly
or indirectly by Borrower. As to Borrower, "Affiliate" shall have the meaning as
defined in 11 U.S.C.  ss. 101,  except that the term  "debtor"  therein shall be
substituted by the term "Borrower" herein.

Relying upon the covenants, agreements, representations and warranties contained
in this  Agreement,  Bank is willing to extend credit to Borrower upon the terms
and subject to the conditions  set forth herein,  and Bank and Borrower agree as
follows:

REPRESENTATIONS.  Borrower  represents  that from the date of this Agreement and
until  final  payment  in full of the  Obligations:  Accurate  Information.  All
information now and hereafter furnished to Bank is and will be true, correct and
complete.  Any such information  relating to Borrower's financial condition will
accurately  reflect  Borrower's  financial  condition as of the date(s) thereof,
(including  all  contingent  liabilities  of every type),  and Borrower  further
represents that its financial  condition has not changed materially or adversely
since the  date(s)  of such  documents.  Authorization;  Non-Contravention.  The
execution,   delivery  and  performance  by  Borrower  and  any  guarantor,   as
applicable,  of this  Agreement and other Loan  Documents to which it is a party
are within its power, have been duly authorized by all necessary action taken by
the duly  authorized  officers of Borrower and any guarantors and, if necessary,
by making appropriate  filings with any 

                                       
<PAGE>

governmental  agency or unit and are the legal,  binding,  valid and enforceable
obligations  of  Borrower  and any  guarantors;  and do not (i)  contravene,  or
constitute  (with or  without  the  giving of notice or lapse of time or both) a
violation of any provision of applicable law, a violation of the  organizational
documents  of  Borrower  or any  guarantor,  or a default  under any  agreement,
judgment,  injunction,  order,  decree  or  other  instrument  binding  upon  or
affecting  Borrower or any guarantor,  (ii) result in the creation or imposition
of any lien  (other than the lien(s)  created by the Loan  Documents)  on any of
Borrower's or guarantor's  assets,  or (iii) give cause for the  acceleration of
any  obligations  of  Borrower or any  guarantor  to any other  creditor.  Asset
Ownership.  Borrower has good and marketable  title to all of the properties and
assets reflected on the balance sheets and financial statements supplied Bank by
Borrower,  and all such  properties  and assets are free and clear of mortgages,
security deeds, pledges,  liens, charges, and all other encumbrances,  except as
otherwise  disclosed  to Bank by Borrower  in writing  ("Permitted  Liens").  To
Borrower's  knowledge,  no default has occurred under any Permitted Liens and no
claims or interests  adverse to Borrower's  present rights in its properties and
assets have arisen.  Discharge of Liens and Taxes. Borrower has duly filed, paid
and/or  discharged  all taxes or other  claims which may become a lien on any of
its  property  or  assets,  except  to the  extent  that  such  items  are being
appropriately  contested  in good faith and an adequate  reserve for the payment
thereof is being maintained.  Sufficiency of Capital. Borrower is not, and after
consummation  of this  Agreement  and after  giving  effect to all  indebtedness
incurred and liens created by Borrower in connection with the Loan, will not be,
insolvent  within the meaning of 11 U.S.C.  ss.  101(32).  Compliance with Laws.
Borrower is in  compliance  in all respects  with all  federal,  state and local
laws, rules and regulations applicable to its properties,  operations, business,
and finances,  including, without limitation, any federal or state laws relating
to liquor  (including 18 U.S.C.  ss. 3617,  et seq.) or narcotics  (including 21
U.S.C. ss. 801, et seq.) and/or any commercial crimes;  all applicable  federal,
state and local laws and regulations  intended to protect the  environment;  and
the Employee  Retirement Income Security Act of 1974, as amended  ("ERISA"),  if
applicable.  Organization  and Authority.  Each  corporate or limited  liability
company  Borrower and any  guarantor,  as applicable,  is duly created,  validly
existing and in good standing  under the laws of the state of its  organization,
and  has  all  powers,  governmental  licenses,  authorizations,   consents  and
approvals  required to operate its business as now conducted.  Each corporate or
limited liability company Borrower and any guarantor, if any, is duly qualified,
licensed  and in good  standing  in each  jurisdiction  where  qualification  or
licensing  is  required  by the  nature of its  business  or the  character  and
location of its property,  business or customers, and in which the failure to so
qualify  or be  licensed,  as the case may be, in the  aggregate,  could  have a
material  adverse  effect  on  the  business,  financial  position,  results  of
operations,  properties  or  prospects  of  Borrower or any such  guarantor.  No
Litigation.  There are no pending or threatened suits, claims or demands against
Borrower or any  guarantor  that have not been  disclosed to Bank by Borrower in
writing.

AFFIRMATIVE COVENANTS.  Borrower agrees that from the date of this Agreement and
until final  payment in full of the  Obligations,  unless  Bank shall  otherwise
consent in writing, Borrower will: Business Continuity.  Conduct its business in
substantially  the same  manner and  locations  as such  business is now and has
previously been conducted. Maintain Properties.  Maintain, preserve and keep its
property  in good  repair,  working  order  and  condition,  making  all  needed
replacements,  additions and improvements thereto, to the extent allowed by this
Agreement.  Access to Books & Records.  Allow Bank, or its agents, during normal
business  hours,  access to the  books,  records  and such  other  documents  of
Borrower as Bank shall reasonably require, and allow Bank to make copies thereof
at Bank's expense. Insurance.  Maintain adequate insurance coverage with respect
to its  properties  and business  against loss or damage of the kinds and in the
amounts  customarily  insured  against by  companies of  established  reputation
engaged  in the  same  or  similar  businesses  including,  without  limitation,
commercial general liability  insurance,  workers  compensation  insurance,  and
business  interruption  insurance;  all  acquired in such  amounts and from such
companies as Bank may reasonably  require.  Notice of Default and Other Notices.
(a) Notice of Default.  Furnish to Bank  immediately  upon becoming aware of the
existence of any  condition or event which  

                                     Page 2
                                       
<PAGE>

constitutes  a Default (as defined in the Loan  Documents)  or any event  which,
upon the  giving  of  notice  or lapse of time or both,  may  become a  Default,
written  notice  specifying  the nature and period of existence  thereof and the
action which  Borrower is taking or proposes to take with respect  thereto.  (b)
Other  Notices.  Promptly  notify  Bank in writing of (i) any  material  adverse
change in its financial  condition or its  business;  (ii) any default under any
material  agreement,  contract or other  instrument to which it is a party or by
which any of its properties are bound,  or any  acceleration  of the maturity of
any indebtedness owing by Borrower;  (iii) any material adverse claim against or
affecting Borrower or any part of its properties;  (iv) the commencement of, and
any  material  determination  in,  any  litigation  with any third  party or any
proceeding before any governmental agency or unit affecting Borrower; and (v) at
least 30 days prior thereto,  any change in Borrower's  name or address as shown
above,  and/or  any  change  in  Borrower's  structure.  Compliance  with  Other
Agreements.  Comply with all terms and conditions  contained in this  Agreement,
and any other Loan Documents, and swap agreements,  if applicable, as defined in
the Note.  Payment of Debts.  Pay and discharge  when due, and before subject to
penalty or further charge, and otherwise satisfy before maturity or delinquency,
all  obligations,  debts,  taxes,  and liabilities of whatever nature or amount,
except those which Borrower in good faith disputes. Reports and Proxies. Deliver
to Bank, promptly,  a copy of all financial  statements,  reports,  notices, and
proxy statements, sent by Borrower to stockholders,  and all regular or periodic
reports  required  to be  filed by  Borrower  with any  governmental  agency  or
authority. Other Financial Information.  Deliver promptly such other information
regarding the operation,  business affairs,  and financial condition of Borrower
which  Bank may  reasonably  request.  Non-Default  Certificate  From  Borrower.
Deliver to Bank, with the Financial  Statements  required  herein, a certificate
signed by Borrower,  if Borrower is an individual,  or by a principal  financial
officer of  Borrower  warranting  that no  "Default"  as  specified  in the Loan
Documents  nor any event  which,  upon the  giving of notice or lapse of time or
both,  would  constitute  such a Default,  has occurred.  Estoppel  Certificate.
Furnish,  within  15 days  after  request  by Bank,  a  written  statement  duly
acknowledged  of the amount due under the Loan and  whether  offsets or defenses
exist  against  the  Obligations.  Deposit  Relationship.  Maintain  its primary
depository  account and cash management  account with Bank. Reports and Proxies.
Borrower  shall  deliver  to  First  Union,  promptly,  a copy of all  financial
statements,  reports,  notices,  and  proxy  statements,  sent  by  Borrower  to
stockholders,  and all  regular  or  periodic  reports  required  to be filed by
Borrower with any governmental agency or authority.

NEGATIVE  COVENANTS.  Borrower  agrees that from the date of this  Agreement and
until final  payment in full of the  Obligations,  unless  Bank shall  otherwise
consent  in  writing,   Borrower  will  not:   Default  on  Other  Contracts  or
Obligations.  Default on any material  contract with or obligation when due to a
third party or default in the  performance  of any  obligation  to a third party
incurred for money borrowed.  Judgment Entered. Permit the entry of any monetary
judgment or the assessment  against,  the filing of any tax lien against, or the
issuance of any writ of  garnishment  or  attachment  against any property of or
debts  due  Borrower  in an  amount  in  excess  of  $25,000.00  and that is not
discharged  or  execution  is not  stayed  within  Thirty  (30)  days of  entry.
Government Intervention.  Permit the assertion or making of any seizure, vesting
or  intervention by or under authority of any government by which the management
of Borrower or any guarantor is displaced of its authority in the conduct of its
respective  business  or such  business is  curtailed  or  materially  impaired.
Prepayment of Other Debt.  Retire any  long-term  debt entered into prior to the
date of this  Agreement at a date in advance of its legal  obligation  to do so.
Retire or  Repurchase  Capital  Stock.  Retire or  otherwise  acquire any of its
capital stock. Change in Fiscal Year. Borrower or guarantor shall not change its
fiscal year  without the consent of Bank.  Guarantees.  Guarantee  or  otherwise
become  responsible  for  obligations  of any  other  person  or  persons  in an
aggregate  amount  in excess of  $10,000.00  per  fiscal  year,  other  than the
endorsement  of checks and  drafts  for  collection  in the  ordinary  course of
business.  Encumbrances.  Create,  assume,  or  permit  to exist  any  mortgage,
security deed, deed of trust,  pledge,  lien, charge or other encumbrance on any
of its assets, whether now owned or hereafter acquired, other than: (i) security
interests required 

                                     Page 3
<PAGE>

by the Loan Documents; (ii) liens for taxes contested in good faith; (iii) liens
accruing by law for employee benefits; or (iv) Permitted Liens.

FINANCIAL COVENANTS.  Borrower, on a consolidated basis, agrees to the following
provisions  from the date of this  Agreement  and until final payment in full of
the Obligations,  unless Bank shall otherwise consent in writing: Current Ratio.
Borrower shall, at all times,  maintain a Current Ratio of not less than 2.00 to
1.00.  "Current Ratio" shall mean the ratio of current assets divided by current
liabilities.  Working  Capital.  Borrower shall, at all times,  maintain Working
Capital of at least  $2,000,000.00.  "Working  Capital" shall mean the excess of
the current assets over the current  liabilities.  Tangible Net Worth.  Borrower
shall,  at all times,  maintain  Tangible  Net Worth of at least  $6,000,000.00.
"Tangible  Net Worth" shall mean the total assets minus total  liabilities.  For
purposes of this  computation,  the aggregate amount of any intangible assets of
Borrower including, without limitation, goodwill, franchises, licenses, patents,
trademarks,  trade names,  copyrights,  service marks, and brand names, shall be
subtracted  from  total  assets,  and  total  liabilities  shall  include  fully
subordinated  debt.  Total  Liabilities  to Tangible Net Worth  Ratio.  Borrower
shall,  at all times,  maintain a ratio of Total  Liabilities,  including  fully
subordinated  debt, divided by Tangible Net Worth of not more than 3.00 to 1.00.
For purposes of this computation, "Total Liabilities" shall mean all liabilities
of Borrower,  including  capitalized  leases and all reserves for deferred taxes
and other deferred sums appearing on the liabilities  side of a balance sheet of
Borrower, in accordance with generally accepted accounting principles applied on
a consistent  basis.  Debt Service  Coverage Ratio.  Borrower shall at all times
maintain  a Debt  Service  Coverage  Ratio of not less than 2.00 to 1.00.  "Debt
Service  Coverage Ratio" shall mean the sum of net profit plus interest  expense
plus income tax expense plus depreciation and amortization divided by the sum of
interest  expense plus the current  portion of long term debt and capital leases
plus income tax expense.  Limitation on Debt.  Borrower and any guarantor  shall
not, without the Bank's prior written consent,  directly or indirectly,  create,
incur,  assume or become liable for any debt,  contingent or direct,  if, giving
effect to such additional debt on a pro forma basis, causes the aggregate amount
of Borrower's  debt,  including  obligations  to Bank, to exceed  $1,300,000.00.
Loans and Advances.  Borrower shall not,  during any fiscal year,  make loans or
advances,  excepting ordinary course of business travel and expense advances, to
any person or entity, which total more than $10,000.00 in the aggregate.

ANNUAL  FINANCIAL  STATEMENTS.  Borrower shall deliver to Bank,  within 120 days
after the close of each fiscal year, audited financial statements reflecting its
operations during such fiscal year,  including,  without  limitation,  a balance
sheet,  profit and loss statement and statement of cash flows,  with  supporting
schedules;  all on a  consolidated  and  consolidating  basis and in  reasonable
detail,  prepared in conformity with generally accepted  accounting  principles,
applied  on a  basis  consistent  with  that of the  preceding  year.  All  such
statements  shall be  examined by an  independent  certified  public  accountant
acceptable to Bank. The opinion of such independent  certified public accountant
shall not be  acceptable to Bank if qualified  due to any  limitations  in scope
imposed by Borrower or its Subsidiaries,  if any. Any other qualification of the
opinion by the  accountant  shall  render  the  acceptability  of the  financial
statements subject to Bank's approval.

PERIODIC  FINANCIAL  STATEMENTS.   Borrower  shall  deliver  to  Bank  unaudited
management-prepared    quarterly   financial   statements   including,   without
limitation,  a balance  sheet,  profit and loss  statement and statement of cash
flows, with supporting  schedules,  as soon as available and in any event within
30 days  after the close of each  such  period;  all in  reasonable  detail  and
prepared in conformity with generally accepted accounting principles, applied on
a basis  consistent with that of the preceding  year.  Such statements  shall be
certified as to their  correctness by a principal  financial officer of Borrower
and in each  case,  if audit  statements  are  required,  subject  to audit  and
year-end adjustments.

                                     Page 4

<PAGE>

FINANCIAL AND OTHER INFORMATION. Borrower shall deliver to Bank such information
as Bank may reasonably request from time to time,  including without limitation,
financial   statements  and  information   pertaining  to  Borrower's  financial
condition. Such information shall be true, complete, and accurate.

TAX RETURNS.  Borrower shall deliver to Bank, within 30 days of filing, complete
copies of federal and state tax returns,  as applicable,  each of which shall be
signed and certified by Borrower to be true and complete copies of such returns.
In the  event an  extension  is  filed,  Borrower  shall  deliver  a copy of the
extension within 30 days of filing.

BORROWING  BASE.  As to the  Line of  Credit  Note in the  principal  amount  of
$200,000.00, the following provisions shall apply:

Borrowing  Limitation.  The maximum  principal  amount that  Borrower may borrow
shall be the lesser of the principal amount stated in the Line of Credit Note or
the maximum principal amount allowed under this addendum (the "Maximum Principal
Amount").

The Maximum  Principal  Amount shall be an amount equal to 75% of the net amount
of Eligible Accounts, less the amount of any Reserve required by Bank.

"Eligible  Account"  refers to an account  receivable not more than 90 days from
the  date  of the  original  invoice  that  arises  in the  ordinary  course  of
Borrower's business and meets the following  eligibility  requirements:  (a) the
sale of goods or services  reflected in such account is final and such goods and
services have been  delivered or provided and accepted by the account debtor and
payment  for such is owing;  (b) the  invoices  comprising  an  account  are not
subject to any claims,  returns or disputes of any kind;  (c) the account debtor
is not insolvent;  (d) the account debtor has its principal place of business in
the United States; (e) the account debtor is not an affiliate of Borrower and is
not a supplier to Borrower and the account is not  otherwise  exposed to risk of
set-off;  (f) not more than twenty five percent of the original  invoices  owing
Borrower  by the  account  debtor are more than ninety days from the date of the
original invoice and do not meet the other eligible requirements; (g) Bank has a
first priority perfected security interest in such account.

"Reserves"  may be  required  at any time and from time to time by Bank  without
prior  notice to  Borrower  in amounts  deemed by Bank to be adequate to reserve
against  outstanding  letter  of  credit,   outstanding   bankers   acceptances,
Borrower's  obligations  to Bank or its  affiliates  or any  guaranties or other
contingent debt of Borrower.

Required Reports. Borrower shall certify to Bank by the tenth day of each month,
the amount of  Eligible  Accounts  as of the first day of each  month,  on forms
required by Bank together with all detail and supporting  documents requested by
Bank. Bank may at any time and from time to time,  during Bank's normal business
hours,  enter  upon any  business  premises  of  Borrower  and audit  Borrower's
accounts.  Bank's  determination of the amount of Eligible Accounts shall at all
times be indisputable  and deemed  correct.  The Borrower,  at all times,  shall
cooperate with Bank without  limitation by providing Bank information and access
to  Borrower's  premises and  business  records and shall be courteous to Bank's
agents.

Continuing  Representations.  Borrower  warrants and  represents as a continuing
warranty,  that so long as  principal  is  outstanding  under the Line of Credit
Note,  the  outstanding  principal  balance  shall not  exceed the lesser of the
Maximum  Principal  Amount or the principal  amount stated in the Line of Credit
Note (the "Borrowing  Limit").  Borrower agrees to pay any advances in excess of
the Borrowing Limit  immediately upon receipt by Borrower of written notice that
the Borrowing Limit has been exceeded.

                                     Page 5

<PAGE>

CONDITIONS PRECEDENT.  The obligations of Bank to make the Loan and any advances
pursuant to this  Agreement are subject to the following  conditions  precedent:
Additional Documents. Receipt by Bank of such additional supporting documents as
Bank or its counsel may reasonably request.

IN WITNESS WHEREOF,  Borrower and Bank, on the day and year first written above,
have caused this Agreement to be executed under seal.

                                  Oak Tree Medical Management, Inc.
                                  Taxpayer Identification Number: 13-3906760


CORPORATE                         By:_________________________________________
SEAL                                 William Kedersha, President

                                  By:_________________________________________
                                     Michael Gerber, Executive Vice President



First Union National Bank



_________________________________________





                                     Page 6


                               SECURITY AGREEMENT
                                                              September 30, 1996
Oak Tree Medical Management, Inc.
2 Gannett Drive, Suite 215
White Plains, New York 10601
(Individually and collectively "Debtor")

First Union National Bank
50 Main Street
White Plains, New York 10606
(Hereinafter referred to as the "Bank")

For value received and to secure payment and  performance of the Promissory Note
executed by the Debtor dated  September  30,  1996,  in the original  principal
amount  of  $400,000.00,   payable  to  Bank,  and  any  extensions,   renewals,
modifications  or  novations  thereof and the  Promissory  Note  executed by the
Debtor  dated  September  30,  1996,  in  the  original   principal  amount  of
$200,000.00,  payable to Bank, and any extensions,  renewals,  modifications  or
novations thereof (together,  the "Note"), this Security Agreement and the other
Loan  Documents,  and any other  obligations of Debtor to Bank however  created,
arising or evidenced,  whether direct or indirect,  absolute or contingent,  now
existing or hereafter arising or acquired, including swap agreements (as defined
in 11 U.S.C. ss. 101),  future advances,  and all costs and expenses incurred by
Bank to obtain,  preserve,  perfect and enforce the  security  interest  granted
herein  and to  maintain,  preserve  and  collect  the  property  subject to the
security interest (collectively,  "Obligations"), Debtor hereby grants to Bank a
continuing  security interest in and lien upon the following described property,
now owned or hereafter  acquired,  any additions,  accessions,  or substitutions
thereof and thereto,  and all proceeds and products  thereof,  including cash or
non-cash dividends (collectively, "Collateral"):

All accounts, contract rights, leases, and any other rights of Debtor to payment
for goods  sold or  leased or for  services  rendered;  furniture;  furnishings;
equipment; machinery;  accessories; moveable trade fixtures; goods held for sale
or being processed for sale in Debtor's  business,  including all raw materials,
supplies,  and other materials used or consumed in Debtor's  business,  goods in
process,   finished  goods,  and  all  other  items  customarily  classified  as
inventory;   building  improvement  and  construction  materials,  supplies  and
equipment; chattel paper; instruments; documents; all funds on deposit with Bank
and  its  affiliates;  and  all  general  intangibles;  as  well  as all  parts,
replacements, substitutions, profits, products and cash and non-cash proceeds of
the foregoing (including  insurance and condemnation  proceeds payable by reason
of condemnation of or loss or damage thereto) in any form and wherever located.

Debtor hereby represents and agrees that:

OWNERSHIP. Debtor owns the Collateral or Debtor will purchase and acquire rights
in the Collateral  within ten days of the date advances are made under the Note.
If Collateral is being  acquired with the proceeds of an advance under the Note,
Debtor  authorizes  Bank to  disburse  proceeds  directly  to the  seller of the
Collateral.  The Collateral is free and clear of all liens,  security interests,
and claims except those previously  reported in writing to Bank, and Debtor will
keep the  Collateral  free and clear  from all  liens,  security  interests  and
claims, other than those granted to Bank.

NAME AND  OFFICES.  There has been no change in the name of Debtor,  or the name
under which Debtor conducts  business,  within the 5 years preceding the date of
execution  of this  Security  Agreement  and Debtor has not moved its  executive
offices or residence  within the 5 years preceding the date of execution of this
Security  Agreement  except as  previously  reported  in  writing  to Bank.  The
taxpayer identification number of Debtor as provided herein is correct.


                                     Page 1

<PAGE>



TITLE/TAXES. Debtor has good and marketable title to Collateral and will warrant
and defend same against all claims.  Debtor will not  transfer,  sell,  or lease
Collateral  (except in the ordinary  course of  business).  Debtor agrees to pay
promptly all taxes and assessments upon or for the use of Collateral and on this
Security Agreement.  At its option,  Bank may discharge taxes,  liens,  security
interests  or other  encumbrances  at any time  levied or placed on  Collateral.
Debtor agrees to reimburse  Bank, on demand,  for any such payment made by Bank.
Any amounts so paid shall be added to the Obligations.

WAIVERS. Debtor waives presentment,  demand, protest, notice of dishonor, notice
of default, demand for payment, notice of intention to accelerate, and notice of
acceleration of maturity.  Debtor further agrees not to assert against Bank as a
defense (legal or equitable), as a set-off, as a counterclaim, or otherwise, any
claims  Debtor may have  against  any seller or lessor  that  provided  personal
property or services  relating to any part of the Collateral.  Debtor waives all
exemptions and homestead rights with regard to the Collateral. Debtor waives any
and all  rights  to  notice  or to  hearing  prior to  Bank's  taking  immediate
possession or control of any Collateral, and to any bond or security which might
be required by  applicable  law prior to the exercise of any of Bank's  remedies
against any Collateral.

EXTENSIONS, RELEASES. Debtor agrees that Bank may extend, renew or modify any of
the Obligations and grant any releases,  compromises or indulgences with respect
to any security for the Obligations, or with respect to any party liable for the
Obligations,  all without  notice to or consent of Debtor and without  affecting
the liability of Debtor or the enforceability of this Security Agreement.

NOTIFICATIONS  OF CHANGE.  Debtor  will  notify Bank in writing at least 30 days
prior to any change in: (i) Debtor's chief place of business  and/or  residence;
(ii) Debtor's name or identity;  or (iii) Debtor's corporate  structure.  Debtor
will keep Collateral at the location(s)  previously  provided to Bank until such
time as Bank provides  written advance  consent to a change of location.  Debtor
will bear the cost of preparing  and filing any  documents  necessary to protect
Bank's liens.

COLLATERAL  CONDITION AND LAWFUL USE.  Debtor  represents  that Collateral is in
good repair and condition and that Debtor shall use  reasonable  care to prevent
Collateral from being damaged or depreciating.  Debtor shall immediately  notify
Bank of any material loss or damage to  Collateral.  Debtor shall not permit any
item of  equipment  to become a fixture to real estate or an  accession to other
personal  property.  Debtor  represents it is in compliance in all respects with
all  federal,  state and local laws,  rules and  regulations  applicable  to its
properties,  Collateral,  operations, business, and finances, including, without
limitation,  any federal or state laws  relating to liquor  (including 18 U.S.C.
ss. 3617, et seq.) or narcotics  (including 21 U.S.C.  ss. 801, et seq.) and all
applicable  federal,  state and local laws, and regulations  intended to protect
the environment.

RISK OF LOSS AND  INSURANCE.  Debtor shall bear all risk of loss with respect to
the  Collateral.  The injury to or loss of Collateral,  either partial or total,
shall not release Debtor from payment or other performance hereof. Debtor agrees
to obtain and keep in force casualty and hazard  insurance on Collateral  naming
Bank as loss payee. Such insurance is to be in form and amounts  satisfactory to
Bank.  All such  policies  shall  provide to Bank a minimum  of 30 days  written
notice of  cancellation.  Debtor shall furnish to Bank such  policies,  or other
evidence of such policies  satisfactory  to Bank.  Bank is  authorized,  but not
obligated,  to purchase  any or all  insurance  or "Single  Interest  Insurance"
protecting  such interest as Bank deems  appropriate  against such risks and for
such coverage and for such amounts, including either the loan amount or value of
the Collateral at its discretion, all at Debtor's expense. In such event, Debtor
agrees to reimburse  Bank for the cost of such  insurance  and Bank may add such
cost to the Obligations. Debtor shall bear the risk of loss to the extent of any
deficiency in the effective insurance coverage with respect to loss or damage to
any of the  Collateral.  Debtor hereby  assigns to Bank the proceeds of all such

                                     Page 2

<PAGE>

insurance  and  directs any insurer to make  payments  directly to Bank.  Debtor
hereby  appoints  Bank  its   attorney-in-fact,   which   appointment  shall  be
irrevocable  and coupled  with an interest  for so long as the  Obligations  are
unpaid,  to file proof of loss and/or any other forms  required to collect  from
any  insurer any amount due from any damage or  destruction  of  Collateral,  to
agree to and  bind  Debtor  as to the  amount  of said  recovery,  to  designate
payee(s) of such recovery,  to grant releases to insurer,  to grant  subrogation
rights to any  insurer,  and to endorse any  settlement  check or draft.  Debtor
agrees not to exercise any of the foregoing  powers  granted to Bank without the
Bank's prior written consent.

ADDITIONAL COLLATERAL. If at any time Collateral is unsatisfactory to Bank, then
on demand of Bank, Debtor shall immediately  furnish such additional  Collateral
satisfactory to Bank to be held by Bank as if originally  pledged  hereunder and
shall execute such additional  security  agreements and financing  statements as
requested by Bank.

FINANCING  STATEMENTS.  No Financing  Statement (other than any filed by Bank or
disclosed  above)  covering any of Collateral or proceeds  thereof is on file in
any public filing office.  This Security  Agreement,  or a copy thereof,  or any
Financing  Statement  executed  hereunder  may be recorded.  On request of Bank,
Debtor will execute one or more  Financing  Statements in form  satisfactory  to
Bank and will pay all costs and  expenses  of filing the same or of filing  this
Security Agreement in all public filing offices,  where filing is deemed by Bank
to be desirable.  Bank is authorized to file  Financing  Statements  relating to
Collateral  without Debtor's  signature where authorized by law. Debtor appoints
Bank as its  attorney-in-fact  to execute such documents necessary to accomplish
perfection  of Bank's  security  interest.  The  appointment  is coupled with an
interest and shall be irrevocable as long as any Obligations remain outstanding.
Debtor  further  agrees to take such other actions as might be requested for the
perfection,  continuation  and assignment,  in whole or in part, of the security
interests granted herein. If certificates are issued or outstanding as to any of
the Collateral,  Debtor will cause the security interests of Bank to be properly
protected, including perfection of notation thereon.

LANDLORD/MORTGAGEE  WAIVERS.  Debtor shall cause each mortgagee of real property
owned by Debtor and each landlord of real  property  leased by Debtor to execute
and deliver instruments satisfactory in form and substance to Bank by which such
mortgagee or landlord waives its rights, if any, in the Collateral.

STOCK,  DIVIDENDS.  If, with respect to any security pledged hereunder,  a stock
dividend is declared,  any stock split made or right to subscribe is issued, all
the certificates for the shares representing such stock dividend, stock split or
right to subscribe will be immediately delivered,  duly endorsed, to the Bank as
additional  collateral,  and any cash or non-cash  dividend will be  immediately
delivered to Bank.

CONTRACTS,  CHATTEL PAPER, ACCOUNTS,  GENERAL INTANGIBLES.  Debtor warrants that
the  Collateral  consisting of contract  rights,  chattel  paper,  accounts,  or
general  intangibles is (i) genuine and enforceable in accordance with its terms
except as limited by law;  (ii) not subject to any  defense,  set-off,  claim or
counterclaim  of a material  nature against Debtor except as to which Debtor has
notified Bank in writing;  and (iii) not subject to any other circumstances that
would impair the validity, enforceability or amount of such Collateral except as
to which Debtor has notified Bank in writing.  Debtor shall not amend, modify or
supplement any lease, contract or agreement contained in the Collateral or waive
any provision therein, without prior written consent of Bank.

ACCOUNT  INFORMATION.  From time to time,  at the Bank's  request,  Debtor shall
provide Bank with schedules  describing  all accounts and  contracts,  including
customers'  addresses,  credited or acquired by Debtor and at the Bank's request
shall execute and deliver  written  assignments of 

                                     Page 3

<PAGE>

contracts and other  documents  evidencing  such accounts and contracts to Bank.
Together with each schedule,  Debtor shall,  if requested by Bank,  furnish Bank
with copies of Debtor's sales journals,  invoices,  customer  purchase orders or
the equivalent,  and original  shipping or delivery receipts for all goods sold,
and Debtor warrants the genuineness thereof.

ACCOUNT AND  CONTRACT  DEBTORS.  Bank shall have the right to notify the account
and contract  debtors  obligated on any or all of the Collateral to make payment
thereof  directly to Bank and Bank may take  control of all proceeds of any such
Collateral,  which  rights  Bank  may  exercise  at any  time.  The cost of such
collection and  enforcement,  including  attorneys' fees and expenses,  shall be
borne  solely by Debtor  whether the same is  incurred  by Bank or Debtor.  Upon
demand of Bank, Debtor will, upon receipt of all checks,  drafts, cash and other
remittances in payment on Collateral, deposit the same in a special bank account
maintained with Bank, over which Bank also has the power of withdrawal.

If a Default  occurs,  no discount,  credit,  or  allowance  shall be granted by
Debtor to any account or contract  debtor and no return of merchandise  shall be
accepted by Debtor without Bank's  consent.  Bank may, after Default,  settle or
adjust  disputes and claims directly with account  contract  debtors for amounts
and upon terms  that Bank  considers  advisable,  and in such  cases,  Bank will
credit the Obligations  with the net amounts  received by Bank,  after deducting
all of the expenses incurred by Bank. Debtor agrees to indemnify and defend Bank
and hold it harmless with respect to any claim or proceeding  arising out of any
matter related to collection of the Collateral.

GOVERNMENT  CONTRACTS.  If any  accounts  receivable  or proceeds  of  inventory
covered hereby arises from obligations due to Debtor from any governmental  unit
or organization, Debtor shall immediately notify Bank in writing and execute all
documents and take all actions  demanded by Bank to ensure  recognition  by such
governmental unit or organization of the rights of Bank in the Collateral.

FARM PRODUCTS.  Debtor agrees to deliver to Bank a written list  identifying all
points  of  delivery  of,  and  identifying  all  potential  buyers,  commission
merchants,  and selling  agents to or through whom Debtor may sell farm products
secured by this Security Agreement.

LIVESTOCK.  If the  Collateral  includes  livestock,  Debtor  grants  to  Bank a
security interest in all increase,  progeny and products thereof, all feed owned
by Debtor, all water privileges, all equipment used in feeding and handling said
livestock, and all rights, title and interest in and to all contracts and leases
covering lands for pasture and grazing purposes.

INVENTORY.  So long as no Default has  occurred,  Debtor shall have the right in
the regular course of business,  to process and sell Debtor's inventory,  unless
Bank shall hereafter  otherwise direct in writing.  Upon demand of Bank,  Debtor
will, upon receipt of all checks, drafts, cash and other remittances, in payment
of Collateral sold,  deposit the same in a special bank account  maintained with
Bank, over which Bank also has the power of withdrawal. Debtor shall comply with
all federal, state, and local laws, regulations,  rulings, and orders applicable
to Debtor or its assets or  business,  in all  respects.  Without  limiting  the
generality of the previous  sentence,  Debtor shall comply with all requirements
of the federal Fair Labor  Standards  Act in the conduct of its business and the
production of inventory.  Debtor shall notify Bank  immediately of any violation
by Debtor of the Fair Labor  Standards Act, and a failure of Debtor to so notify
Bank shall  constitute  a  continuing  representation  that all  inventory  then
existing has been produced in compliance with the Fair Labor Standards Act.

INSTRUMENTS,  CHATTEL PAPER.  Any Collateral that is instruments,  chattel paper
and negotiable  documents will be properly  assigned to, deposited with and held
by Bank,  unless Bank shall  hereafter  otherwise  direct or consent in writing.
Bank may, without notice, before or after maturity 

                                     Page 4

<PAGE>

of the  Obligations,  exercise any or all rights of collection,  conversion,  or
exchange and other  similar  rights,  privileges  and options  pertaining to the
Collateral, but shall have no duty to do so.

COLLATERAL DUTIES. Bank shall have no custodial or ministerial duties to perform
with respect to Collateral  pledged  except as set forth  herein;  and by way or
explanation and not by way of limitation,  Bank shall incur no liability for any
of the following:  (i) loss or depreciation of the Collateral  (unless caused by
its  willful  misconduct),  (ii) its failure to present any paper for payment or
protest,  to protest or give  notice of  nonpayment,  or any other  notice  with
respect to any paper or Collateral, or (iii) its failure to present or surrender
for redemption,  conversion or exchange any bond, stock, paper or other security
whether in  connection  with any  merger,  consolidation,  recapitalization,  or
reorganization,  arising out of the refunding of the original  security,  or for
any other reason,  or its failure to notify any party hereto that the Collateral
should be so presented or surrendered.

TRANSFER OF COLLATERAL.  The Bank may assign its rights in the Collateral or any
part thereof,  to the assignee,  as well as any subsequent  holder  hereof,  who
shall thereupon become vested with all the powers and rights herein given to the
Bank with respect to the property so  transferred  and  delivered,  and the Bank
shall  thereafter be forever  relieved and fully  discharged  from any liability
with respect to such property so  transferred,  but with respect to any property
not so transferred the Bank shall retain all rights and powers hereby given.

SUBSTITUTE COLLATERAL.  With prior written consent of Bank, other Collateral may
be  substituted  for the original  Collateral  herein in which event all rights,
duties,  obligations,  remedies and security  interests provided for, created or
granted shall apply fully to such substitute Collateral.

INSPECTION,  BOOKS AND  RECORDS.  Debtor  will at all times  keep  accurate  and
complete  records  covering  each item of  Collateral,  including  the  proceeds
therefrom.  Bank, or any of its agents, shall have the right, at intervals to be
determined  by Bank and  without  hindrance  or delay,  to inspect,  audit,  and
examine the Collateral and to make extracts from the books,  records,  journals,
orders,  receipts,  correspondence  and other data  relating to the  Collateral,
Debtor's  business or any other transaction  between the parties hereto.  Debtor
will at its expense furnish Bank copies thereof upon request.

CROSS COLLATERALIZATION  LIMITATION. As to any other existing or future consumer
purpose  loan by Bank to Debtor,  within the  meaning  of the  Federal  Consumer
Credit  Protection  Act, Bank  expressly  waives any security  interest  granted
herein in  Collateral  that Debtor uses as a principal  dwelling  and  household
goods.

ATTORNEYS'  FEES AND OTHER COSTS OF  COLLECTION.  Debtor shall pay all of Bank's
reasonable  expenses  incurred in enforcing this Agreement and in preserving and
liquidating   the   Collateral,   including  but  not  limited  to,   reasonable
arbitration,  paralegals',  attorneys'  and experts' fees and expenses,  whether
incurred  without the  commencement  of a suit,  in any trial,  arbitration,  or
administrative proceeding, or in any appellate or bankruptcy proceeding.

DEFAULT.  If any of the  following  occurs,  a default  ("Default")  under  this
Security Agreement shall exist: (i) The failure of timely payment or performance
of any of the Obligations or a default under any Loan Document;  (ii) Any breach
of any  representation  or agreement  contained or referred to in this  Security
Agreement or other Loan Document;  (iii) Any loss, theft, substantial damage, or
destruction  of the  Collateral  not fully covered by insurance,  or as to which
insurance proceeds are not remitted to Bank within 30 days of the loss; any sale
(except the sale of inventory in the ordinary  course of  business),  lease,  or
encumbrance of any of the Collateral  without prior written  consent of Bank; or
the making of any levy,  seizure, or attachment on or of the Collateral which is
not removed with 10 days;  or (iv) the death of,  appointment  of guardian  for,
dissolution  of,  

                                     Page 5

<PAGE>

termination of existence of, loss of good standing  status by,  appointment of a
receiver for, assignment for the benefit of creditors of, or commencement of any
bankruptcy or insolvency  proceeding by or against Debtor,  its  Subsidiaries or
Affiliates,  if any, or any general  partner of or the holder(s) of the majority
ownership interests of Debtor or any party to the Loan Documents.

REMEDIES ON DEFAULT  (INCLUDING POWER OF SALE). If a Default occurs,  all of the
Obligations shall be immediately due and payable,  without notice and Bank shall
have all the rights and remedies of a secured party under the Uniform Commercial
Code.  Without  limitation  thereto,  Bank shall have the  following  rights and
remedies: (i) To take immediate possession of the Collateral,  without notice or
resort to legal  process,  and for such  purpose,  to enter upon any premises on
which the  Collateral or any part thereof may be situated and to remove the same
therefrom,  or, at its option,  to render the Collateral  unusable or dispose of
said  Collateral on Debtor's  premises.  (ii) To require  Debtor to assemble the
Collateral  and make it available to Bank at a place to be  designated  by Bank.
(iii) To  exercise  its right of set-off or bank lien as to any monies of Debtor
deposited in demand,  checking,  time, savings,  certificate of deposit or other
accounts of any nature  maintained  by Debtor with Bank or  Affiliates  of Bank,
without  advance  notice,  regardless  of whether  such  accounts are general or
special. (iv) To dispose of Collateral,  as a unit or in parcels,  separately or
with any real property interests also securing the Obligations, in any county or
place to be selected by Bank, at either  private or public sale (at which public
sale bank may be the purchaser) with or without having the Collateral physically
present at said sale.  (v) Any notice of sale,  disposition  or other  action by
Bank required by law and sent to Debtor at Debtor's  address shown above,  or at
such other address of Debtor as may from time to time be shown on the records of
Bank, at least 5 days prior to such action,  shall constitute  reasonable notice
to Debtor.  Notice shall be deemed given or sent when mailed postage  prepaid to
Debtor's  address as provided  herein.  (vi) Bank shall be entitled to apply the
proceeds of any sale or other  disposition of the  Collateral,  and the payments
received by Bank with respect to any of the  Collateral,  to the  Obligations in
such order and manner as Bank may determine. (vii) Collateral that is subject to
rapid  declines in value and is  customarily  sold in recognized  markets may be
disposed of by Bank in a recognized market for such collateral without providing
notice of sale.

REMEDIES  ARE  CUMULATIVE.  No failure on the part of Bank to  exercise,  and no
delay in exercising,  any right,  power or remedy  hereunder  shall operate as a
waiver thereof,  nor shall any single or partial  exercise by Bank or any right,
power or remedy hereunder  preclude any other or further exercise thereof or the
exercise  of any right,  power or  remedy.  The  remedies  herein  provided  are
cumulative and are not exclusive of any remedies  provided by law, in equity, or
in other Loan Documents.

MISCELLANEOUS.   (i)   Amendments  and  Waivers.   No  waivers,   amendments  or
modifications of any provision of this Security  Agreement shall be valid unless
in writing  and signed by an officer of Bank.  No waiver by Bank of any  Default
shall  operate  as a waiver of any other  Default  or of the same  Default  on a
future  occasion.  Neither the failure of, nor any delay by, Bank in  exercising
any right,  power or privilege granted pursuant to this Security Agreement shall
operate  as a waiver  thereof,  nor shall a single or partial  exercise  thereof
preclude any other or further  exercise of any other right,  power or privilege.
(ii) Assignment. All rights of Bank hereunder are freely assignable, in whole or
in part,  and shall  inure to the  benefit of and be  enforceable  by Bank,  its
successors,  assigns  and  affiliates.  Debtor  shall not  assign its rights and
interest hereunder without the prior written consent of Bank, and any attempt by
Debtor to assign  without  Bank's prior  written  consent is null and void.  Any
assignment  shall  not  release  Debtor  from  the  Obligations.  This  Security
Agreement shall be binding upon Debtor, and the heirs, personal representatives,
successors,  and  assigns of Debtor.  (iii)  Applicable  Law;  Conflict  Between
Documents.  This Security Agreement shall be governed by and construed under the
law of the state in which the office of Bank as stated above is located  without
regard  to that  state's  conflict  of laws  principles.  If any  terms  of this
Security  Agreement  conflict  with the terms of any  commitment  letter or loan
proposal, the terms of 

                                     Page 6

<PAGE>

this Security  Agreement shall control.  (iv)  Jurisdiction.  Debtor irrevocably
agrees to non-exclusive  personal  jurisdiction in the state in which the office
of Bank as stated above is located.  (v) Severability.  If any provision of this
Security  Agreement shall be prohibited by or invalid under applicable law, such
provision  shall be  ineffective  but only to the extent of such  prohibition or
invalidity,  without  invalidating  the  remainder  of  such  provision  or  the
remaining  provisions of this Security Agreement.  (vi) Notices.  Any notices to
Debtor shall be sufficiently given, if in writing and mailed or delivered to the
address of Debtor shown above or such other address as provided  hereunder;  and
to Bank,  if in writing and mailed or delivered to Bank's  office  address shown
above or such other address as Bank may specify in writing from time to time. In
the event that the Debtor changes Debtor's address at any time prior to the date
this Note is paid in full, Debtor agrees to promptly give written notice of said
change of address by registered or certified mail, return receipt requested, all
charges prepaid.  (vii) Captions. The captions contained herein are inserted for
convenience  only and shall not affect the  meaning  or  interpretation  of this
Security  Agreement or any  provision  hereof.  The use of the plural shall also
mean the  singular,  and vice  versa.  (viii)  Loan  Documents.  The term  "Loan
Documents"  refers to all documents  executed in connection with the Obligations
and may  include,  without  limitation,  commitment  letters,  loan  agreements,
guaranty agreements, other security agreements,  letters of credit, instruments,
financing statements,  mortgages,  deeds of trust, deeds to secure debt, and any
amendments or supplements (excluding swap agreements as defined in 11 U.S.C. ss.
101). (ix) Joint and Several Liability.  If more than one person has signed this
Security Agreement,  such parties are jointly and severally obligated hereunder.
(x)  Binding  Contract.  Debtor  by  execution  and Bank by  acceptance  of this
Security  Agreement,  agree that each party is bound by all terms and provisions
of this Security Agreement.

IN WITNESS WHEREOF,  Debtor, on the day and year first written above, has caused
this Agreement to be executed under seal.

                           Oak Tree Medical Management, Inc.
                           Taxpayer Identification Number: 13-3906760


CORPORATE                  By:______________________________________________
SEAL                           William Kedersha, President

                           By:______________________________________________
                               Michael Gerber, Executive Vice President



3204

                                     Page 7



                                 PROMISSORY NOTE


$400,000.00                                                   September 30, 1996

Oak Tree Medical Management, Inc.
2 Gannett Drive, Suite 215
White Plains, New York 10601
(Individually and collectively "Borrower")

First Union National Bank
50 Main Street
White Plains, New York 10606
(Hereinafter referred to as the "Bank")

Borrower  promises  to pay to the order of Bank,  in lawful  money of the United
States of  America,  at its office  indicated  above or  wherever  else Bank may
specify,  the sum of Four Hundred  Thousand and No/100 Dollars  ($400,000.00) or
such sum as may be  advanced  from  time to time  with  interest  on the  unpaid
principal  balance at the rate and on the terms provided in this Promissory Note
(including all renewals, extensions or modifications hereof, this "Note").

SECURITY.  Borrower  has  granted  Bank a security  interest  in the  collateral
described  in the  Loan  Documents,  including,  but not  limited  to,  personal
property  collateral  described in that certain Security  Agreement of even date
herewith.

INTEREST  RATE.  Interest shall accrue on the unpaid  principal  balance of this
Note from the date hereof at the rate of Bank's  Prime Rate plus 1.0% (100 basis
points) as that rate may change  from time to time with  changes to occur on the
date Bank's Prime Rate  changes  ("Interest  Rate").  Bank's Prime Rate shall be
that rate  announced  by Bank from time to time as its Prime  Rate and is one of
several  interest  rate bases  used by Bank.  Bank lends at rates both above and
below Bank's Prime Rate, and Borrower acknowledges that Bank's Prime Rate is not
represented  or  intended  to be the lowest or most  favorable  rate of interest
offered by Bank.

DEFAULT  RATE.  In addition to all other  rights  contained  in this Note,  if a
Default  (defined  herein)  occurs  and as  long  as a  Default  continues,  all
outstanding  Obligations  shall  bear  interest  at the  Interest  Rate  plus 3%
("Default Rate").  The Default Rate shall also apply from acceleration until the
Obligations or any judgment thereon is paid in full.

INTEREST COMPUTATION. (Actual/360). Interest shall be computed on the basis of a
360-day year for the actual number of days in the interest  period  ("Actual/360
Computation").  The  Actual/360  Computation  determines  the  annual  effective
interest yield by taking the stated (nominal)  interest rate for a year's period
and then dividing  said rate by 360 to determine  the daily  periodic rate to be
applied  for each day in the  interest  period.  Application  of the  Actual/360
Computation produces an annualized effective interest rate exceeding that of the
nominal rate.

REPAYMENT  TERMS.  This Note  shall be due and  payable in  consecutive  monthly
payments of principal of $22,222.22,  together with accrued interest, commencing
on October 30, 1996,  and on the same day of each month  thereafter  until fully
paid. In any event,  all principal and accrued interest shall be due and payable
on March 31, 1998.

APPLICATION OF PAYMENTS. Monies received by Bank from any source for application
toward payment of the Obligations  shall be applied to accrued interest and then
to principal. If a Default

<PAGE>


occurs,  monies may be applied to the  Obligations in any manner or order deemed
appropriate by Bank.

If any  payment  received  by Bank under this Note or other  Loan  Documents  is
rescinded,  avoided or for any reason  returned  by Bank  because of any adverse
claim or threatened  action,  the returned  payment  shall remain  payable as an
obligation  of all persons  liable  under this Note or other Loan  Documents  as
though such payment had not been made.

LOAN DOCUMENTS AND OBLIGATIONS.  The term "Loan Documents" used in this Note and
other Loan  Documents  refers to all documents  executed in connection  with the
loan evidenced by this Note and may include,  without  limitation,  a commitment
letter that survives closing, a loan agreement,  this Note, guaranty agreements,
security  agreements,  security  instruments,   financing  statements,  mortgage
instruments,  letters of credit and any renewals or modifications,  but however,
does not  include  swap  agreements  as  defined in 11 U.S.C.  ss. 101  whenever
executed.

The term  "Obligations" used in this Note refers to any and all indebtedness and
other  obligations  under this  Note,  all other  obligations  as defined in the
respective  Loan  Documents,  and all  obligations  under any swap agreements as
defined in 11 U.S.C. ss. 101 between Borrower and Bank whenever executed.

LATE CHARGE.  If any payments  are not timely made,  Borrower  shall also pay to
Bank a late charge equal to 5% of each payment past due for 10 or more days.

Acceptance by Bank of any late payment without an accompanying late charge shall
not be deemed a waiver of Bank's right to collect such late charge or to collect
a late charge for any subsequent late payment received.

If this Note is secured by  owner-occupied  residential  real  property  located
outside the state in which the office of Bank first shown above is located,  the
late charge laws of the state where the real  property is located shall apply to
this Note, or if permitted  under the law of that state, 5% of each payment past
due for 10 or more days.

ATTORNEYS'  FEES AND OTHER  COLLECTION  COSTS.  Borrower shall pay all of Bank's
reasonable  expenses  incurred  to enforce or  collect  any of the  Obligations,
including, without limitation, reasonable arbitration,  paralegals',  attorneys'
and experts' fees and expenses,  whether  incurred without the commencement of a
suit,  in  any  trial,  arbitration,  or  administrative  proceeding,  or in any
appellate or bankruptcy proceeding.

USURY.  Regardless of any other  provision of this Note or other Loan Documents,
if for any reason the  effective  interest  should  exceed  the  maximum  lawful
interest,  the effective interest shall be deemed reduced to, and shall be, such
maximum lawful  interest,  and (i) the amount which would be excessive  interest
shall be deemed  applied to the reduction of the principal  balance of this Note
and not to the payment of interest,  and (ii) if the loan evidenced by this Note
has been or is thereby  paid in full,  the excess shall be returned to the party
paying  same,  such  application  to the  principal  balance of this Note or the
refunding of excess to be a complete settlement and acquittance thereof.

BORROWER'S  ACCOUNTS.  Except  as  prohibited  by law,  Borrower  grants  Bank a
security  interest  in all of  Borrower's  accounts  with  Bank  and  any of its
affiliates.

DEFAULT.  If any of the following occurs, a default  ("Default") under this Note
shall  exist:  Nonpayment;  Nonperformance.  The  failure  of timely  payment or
performance  of the  Obligations  under this Note or any other  Loan  Documents.
False Warranty. A warranty or representation made

                                     Page 2

<PAGE>

in the Loan Documents or furnished Bank in connection with the loan evidenced by
this  Note  proves  materially  false,  or if of a  continuing  nature,  becomes
materially  false.  Cross Default.  At Bank's option,  any default in payment or
performance of any obligation under any other loans,  contracts or agreements of
Borrower, any Subsidiary or Affiliate of Borrower, any general partner of or the
holder(s)  of the  majority  ownership  interests  of Borrower  with Bank or its
affiliates  ("Affiliate" shall have the meaning as defined in 11 U.S.C. ss. 101,
except  that  the  term  "debtor"  therein  shall  be  substituted  by the  term
"Borrower"  herein;  "Subsidiary"  shall mean any corporation of which more than
50% of the issued and  outstanding  voting stock is owned directly or indirectly
by Borrower). Cessation;  Bankruptcy. The death of, appointment of guardian for,
dissolution  of,  termination of existence of, loss of good standing  status by,
appointment  of a receiver for,  assignment  for the benefit of creditors of, or
commencement  of any  bankruptcy  or  insolvency  proceeding  by or against  the
Borrower,  its Subsidiaries or Affiliates,  if any, or any general partner of or
the holder(s) of the majority ownership  interests of Borrower,  or any party to
the Loan Documents.  Material Capital Structure or Business Alteration.  Without
prior written consent of Bank, (i) a material  alteration in the kind or type of
Borrower's business or that of its Subsidiaries or Affiliates,  if any; (ii) the
acquisition  of  substantially  all  of  Borrower's,   any   Subsidiary's,   any
Affiliate's,  or guarantor's  business or assets,  or a material portion (10% or
more) of such  business  or assets  if such a sale is  outside  Borrower's,  any
Subsidiary's,  any Affiliate's or any guarantor's,  ordinary course of business,
or  more  than  50% of  its  outstanding  stock  or  voting  power  in a  single
transaction or a series of transactions;  (iii) the acquisition of substantially
all of the  business  or  assets or more  than 50% of the  outstanding  stock or
voting  power of any other  entity;  or (iv)  should any  Borrower,  Subsidiary,
Affiliate, or guarantor enter into any merger or consolidation.

REMEDIES  UPON  DEFAULT.  If a  Default  occurs  under  this  Note  or any  Loan
Documents,  Bank may at any time thereafter,  take the following  actions:  Bank
Lien and Set-off.  Exercise  its right of set-off or to  foreclose  its security
interest or lien against any account of any nature or maturity of Borrower  with
Bank without notice.  Acceleration Upon Default. Accelerate the maturity of this
Note and all other Obligations,  and all of the Obligations shall be immediately
due and payable. Cumulative.  Exercise any rights and remedies as provided under
the Note and other Loan Documents, or as provided by law or equity.

FINANCIAL AND OTHER INFORMATION. Borrower shall deliver to Bank such information
as Bank may reasonably request from time to time,  including without limitation,
financial   statements  and  information   pertaining  to  Borrower's  financial
condition. Such information shall be true, complete, and accurate.

WAIVERS AND AMENDMENTS. No waivers, amendments or modifications of this Note and
other Loan  Documents  shall be valid unless in writing and signed by an officer
of Bank. No waiver by Bank of any Default shall operate as a waiver of any other
Default or the same  Default on a future  occasion.  Neither the failure nor any
delay on the part of Bank in exercising any right,  power,  or remedy under this
Note and other Loan  Documents  shall operate as a waiver  thereof,  nor shall a
single or  partial  exercise  thereof  preclude  any other or  further  exercise
thereof or the exercise of any other right, power or remedy.

Each Borrower or any person liable under this Note waives presentment,  protest,
notice of  dishonor,  demand for  payment,  notice of  intention  to  accelerate
maturity,  notice  of  acceleration  of  maturity,  notice of sale and all other
notices of any kind. Further,  each agrees that Bank may extend, modify or renew
this Note or make a novation of the loan  evidenced  by this Note for any period
and  grant  any  releases,  compromises  or  indulgences  with  respect  to  any
collateral  securing  this Note,  or with  respect to any Borrower or any person
liable under this Note or other Loan Documents, all without notice to or consent
of any  Borrower  or any person who may be liable  under this Note or other Loan
Documents and without  affecting the liability of Borrower or any person who may
be liable under this Note or other Loan Documents.

                                     Page 3

<PAGE>

MISCELLANEOUS PROVISIONS.  Assignment.  This Note and other Loan Documents shall
inure to the benefit of and be binding  upon the  parties  and their  respective
heirs, legal  representatives,  successors and assigns.  Bank's interests in and
rights under this Note and other Loan Documents are freely assignable,  in whole
or in part, by Bank. Borrower shall not assign its rights and interest hereunder
without the prior written consent of Bank, and any attempt by Borrower to assign
without Bank's prior written consent is null and void. Any assignment  shall not
release  Borrower  from  the  Obligations.   Applicable  Law;  Conflict  Between
Documents. This Note and other Loan Documents shall be governed by and construed
under the laws of the state  where Bank  first  shown  above is located  without
regard to that state's  conflict of laws  principles.  If the terms of this Note
should  conflict with the terms of the loan agreement or any  commitment  letter
that  survives  closing,  the terms of this Note  shall  control.  Jurisdiction.
Borrower irrevocably agrees to non-exclusive  personal jurisdiction in the state
in which the office of Bank first shown above is located.  Severability.  If any
provision of this Note or of the other Loan  Documents  shall be  prohibited  or
invalid under  applicable  law, such provision  shall be ineffective but only to
the extent of such prohibition or invalidity, without invalidating the remainder
of such  provision  or the  remaining  provisions  of this  Note or  other  such
document.  Notices.  Any notices to Borrower shall be sufficiently  given, if in
writing and mailed or delivered to the  Borrower's  address  shown above or such
other  address as provided  hereunder,  and to Bank, if in writing and mailed or
delivered to Bank's office address shown above or such other address as Bank may
specify  in  writing  from time to time.  In the  event  that  Borrower  changes
Borrower's  address  at any time prior to the date the  Obligations  are paid in
full,  Borrower agrees to promptly give written notice of said change of address
by registered or certified mail, return receipt requested,  all charges prepaid.
Plural;  Captions. All references in the Loan Documents to Borrower,  guarantor,
person,  document or other nouns of reference  mean both the singular and plural
form,  as the case may be,  and the term  "person"  shall  mean any  individual,
person or entity.  The captions contained in the Loan Documents are inserted for
convenience only and shall not affect the meaning or  interpretation of the Loan
Documents.  Binding Contract. Borrower by execution of and Bank by acceptance of
this Note  agree that each  party is bound to all terms and  provisions  of this
Note.  Advances.  Bank in its  sole  discretion  may  make  other  advances  and
readvances  under this Note pursuant hereto.  Posting of Payments.  All payments
received during normal banking hours after 2:00 p.m. local time at the office of
Bank first  shown  above  shall be deemed  received  at the  opening of the next
banking  day.  Joint and  Several  Obligations.  Each  Borrower  is jointly  and
severally obligated under this Note. Fees and Taxes. Borrower shall promptly pay
all documentary, intangible recordation and/or similar taxes on this transaction
whether assessed at closing or arising from time to time.

WAIVER OF JURY TRIAL.  TO THE EXTENT  PERMITTED BY APPLICABLE  LAW,  BORROWER BY
EXECUTION  HEREOF AND BANK BY  ACCEPTANCE  HEREOF,  KNOWINGLY,  VOLUNTARILY  AND
INTENTIONALLY WAIVE ANY RIGHT THEY MAY HAVE TO A TRIAL BY JURY IN RESPECT OF ANY
LITIGATION  BASED ON THIS NOTE, OR ARISING OUT OF, UNDER OR IN  CONNECTION  WITH
THIS NOTE OR ANY AGREEMENT  CONTEMPLATED  TO BE EXECUTED IN CONNECTION WITH THIS
NOTE, OR ANY COURSE OF CONDUCT, COURSE OF DEALING, STATEMENTS (WHETHER VERBAL OR
WRITTEN)  OR ACTIONS OF ANY PARTY  WITH  RESPECT  HERETO.  THIS  PROVISION  IS A
MATERIAL INDUCEMENT TO BANK TO ACCEPT THIS NOTE.

BORROWER  AND BANK  AGREE  THAT  THEY  SHALL NOT HAVE A REMEDY  OF  PUNITIVE  OR
EXEMPLARY DAMAGES AGAINST THE OTHER IN ANY DISPUTE AND HEREBY WAIVE ANY RIGHT OR
CLAIM TO PUNITIVE OR  EXEMPLARY  DAMAGES THEY HAVE NOW OR WHICH MAY ARISE IN THE
FUTURE IN  CONNECTION  WITH ANY  DISPUTE  WHETHER  THE  DISPUTE IS  RESOLVED  BY
ARBITRATION OR JUDICIALLY.

                                     Page 4

<PAGE>


IN WITNESS  WHEREOF,  Borrower,  on the day and year first  above  written,  has
caused this Note to be executed under seal.

                           Oak Tree Medical Management, Inc.
                           Taxpayer Identification Number: 13-3906760


CORPORATE                  By:______________________________________________
SEAL                           William Kedersha, President

                           By:______________________________________________
                               Michael Gerber, Executive Vice President

                                     Page 5

<PAGE>

                                 PROMISSORY NOTE


  $200,000.00                                                 September 30, 1996

Oak Tree Medical Management, Inc.
2 Gannett Drive, Suite 215
White Plains, New York 10601
(Individually and collectively "Borrower")

First Union National Bank
50 Main Street
White Plains, New York 10606
(Hereinafter referred to as the "Bank")

Borrower  promises  to pay to the order of Bank,  in lawful  money of the United
States of  America,  at its office  indicated  above or  wherever  else Bank may
specify,  the sum of Two Hundred  Thousand and No/100 Dollars  ($200,000.00)  or
such sum as may be  advanced  from  time to time  with  interest  on the  unpaid
principal  balance at the rate and on the terms provided in this Promissory Note
(including all renewals, extensions or modifications hereof, this "Note").

SECURITY.  Borrower  has  granted  Bank a security  interest  in the  collateral
described  in the  Loan  Documents,  including,  but not  limited  to,  personal
property  collateral  described in that certain Security  Agreement of even date
herewith.

INTEREST  RATE.  Interest shall accrue on the unpaid  principal  balance of this
Note from the date hereof at the rate of Bank's  Prime Rate plus 1.0% (100 basis
points) as that rate may change  from time to time with  changes to occur on the
date Bank's Prime Rate  changes  ("Interest  Rate").  Bank's Prime Rate shall be
that rate  announced  by Bank from time to time as its Prime  Rate and is one of
several  interest  rate bases  used by Bank.  Bank lends at rates both above and
below Bank's Prime Rate, and Borrower acknowledges that Bank's Prime Rate is not
represented  or  intended  to be the lowest or most  favorable  rate of interest
offered by Bank.

DEFAULT  RATE.  In addition to all other  rights  contained  in this Note,  if a
Default  (defined  herein)  occurs  and as  long  as a  Default  continues,  all
outstanding  Obligations  shall  bear  interest  at the  Interest  Rate  plus 3%
("Default Rate").  The Default Rate shall also apply from acceleration until the
Obligations or any judgment thereon is paid in full.

INTEREST COMPUTATION. (Actual/360). Interest shall be computed on the basis of a
360-day year for the actual number of days in the interest  period  ("Actual/360
Computation").  The  Actual/360  Computation  determines  the  annual  effective
interest yield by taking the stated (nominal)  interest rate for a year's period
and then dividing  said rate by 360 to determine  the daily  periodic rate to be
applied  for each day in the  interest  period.  Application  of the  Actual/360
Computation produces an annualized effective interest rate exceeding that of the
nominal rate.

REPAYMENT  TERMS.  This Note  shall be due and  payable in  consecutive  monthly
payments of accrued  interest only  commencing  on October 30, 1996,  and on the
same day of each month  thereafter until fully paid. In any event, all principal
and accrued interest shall be due and payable on September 30, 1997.

APPLICATION OF PAYMENTS. Monies received by Bank from any source for application
toward payment of the Obligations  shall be applied to accrued interest and then
to principal. If a Default

                                     Page 1


<PAGE>

occurs,  monies may be applied to the  Obligations in any manner or order deemed
appropriate by Bank.

If any  payment  received  by Bank under this Note or other  Loan  Documents  is
rescinded,  avoided or for any reason  returned  by Bank  because of any adverse
claim or threatened  action,  the returned  payment  shall remain  payable as an
obligation  of all persons  liable  under this Note or other Loan  Documents  as
though such payment had not been made.

LOAN DOCUMENTS AND OBLIGATIONS.  The term "Loan Documents" used in this Note and
other Loan  Documents  refers to all documents  executed in connection  with the
loan evidenced by this Note and may include,  without  limitation,  a commitment
letter that survives closing, a loan agreement,  this Note, guaranty agreements,
security  agreements,  security  instruments,   financing  statements,  mortgage
instruments,  letters of credit and any renewals or modifications,  but however,
does not  include  swap  agreements  as  defined in 11 U.S.C.  ss. 101  whenever
executed.

The term  "Obligations" used in this Note refers to any and all indebtedness and
other  obligations  under this  Note,  all other  obligations  as defined in the
respective  Loan  Documents,  and all  obligations  under any swap agreements as
defined in 11 U.S.C. ss. 101 between Borrower and Bank whenever executed.

LATE CHARGE.  If any payments  are not timely made,  Borrower  shall also pay to
Bank a late charge equal to 5% of each payment past due for 10 or more days.

Acceptance by Bank of any late payment without an accompanying late charge shall
not be deemed a waiver of Bank's right to collect such late charge or to collect
a late charge for any subsequent late payment received.

If this Note is secured by  owner-occupied  residential  real  property  located
outside the state in which the office of Bank first shown above is located,  the
late charge laws of the state where the real  property is located shall apply to
this Note, or if permitted  under the law of that state, 5% of each payment past
due for 10 or more days.

ATTORNEYS'  FEES AND OTHER  COLLECTION  COSTS.  Borrower shall pay all of Bank's
reasonable  expenses  incurred  to enforce or  collect  any of the  Obligations,
including, without limitation, reasonable arbitration,  paralegals',  attorneys'
and experts' fees and expenses,  whether  incurred without the commencement of a
suit,  in  any  trial,  arbitration,  or  administrative  proceeding,  or in any
appellate or bankruptcy proceeding.

USURY.  Regardless of any other  provision of this Note or other Loan Documents,
if for any reason the  effective  interest  should  exceed  the  maximum  lawful
interest,  the effective interest shall be deemed reduced to, and shall be, such
maximum lawful  interest,  and (i) the amount which would be excessive  interest
shall be deemed  applied to the reduction of the principal  balance of this Note
and not to the payment of interest,  and (ii) if the loan evidenced by this Note
has been or is thereby  paid in full,  the excess shall be returned to the party
paying  same,  such  application  to the  principal  balance of this Note or the
refunding of excess to be a complete settlement and acquittance thereof.

BORROWER'S  ACCOUNTS.  Except  as  prohibited  by law,  Borrower  grants  Bank a
security  interest  in all of  Borrower's  accounts  with  Bank  and  any of its
affiliates.

DEFAULT.  If any of the following occurs, a default  ("Default") under this Note
shall  exist:  Nonpayment;  Nonperformance.  The  failure  of timely  payment or
performance  of the  Obligations  under this Note or any other  Loan  Documents.
False  Warranty.  A warranty or  representation  made

                                     Page 2


<PAGE>
in the Loan Documents or furnished Bank in connection with the loan evidenced by
this  Note  proves  materially  false,  or if of a  continuing  nature,  becomes
materially  false.  Cross Default.  At Bank's option,  any default in payment or
performance of any obligation under any other loans,  contracts or agreements of
Borrower, any Subsidiary or Affiliate of Borrower, any general partner of or the
holder(s)  of the  majority  ownership  interests  of Borrower  with Bank or its
affiliates  ("Affiliate" shall have the meaning as defined in 11 U.S.C. ss. 101,
except  that  the  term  "debtor"  therein  shall  be  substituted  by the  term
"Borrower"  herein;  "Subsidiary"  shall mean any corporation of which more than
50% of the issued and  outstanding  voting stock is owned directly or indirectly
by Borrower). Cessation;  Bankruptcy. The death of, appointment of guardian for,
dissolution  of,  termination of existence of, loss of good standing  status by,
appointment  of a receiver for,  assignment  for the benefit of creditors of, or
commencement  of any  bankruptcy  or  insolvency  proceeding  by or against  the
Borrower,  its Subsidiaries or Affiliates,  if any, or any general partner of or
the holder(s) of the majority ownership  interests of Borrower,  or any party to
the Loan Documents.  Material Capital Structure or Business Alteration.  Without
prior written consent of Bank, (i) a material  alteration in the kind or type of
Borrower's business or that of its Subsidiaries or Affiliates,  if any; (ii) the
acquisition  of  substantially  all  of  Borrower's,   any   Subsidiary's,   any
Affiliate's,  or guarantor's  business or assets,  or a material portion (10% or
more) of such  business  or assets  if such a sale is  outside  Borrower's,  any
Subsidiary's,  any Affiliate's or any guarantor's,  ordinary course of business,
or  more  than  50% of  its  outstanding  stock  or  voting  power  in a  single
transaction or a series of transactions;  (iii) the acquisition of substantially
all of the  business  or  assets or more  than 50% of the  outstanding  stock or
voting  power of any other  entity;  or (iv)  should any  Borrower,  Subsidiary,
Affiliate, or guarantor enter into any merger or consolidation.

REMEDIES  UPON  DEFAULT.  If a  Default  occurs  under  this  Note  or any  Loan
Documents,  Bank may at any time thereafter,  take the following  actions:  Bank
Lien and Set-off.  Exercise  its right of set-off or to  foreclose  its security
interest or lien against any account of any nature or maturity of Borrower  with
Bank without notice.  Acceleration Upon Default. Accelerate the maturity of this
Note and all other Obligations,  and all of the Obligations shall be immediately
due and payable. Cumulative.  Exercise any rights and remedies as provided under
the Note and other Loan Documents, or as provided by law or equity.

FINANCIAL AND OTHER INFORMATION. Borrower shall deliver to Bank such information
as Bank may reasonably request from time to time,  including without limitation,
financial   statements  and  information   pertaining  to  Borrower's  financial
condition. Such information shall be true, complete, and accurate.

LINE OF CREDIT ADVANCES.  Borrower may borrow, repay and reborrow,  and Bank may
advance and readvance under this Note respectively from time to time, so long as
the total indebtedness outstanding at any one time does not exceed the principal
amount  stated  on the  face of this  Note.  Bank's  obligation  to  advance  or
readvance  under this Note shall  terminate if Borrower is in Default under this
Note.  30-Day Payout.  During the term of the Note,  Borrower agrees to pay down
the  outstanding  balance  to a  maximum  of  $100.00  for 30  consecutive  days
annually.

WAIVERS AND AMENDMENTS. No waivers, amendments or modifications of this Note and
other Loan  Documents  shall be valid unless in writing and signed by an officer
of Bank. No waiver by Bank of any Default shall operate as a waiver of any other
Default or the same  Default on a future  occasion.  Neither the failure nor any
delay on the part of Bank in exercising any right,  power,  or remedy under this
Note and other Loan  Documents  shall operate as a waiver  thereof,  nor shall a
single or  partial  exercise  thereof  preclude  any other or  further  exercise
thereof or the exercise of any other right, power or remedy.


                                     Page 3


<PAGE>

Each Borrower or any person liable under this Note waives presentment,  protest,
notice of  dishonor,  demand for  payment,  notice of  intention  to  accelerate
maturity,  notice  of  acceleration  of  maturity,  notice of sale and all other
notices of any kind. Further,  each agrees that Bank may extend, modify or renew
this Note or make a novation of the loan  evidenced  by this Note for any period
and  grant  any  releases,  compromises  or  indulgences  with  respect  to  any
collateral  securing  this Note,  or with  respect to any Borrower or any person
liable under this Note or other Loan Documents, all without notice to or consent
of any  Borrower  or any person who may be liable  under this Note or other Loan
Documents and without  affecting the liability of Borrower or any person who may
be liable under this Note or other Loan Documents.

MISCELLANEOUS PROVISIONS.  Assignment.  This Note and other Loan Documents shall
inure to the benefit of and be binding  upon the  parties  and their  respective
heirs, legal  representatives,  successors and assigns.  Bank's interests in and
rights under this Note and other Loan Documents are freely assignable,  in whole
or in part, by Bank. Borrower shall not assign its rights and interest hereunder
without the prior written consent of Bank, and any attempt by Borrower to assign
without Bank's prior written consent is null and void. Any assignment  shall not
release  Borrower  from  the  Obligations.   Applicable  Law;  Conflict  Between
Documents. This Note and other Loan Documents shall be governed by and construed
under the laws of the state  where Bank  first  shown  above is located  without
regard to that state's  conflict of laws  principles.  If the terms of this Note
should  conflict with the terms of the loan agreement or any  commitment  letter
that  survives  closing,  the terms of this Note  shall  control.  Jurisdiction.
Borrower irrevocably agrees to non-exclusive  personal jurisdiction in the state
in which the office of Bank first shown above is located.  Severability.  If any
provision of this Note or of the other Loan  Documents  shall be  prohibited  or
invalid under  applicable  law, such provision  shall be ineffective but only to
the extent of such prohibition or invalidity, without invalidating the remainder
of such  provision  or the  remaining  provisions  of this  Note or  other  such
document.  Notices.  Any notices to Borrower shall be sufficiently  given, if in
writing and mailed or delivered to the  Borrower's  address  shown above or such
other  address as provided  hereunder,  and to Bank, if in writing and mailed or
delivered to Bank's office address shown above or such other address as Bank may
specify  in  writing  from time to time.  In the  event  that  Borrower  changes
Borrower's  address  at any time prior to the date the  Obligations  are paid in
full,  Borrower agrees to promptly give written notice of said change of address
by registered or certified mail, return receipt requested,  all charges prepaid.
Plural;  Captions. All references in the Loan Documents to Borrower,  guarantor,
person,  document or other nouns of reference  mean both the singular and plural
form,  as the case may be,  and the term  "person"  shall  mean any  individual,
person or entity.  The captions contained in the Loan Documents are inserted for
convenience only and shall not affect the meaning or  interpretation of the Loan
Documents.  Binding Contract. Borrower by execution of and Bank by acceptance of
this Note  agree that each  party is bound to all terms and  provisions  of this
Note.  Advances.  Bank in its  sole  discretion  may  make  other  advances  and
readvances  under this Note pursuant hereto.  Posting of Payments.  All payments
received during normal banking hours after 2:00 p.m. local time at the office of
Bank first  shown  above  shall be deemed  received  at the  opening of the next
banking  day.  Joint and  Several  Obligations.  Each  Borrower  is jointly  and
severally obligated under this Note. Fees and Taxes. Borrower shall promptly pay
all documentary, intangible recordation and/or similar taxes on this transaction
whether assessed at closing or arising from time to time.

WAIVER OF JURY TRIAL.  TO THE EXTENT  PERMITTED BY APPLICABLE  LAW,  BORROWER BY
EXECUTION  HEREOF AND BANK BY  ACCEPTANCE  HEREOF,  KNOWINGLY,  VOLUNTARILY  AND
INTENTIONALLY WAIVE ANY RIGHT THEY MAY HAVE TO A TRIAL BY JURY IN RESPECT OF ANY
LITIGATION  BASED ON THIS NOTE, OR ARISING OUT OF, UNDER OR IN  CONNECTION  WITH
THIS NOTE OR ANY AGREEMENT  CONTEMPLATED  TO BE EXECUTED IN CONNECTION WITH THIS
NOTE, OR ANY COURSE OF CONDUCT, COURSE OF DEALING, STATEMENTS (WHETHER VERBAL OR
WRITTEN)  OR ACTIONS OF ANY PARTY  WITH  RESPECT  HERETO.  THIS  PROVISION  IS A
MATERIAL INDUCEMENT TO BANK TO ACCEPT THIS NOTE.


                                     Page 4


<PAGE>

BORROWER  AND BANK  AGREE  THAT  THEY  SHALL NOT HAVE A REMEDY  OF  PUNITIVE  OR
EXEMPLARY DAMAGES AGAINST THE OTHER IN ANY DISPUTE AND HEREBY WAIVE ANY RIGHT OR
CLAIM TO PUNITIVE OR  EXEMPLARY  DAMAGES THEY HAVE NOW OR WHICH MAY ARISE IN THE
FUTURE IN  CONNECTION  WITH ANY  DISPUTE  WHETHER  THE  DISPUTE IS  RESOLVED  BY
ARBITRATION OR JUDICIALLY.

IN WITNESS  WHEREOF,  Borrower,  on the day and year first  above  written,  has
caused this Note to be executed under seal.

                           Oak Tree Medical Management, Inc.
                           Taxpayer Identification Number: 13-3906760


CORPORATE                  By:______________________________________________
SEAL                           William Kedersha, President

                           By:______________________________________________
                               Michael Gerber, Executive Vice President


                                     Page 5

                             UNCONDITIONAL GUARANTY

                                                              September 30, 1996


Oak Tree Medical Management, Inc.
2 Gannett Drive, Suite 215
White Plains, New York 10601
(Individually and collectively "Borrower")

Oak Tree Medical Systems, Inc.
1111 Park Centre Blvd., Suite 340
Miami, Florida 33169
(Individually and collectively "Guarantor")

First Union National Bank
50 Main Street
White Plains, New York 10606
(Hereinafter referred to as "Bank")

To  induce  Bank to make,  extend or renew  loans,  advances,  credit,  or other
financial   (accommodations   to  or  for  the  benefit  of  Borrower,   and  in
consideration  of loans,  advances,  credit,  or other financial  accommodations
made,  extended or renewed to or for the benefit of Borrower,  Guarantor  hereby
absolutely,   irrevocably  and  unconditionally   guarantees  to  Bank  and  its
successors,  assigns and affiliates  the timely  payment and  performance of all
liabilities and  obligations of Borrower to Bank and its affiliates,  including,
but not limited to, all obligations under any notes,  loan agreements,  security
agreements,  letters of credit,  swap agreements (as defined in 11 U.S. Code ss.
101),  instruments,  accounts receivable,  contracts,  drafts,  leases,  chattel
paper, indemnities, acceptances, repurchase agreements, overdrafts, and the Loan
Documents  defined below,  however and whenever  incurred or evidenced,  whether
primary,  secondary,  direct, indirect,  absolute,  contingent, due or to become
due, now existing or hereafter  contracted or acquired,  and all  modifications,
extensions or renewals  thereof,  including  without  limitation  all principal,
interest,  charges,  and  costs  and  expenses  incurred  thereunder  (including
attorneys'  fees and other costs of collection  incurred,  regardless of whether
suit is commenced) (collectively, the "Guaranteed Obligations").

Guarantor further covenants and agrees:

GUARANTOR'S LIABILITY.  This Guaranty is a continuing and unconditional guaranty
of payment and performance  and not of collection.  The parties to this Guaranty
are jointly and severally obligated hereunder. This Guaranty does not impose any
obligation on Bank to extend or continue to extend credit or otherwise deal with
Borrower at any subsequent time. This Guaranty shall continue to be effective or
be  reinstated,  as the case may be, if at any time any  payment  of  Guaranteed
Obligations is rescinded, avoided or for any other reason must be


<PAGE>

returned by Bank,  and the returned  payment shall remain payable as part of the
Guaranteed Obligations,  all as though such payment had not been made. Except to
the extent the  provisions of this Guaranty give Bank  additional  rights,  this
Guaranty shall not be deemed to supersede or replace any other  guaranties given
to Bank by Guarantor; and the obligations guaranteed hereby shall be in addition
any other obligations guaranteed by Guarantor pursuant to any other agreement of
guaranty given to Bank and other guaranties of the Guaranteed Obligations.

TERMINATION  OF  GUARANTY.  Guarantor  may  terminate  this  Guaranty by written
notice,  delivered  personally to or received by certified or registered  United
States  Mail by an  authorized  officer of the Bank at the  address  for notices
provided herein.  Such termination shall be effective with respect to Guaranteed
Obligations  arising  more than 15 days  after the date such  written  notice is
received by said Bank officer.  Guarantor may not terminate  this Guaranty as to
Guaranteed Obligations  (including any subsequent  extensions,  modifications or
compromises  of the  Guaranteed  Obligations)  then  existing,  or to Guaranteed
Obligations  arising  subsequent  to  receipt  by Bank of  said  notice  if such
Guaranteed  Obligations  are a result  of  Bank's  obligation  to make  advances
pursuant to a commitment  entered into prior to  expiration of the 15 day notice
period,  or are a result of advances which are necessary for Bank to protect its
collateral or otherwise preserve its interests.  Termination of this Guaranty by
any single Guarantor will not affect the existing and continuing  obligations of
any other guarantor hereunder.

AFFIRMATIVE COVENANT.  Guarantor agrees that from the date of this Agreement and
until final  payment in full of the  Obligations,  unless  Bank shall  otherwise
consent in writing, Guarantor will: Reports and Proxies. Guarantor shall deliver
to First Union, promptly, a copy of all financial statements,  reports, notices,
and proxy  statements,  sent by  Guarantor to  stockholders,  and all regular or
periodic reports required to be filed by Guarantor with any governmental  agency
or authority.

NEGATIVE  COVENANTS.  Guarantor  agrees that from the date of this Agreement and
until final  payment in full of the  Obligations,  unless  Bank shall  otherwise
consent  in  writing,   Guarantor  will  not:  Default  on  Other  Contracts  or
Obligations.  Default on any material  contract with or obligation when due to a
third party or default in the  performance  of any  obligation  to a third party
incurred for money borrowed.  Judgment Entered. Permit the entry of any monetary
judgment or the assessment  against,  the filing of any tax lien against, or the
issuance of any writ of  garnishment  or  attachment  against any property of or
debts  due  Guarantor  in an amount  in  excess  of  $25,000.00  and that is not
discharged or execution is not stayed  within Thirty (30) days of entry.  Change
in Fiscal Year.  Guarantor  shall not change its fiscal year without the consent
of Bank.  Guarantees.  Guarantee or otherwise become responsible for obligations
of any other  person or persons in an aggregate  amount in excess of  $10,000.00
per fiscal year,  other than the endorsement of checks and drafts for collection
in the ordinary course of business.  Encumbrances.  Create, assume, or permit to
exist any mortgage,  security deed, deed of trust, pledge, lien, charge or other
encumbrance on any of its assets, whether now owned or hereafter acquired, other
than: (i) security interests required by the Loan

                                      - 2 -


<PAGE>

Documents; (ii) liens for taxes contested in good faith; (iii) liens accruing by
law for employee benefits; or (iv) Permitted Liens.

FINANCIAL COVENANTS. Guarantor, on a consolidated basis, agrees to the following
provisions  from the date of this  Agreement  and until final payment in full of
the Obligations,  unless Bank shall otherwise consent in writing: Current Ratio.
Guarantor and its subsidiaries shall, at all times,  maintain a Current Ratio of
not less than 2.00 to 1.00.  "Current  Ratio"  shall  mean the ratio of  current
assets  divided by  current  liabilities.  Working  Capital.  Guarantor  and its
subsidiaries  shall,  at  all  times,  maintain  Working  Capital  of  at  least
$2,000,000.00.  "Working  Capital"  shall mean the excess of the current  assets
over the current liabilities. Tangible Net Worth. Guarantor and its subsidiaries
shall,  at all times,  maintain  Tangible  Net Worth of at least  $6,000,000.00.
"Tangible  Net Worth" shall mean the total assets minus total  liabilities.  For
purposes of this  computation,  the aggregate amount of any intangible assets of
Guarantor  including,  without  limitation,   goodwill,  franchises,   licenses,
patents,  trademarks,  trade names, copyrights,  service marks, and brand names,
shall be subtracted from total assets, and total liabilities shall include fully
subordinated debt. Total Liabilities to Tangible Net Worth Ratio.  Guarantor and
its  subsidiaries  shall, at all times,  maintain a ratio of Total  Liabilities,
including  fully  subordinated  debt,  divided by Tangible Net Worth of not more
than 3.00 to 1.00. For purposes of this computation,  "Total  Liabilities" shall
mean all liabilities of Guarantor, including capitalized leases and all reserves
for deferred taxes and other deferred sums appearing on the liabilities  side of
a balance sheet of Guarantor,  in accordance with generally accepted  accounting
principles applied on a consistent basis. Debt Service Coverage Ratio. Guarantor
and its  subsidiaries  shall at all times maintain a Debt Service Coverage Ratio
of not less than 2.00 to 1.00.  "Debt Service Coverage Ratio" shall mean the sum
of net profit plus  interest  expense plus income tax expense plus  depreciation
and amortization divided by the sum of interest expense plus the current portion
of long term debt and  capital  leases plus income tax  expense.  Limitation  on
Debt.  Guarantor  and its  subsidiaries  shall not,  without  the  Bank's  prior
written, directly or indirectly,  create, incur, assume or become liable for any
debt,  contingent or direct,  if, giving effect to such additional debt on a pro
forma  basis,  causes  the  aggregate  amount  of  Guarantor's  debt,  including
obligations  to Bank, to exceed  $1,300,000.00.  Loans and  Advances.  Guarantor
shall not,  during any fiscal year, make loans or advances,  excepting  ordinary
course of business travel and expense advances,  to any person or entity,  which
total more than $10,000.00 in the aggregate.

APPLICATION OF PAYMENTS,  BANK LIEN AND SET-OFF. Monies received from any source
by Bank for  application  toward  payment of the Guaranteed  Obligations  may be
applied to such Guaranteed Obligations in any manner or order deemed appropriate
by Bank. Except as prohibited by law,  Guarantor grants Bank a security interest
in all of Guarantor's  accounts  maintained  with Bank and any of its affiliates
(collectively,  the  "Accounts").  If a Default  occurs,  Bank is  authorized to
exercise its right of set-off or to foreclose its lien against any obligation of
Bank to Guarantor including,  without limitation, all Accounts or any other debt
of any maturity, without notice.


                                      - 3 -


<PAGE>

CONSENT TO MODIFICATIONS.  Guarantor consents and agrees that Bank may from time
to time, in its sole  discretion,  without  affecting,  impairing,  lessening or
releasing the obligations of the Guarantor  hereunder:  (a) extend or modify the
time,  manner,  place or terms of payment or performance and/or otherwise change
or modify the credit terms of the Guaranteed Obligations;  (b) increase,  renew,
or enter into a novation of the Guaranteed Obligations;  (c) waive or consent to
the departure from terms of the Guaranteed Obligations; (d) permit any change in
the business or other dealings and relations of Borrower or any other  guarantor
with Bank; (e) proceed against,  exchange,  release,  realize upon, or otherwise
deal  with  in any  manner  any  collateral  that  is or may be  held by Bank in
connection with the Guaranteed  Obligations or any liabilities or obligations of
Guarantor;  and  (f)  proceed  against,  settle,  release,  or  compromise  with
Borrower,  any insurance carrier, or any other person or entity liable as to any
part of the Guaranteed  Obligations,  and/or subordinate the payment of any part
of the Guaranteed Obligations to the payment of any other obligations, which may
at any time be due or owing to Bank;  all in such  manner and upon such terms as
Bank may deem  appropriate,  and  without  notice  to or  further  consent  from
Guarantor.  No invalidity,  irregularity,  discharge or unenforceability  of, or
action or omission by Bank relating to any part of, the  Guaranteed  Obligations
or any security therefor shall affect or impair this Guaranty.

WAIVERS AND ACKNOWLEDGMENTS. Guarantor waives and releases the following rights,
demands,  and defenses Guarantor may have with respect to Bank and collection of
the Guaranteed Obligations: (a) promptness and diligence in collection of any of
the Guaranteed Obligations from Borrower or any other person liable thereon, and
in  foreclosure  of any security  interest  and sale of any property  serving as
collateral for the Guaranteed Obligations;  (b) any law or statute that requires
that Bank make demand upon,  assert claims against,  or collect from Borrower or
other persons or entities,  foreclose any security  interest,  sell  collateral,
exhaust any remedies, or take any other action against Borrower or other persons
or  entities  prior to making  demand  upon,  collecting  from or taking  action
against Guarantor with respect to the Guaranteed Obligations, including any such
rights  Guarantor  might otherwise have had under Va. Code ss. 49- 25 and 49-26,
et seq., N.C.G.S. ss. 26-7, et seq., Tenn. Code Ann. ss. 47-12-101, O.C.G.A. ss.
10-7-24 (and any successor statute) and any other applicable law; (c) any law or
statute that requires  that Borrower or any other person be joined in,  notified
of or made part of any action against Guarantor; (d) that Bank preserve,  insure
or perfect any security  interest in collateral or sell or dispose of collateral
in a  particular  manner or at a  particular  time;  (e)  notice of  extensions,
modifications,  renewals, or novations of the Guaranteed Obligations, of any new
transactions or other relationships between Bank, Borrower and/or any guarantor,
and of  changes  in the  financial  condition  of,  ownership  of,  or  business
structure of Borrower or any other guarantor;  (f) presentment,  protest, notice
of  dishonor,  notice of default,  demand for  payment,  notice of  intention to
accelerate maturity, notice of acceleration of maturity, notice of sale, and all
other notices of any kind  whatsoever;  (g) the right to assert against Bank any
defense (legal or equitable), set-off, counterclaim, or claim that Guarantor may
have at any time  against  Borrower or any other party  liable to Bank;  (h) all
defenses relating to invalidity, insufficiency,  unenforceability,  enforcement,
release or impairment of Bank's lien on any  collateral,  of the Loan Documents,
or of any other guaranties held by Bank; (i) any claim or defense that


                                      - 4 -


<PAGE>

acceleration  of  maturity  of the  Guaranteed  Obligations  is  stayed  against
Guarantor  because of the stay of assertion or of acceleration of claims against
any other person or entity for any reason including the bankruptcy or insolvency
of that  person or  entity;  and (j) the  benefit  of any  exemption  claimed by
Guarantor. Guarantor acknowledges and represents that it has relied upon its own
due diligence in making its own  independent  appraisal of Borrower,  Borrower's
business  affairs and financial  condition,  and any collateral;  Guarantor will
continue to be  responsible  for making its own  independent  appraisal  of such
matters; and Guarantor has not relied upon and will not hereafter rely upon Bank
for information regarding Borrower or any collateral.

FINANCIAL CONDITION.  Guarantor warrants,  represents and covenants to Bank that
on and after the date hereof:  (a) the fair saleable value of Guarantor's assets
exceeds its  liabilities,  Guarantor is meeting its current  liabilities as they
mature, and Guarantor is and shall remain solvent;  (b) all financial statements
of Guarantor  furnished to Bank are correct and accurately reflect the financial
condition of Guarantor as of the respective dates thereof; (c) since the date of
such financial  statements,  there has not occurred a material adverse change in
the financial condition of Guarantor; (d) there are not now pending any court or
administrative  proceedings or  undischarged  judgments  against  Guarantor,  no
federal or state tax liens have been filed or threatened against Guarantor,  and
Guarantor is not in debut or claimed  default  under any  agreement;  and (e) at
such  reasonable  times as Bank requests,  Guarantor will furnish Bank with such
other financial information as Bank may reasonably request.

INTEREST.  Regardless  of any other  provision  of this  Guaranty  or other Loan
Documents,  if for any reason the  effective  interest on any of the  Guaranteed
Obligations  should exceed the maximum lawful interest,  the effective  interest
shall be deemed  reduced to and shall be such maximum lawful  interest,  and any
sums of interest  which have been  collected  in excess of such  maximum  lawful
interest  shall be applied as a credit against the unpaid  principal  balance of
the Guaranteed Obligations.

DEFAULT.  If any of the following events occur, a default ("Default") under this
Guaranty  shall  exist:  (a)  Failure of timely  payment or  performance  of the
Guaranteed Obligations or a default under any Loan Document; (b) A breach of any
agreement or representation  contained or referred to in the Guaranty, or any of
the Loan Documents, or contained in any other contract or agreement of Guarantor
with Bank or its affiliates,  whether now existing or hereafter arising; (c) The
death  of,  appointment  of a  guardian  for,  dissolution  of,  termination  of
existence of, loss of good standing  status by,  appointment  of a receiver for,
assignment  for  the  benefit  of  creditors  of,  or  the  commencement  of any
insolvency  or  bankruptcy  proceeding  by or against,  Guarantor or any general
partner of or the  holder(s) of the majority  ownership  interests of Guarantor;
and/or (d) The entry of any monetary  judgment or the  assessment  against,  the
filing of any tax lien against,  or the issuance of any writ of  garnishment  or
attachment against any property of or debts due Guarantor.

If a Default  occurs,  the Guaranteed  Obligations  shall be due immediately and
payable  without  notice.   Guarantor  shall  pay  interest  on  the  Guaranteed
Obligations from such Default at the


                                      - 5 -


<PAGE>

highest rate of interest charged on any of the Guaranteed Obligations.

ATTORNEY'S FEES AND OTHER COSTS OF COLLECTION. Guarantor shall pay all of Bank's
reasonable  expenses  incurred  to  enforce  or  collect  any of the  Guaranteed
Obligations, including, without limitation, reasonable arbitration, paralegals',
attorneys'  and  experts'  fees  and  expenses,  whether  incurred  without  the
commencement of a suit, in any suit, arbitration,  or administrative proceeding,
or in any appellate or bankruptcy proceeding.

SUBORDINATION  OF  OTHER  DEBTS.   Guarantor  agrees:  (a)  to  subordinate  the
obligations now or hereafter owed by Borrower to Guarantor ("Subordinated Debt")
to any and all  obligations of Borrower to Bank now or hereafter  existing while
this  Guaranty  is in  effect,  provided  however  that  Guarantor  may  receive
regularly  scheduled principal and interest payments on the Subordinated Debt so
long as (i) all sums due and  payable by Borrower to Bank have been paid in full
on or prior to such date,  and (ii) no event or condition  which  constitutes or
which with notice or the lapse or time would constitute an event of default with
respect  to the  Guaranteed  Obligations,  shall be  continuing  on or as of the
payment date; (b) Guarantor will place a legend indicating such subordination on
every  note,  ledger  page  or  other  document   evidencing  any  part  of  the
Subordinated Debt; and (c) except as punished by this paragraph,  Guarantor will
not  request  or  accept  payment  of or  any  security  for  any  part  of  the
Subordinated  Debt, and any proceeds of the Subordinated Debt paid to Guarantor,
through error or otherwise, shall immediately be forwarded to Bank by Guarantor,
properly endorsed to the order of Bank, to apply to the Guaranteed Obligations.

MISCELLANEOUS.  (a)  Assignment.  This Guaranty and other Loan  Documents  shall
inure to the benefit of and be binding  upon the  parties  and their  respective
heirs, legal  representatives,  successors and assigns.  Bank's interests in and
rights under this Guaranty and other Loan  Documents are freely  assignable,  in
whole or in part, by Bank. Any assignment  shall not release  Guarantor from the
Guaranteed  Obligations.  (b) Applicable Law; Conflict Between  Documents.  This
Guaranty and other Loan Documents  shall be governed by and construed  under the
laws of the state in which  office of Bank first shown above is located  without
regard  to that  state's  conflict  of laws  principles.  If the  terms  of this
Guaranty should  conflict with the terms of any commitment  letter that survives
closing, the terms of this Guaranty shall control.  (c) Jurisdiction.  Guarantor
irrevocably agrees to non-exclusive  personal jurisdiction in the state in which
the  office of Bank first  shown  above is  located.  (d)  Severability.  If any
provision of this Guaranty or of the other Loan Documents shall be prohibited or
invalid under  applicable  law, such provision  shall be ineffective but only to
the extent of such prohibition or invalidity, without invalidating the remainder
of such  provision  or the  remaining  provisions  of  this  Guaranty  or  other
document.  (e) Notices. Any notices to Guarantor shall be sufficiently given, if
in writing and mailed or delivered  to the  Guarantor's  address  shown above or
such other address as provided hereunder,  and to Bank, if in writing and mailed
or delivered to Bank's office  address shown above or such other address as Bank
may specify in writing from time to time.  In the event that  Guarantor  changes
Guarantor's address at any time prior to the date the Guaranteed Obligations are
paid in full, Guarantor agrees to promptly give written notice of said

                                      - 6 -


<PAGE>

change of address by registered or certified mail, return receipt requested, all
charges prepaid. (f) Plural;  Captions.  All references in the Loan Documents to
borrower,  guarantor, person, document or other nouns of reference mean both the
singular and plural form, as the case may be, and the term  "person"  shall mean
any individual,  person or entity.  The captions contained in the Loan Documents
are  inserted  for  convenience  only  and  shall  not  affect  the  meaning  or
interpretation  of the  Loan  Documents.  (g)  Binding  Contract.  Guarantor  by
execution of and Bank by acceptance  of this  Guaranty  agree that each party is
bound to all terms and provisions of this Guaranty. (h) Amendments,  Waivers and
Remedies.  No waivers,  amendments or  modifications  of this Guaranty and other
Loan  Documents  shall be valid  unless in  writing  and signed by an officer of
Bank.  No waiver by Bank of any Default  shall  operate as a waiver of any other
Default or the same  Default on a future  occasion.  Neither the failure nor any
delay on the part of Bank in exercising any right,  power, or privilege  granted
pursuant to this  Guaranty and other Loan  Documents  shall  operate as a waiver
thereof,  nor shall a single or partial  exercise  thereof preclude any other or
further  exercise or the exercise of any other right,  power or  privilege.  All
remedies  available  to Bank  with  respect  to this  Guaranty  and  other  Loan
Documents and remedies available at law or in equity shall be cumulative and may
be pursued  concurrently or successively.  (i)  Partnerships.  If Guarantor is a
partnership,  the  obligations,  liabilities  and  agreements  on  the  part  of
Guarantor   shall  remain  in  full  force  and  effect  and  fully   applicable
notwithstanding any changes in the individuals  comprising the partnership.  The
term  "Guarantor"   includes  any  altered  or  successive   partnerships,   and
predecessor  partnership(s)  and the  partners  shall not be  released  from any
obligations  or  liabilities  hereunder.  (j) Loan  Documents.  The  term  "Loan
Documents"  refers to all documents  executed in connection  with the Guaranteed
Obligations and may include, without limitation, commitment letters that survive
closing,  loan  agreements,  other  guaranty  agreements,  security  agreements,
instruments,  financing statements,  mortgages,  deeds of trust, deeds to secure
debt,  letters of credit  and any  amendments  or  supplements  (excluding  swap
agreements as defined in 11 U.S. Code ss. 101).

ANNUAL FINANCIAL  STATEMENTS.  Guarantor shall deliver to Bank,  within 120 days
after the close of each fiscal year, audited financial statements reflecting its
operations during such fiscal year,  including,  without  limitation,  a balance
sheet,  profit and loss statement and statement of cash flows,  with  supporting
schedules;  all on a  consolidated  and  consolidating  basis and in  reasonable
detail,  prepared in conformity with generally accepted  accounting  principles,
applied  on a  basis  consistent  with  that of the  preceding  year.  All  such
statements  shall be  examined by an  independent  certified  public  accountant
acceptable to Bank. The opinion of such independent  certified public accountant
shall not be  acceptable to Bank if qualified  due to any  limitations  in scope
imposed by Guarantor or its Subsidiaries, if any. Any other qualification of the
opinion by the  accountant  shall  render  the  acceptability  of the  financial
statements subject to Bank's approval.

PERIODIC  FINANCIAL  STATEMENTS.  Guarantor  shall  deliver  to  Bank  unaudited
management-prepared   quarterly   financial   statements,   including,   without
limitation,  a balance  sheet,  profit and loss  statement and statement of cash
flows, with supporting  schedules,  as soon as available and in any event within
30 days after the close of each such period; all in reasonable


                                      - 7 -


<PAGE>


detail and prepared in conformity with generally accepted accounting principles,
applied on a basis  consistent  with that of the preceding year. Such statements
shall be certified as to their  correctness by a principal  financial officer of
Guarantor.

FINANCIAL  AND  OTHER   INFORMATION.   Guarantor  shall  deliver  to  Bank  such
information as Bank may reasonably request from time to time,  including without
limitation,  financial  statements  and  information  pertaining to  Guarantor's
financial condition. Such information shall be true, complete, and accurate.

TAX RETURNS. Guarantor shall deliver to Bank, within 30 days of filing, complete
copies of federal and state tax returns,  as applicable,  each of which shall be
signed  and  certified  by  Guarantor  to be true and  complete  copies  of such
returns.  In the event an extension is filed,  Guarantor shall deliver a copy of
the extension within 30 days of filing.

WAIVER OF JURY TRIAL. TO THE EXTENT  PERMITTED BY APPLICABLE  LAW,  GUARANTOR BY
EXECUTION  HEREOF AND BANK BY  ACCEPTANCE  HEREOF,  KNOWINGLY,  VOLUNTARILY  AND
INTENTIONALLY WAIVE ANY RIGHT THEY MAY HAVE TO A TRIAL BY JURY IN RESPECT OF ANY
LITIGATION  BASED ON THIS  GUARANTY,  OR ARISING OUT OF, UNDER OR IN  CONNECTION
WITH THIS  GUARANTY OR ANY AGREEMENT  CONTEMPLATED  TO BE EXECUTED IN CONNECTION
WITH THIS  GUARANTY,  OR ANY COURSE OF CONDUCT,  COURSE OF  DEALING,  STATEMENTS
(WHETHER  VERBAL OR WRITTEN) OR ACTIONS OF ANY PARTY WITH RESPECT  HERETO.  THIS
PROVISION IS A MATERIAL INDUCEMENT TO BANK TO ACCEPT THIS GUARANTY.

GUARANTOR  AND BANK  AGREE  THAT THEY  SHALL NOT HAVE A REMEDY  OF  PUNITIVE  OR
EXEMPLARY DAMAGES AGAINST THE OTHER IN ANY DISPUTE AND HEREBY WAIVE ANY RIGHT OR
CLAIM TO PUNITIVE OR  EXEMPLARY  DAMAGES THEY HAVE NOW OR WHICH MAY ARISE IN THE
FUTURE IN  CONNECTION  WITH ANY  DISPUTE  WHETHER  THE  DISPUTE IS  RESOLVED  BY
ARBITRATION OR JUDICIALLY.

IN WITNESS  WHEREOF,  Guarantor,  on the day and year first written  above,  has
caused this Unconditional Guaranty to be executed under seal.

                                   Oak Tree Medical Systems, Inc.
                                   Taxpayer Identification Number: 02-0401674



CORPORATE                          By:______________________________
SEAL                                  Henry Dubbin, Vice Chairman




                                   By:______________________________
                                      Michael Gerber, President


                                      - 8 -

                                     MASTER



       -------------------------------------------------------------------




               HEALTH CARE RECEIVABLES LOAN AND SECURITY AGREEMENT

                         dated as of September 16, 1996

                                      among

                           OAK TREE RECEIVABLES, INC.,
                                  as Borrower,



                                SAM FUND I, L.P.,
                                   as Lender,



                                       and


                                  SAM PM, L.P.,
                              as Program Manager.






       -------------------------------------------------------------------

                              (Borrower Code OTRI)


<PAGE>


                                TABLE OF CONTENTS

<TABLE>
<CAPTION>
                                                                                                               Page

<S>                                                                                                               <C>
ARTICLE I  DEFINITIONS..........................................................................................  1

ARTICLE II  THE LOAN............................................................................................  1
         2.1  The Loan..........................................................................................  1
         2.3  Edited Face Value; Borrowing Base etc.  ..........................................................  1
         2.4  Borrower's Representations, Warranties and Covenants; Rejected Receivables........................  1
         2.5  Security Interest.................................................................................  2
         2.6  No Assumption of Obligations......................................................................  2

ARTICLE III PAYMENTS; FEES; INTEREST............................................................................  2
         3.1  Interest, etc.....................................................................................  2
         3.2  Fees..............................................................................................  2
         3.3  Application of Collections........................................................................  3
         3.4  Repayment.........................................................................................  3
         3.5  Prepayments.......................................................................................  3
         3.6  Payments, Set-Off, Computations, etc..............................................................  4
         3.7  Evidence of Debt..................................................................................  4
         3.8  Distributions to Borrower; Netting Arrangement....................................................  4

ARTICLE IV  CONDITIONS..........................................................................................  5
         4.1  Conditions Precedent to the First Loan............................................................  5
         4.2  Additional Conditions Precedent to the Loan.......................................................  5

ARTICLE V  SERVICING AND ADMINISTRATION.........................................................................  6
         5.1  Servicing of Receivables..........................................................................  6
         5.2  Receipt by Borrower...............................................................................  6
         5.3  Collateral Monitoring.............................................................................  7

ARTICLE VI  REMEDIES UPON TERMINATION...........................................................................  7
         6.1  Rights and Remedies...............................................................................  7
         6.2  Rights and Remedies Cumulative....................................................................  7

ARTICLE VII  PROGRAM MANAGER ...................................................................................  7
         7.1  Authorization and Action..........................................................................  7
         7.2  Rights of Program Manager.........................................................................  8

         7.3  Ethical Obligations of Program Manager............................................................  8
         8.1  Indemnity.........................................................................................  8
         8.2  Contribution......................................................................................  9
         8.3  Exculpation....................................................................................... 10

ARTICLE IX  MISCELLANEOUS....................................................................................... 10
         9.1  Amendments, Waivers, etc.......................................................................... 10

</TABLE>
                                       -i-

<PAGE>


<TABLE>
<CAPTION>
                                                                                                               Page

<S>                                                                                                              <C>
         9.2  Notices, etc...................................................................................... 10
         9.3  Binding Effect; Survival.......................................................................... 10
         9.4  Costs, Expenses and Taxes......................................................................... 11
         9.5  No Recourse Against Other Parties................................................................. 11
         9.6  No Proceedings.................................................................................... 11
         9.7  Execution in Counterparts......................................................................... 12
         9.8  Interpretation; Entire Agreement.................................................................. 12
         9.9  Governing Law..................................................................................... 12
         9.10  Consent To Jurisdiction; Waiver Of Immunities.................................................... 12
         9.11  Arbitration...................................................................................... 13
         9.12  Interest......................................................................................... 13
         9.13  No Oral Agreements............................................................................... 14
         9.14  Limited Recourse................................................................................. 14
</TABLE>


Schedule 1       Definitions
Schedule 2       Initial Conditions
Schedule 3       Representations and Warranties as to Borrower
Schedule 4       Representations and Warranties as to Eligible Receivables
Schedule 5       Borrower's Covenants
Schedule 6       Edited Face Value; Borrowing Base, etc.

Exhibit A        Form of Note
Exhibit B        Form of Obligor Notice
Exhibit C        Form of UCC Financing Statement
Exhibit D        Form of Letter Amending Borrowing Base Determination
Exhibit E        Form of Limited Power of Attorney
Exhibit F        Form of Borrowing Base Certificate


                                      -ii-

<PAGE>



         THIS HEALTH CARE  RECEIVABLES  LOAN AND SECURITY  AGREEMENT dated as of
September 16, 1996 (this  "Agreement")  is among OAK TREE  RECEIVABLES,  INC., a
Florida  corporation  ("Borrower"),  SAM FUND I, L.P. (including its successors,
assigns and designees, "Lender") and SAM PM, L.P., as program manager (including
its successors, assigns and designees, "Program Manager"). For good and valuable
consideration, the receipt and sufficiency of which are hereby acknowledged, the
parties hereto hereby agree as follows:

ARTICLE I  DEFINITIONS

         In this Agreement,  unless otherwise  specified:  (a) capitalized terms
are used as defined  in  Schedule  1; and (b) terms  defined in Article 9 of the
Texas UCC and not otherwise  defined herein are used as defined in such Article.
Additional rules of interpretation are set forth in Section 9.8.

ARTICLE II  THE LOAN

         SECTION  2.1 The Loan.  Lender  shall  make  available  to  Borrower  a
multiple  draw-down  term  loan  facility,  on  the  terms  and  subject  to the
conditions set forth in this Agreement (the "Commitment"). Lender agrees, on the
terms and subject to the conditions hereinafter set forth, to make a loan in one
or two draw-downs (collectively,  the "Loan") to Borrower during the period from
the date hereof to the date (the  "Commitment  Termination  Date")  which is the
earlier of

                  (a) September 18, 1996; and

                  (b) the date notice is given by Lender to Borrower pursuant to
         Section 6.1.

The amount of the Loan made may not exceed the lesser of (x) $1,250,000, as such
amount may be reduced pursuant to Section 3.3 (such amount, as so reduced, being
the  "Commitment  Amount")  and (y) the  Borrowing  Base.  Subject  to the terms
hereof,  Borrower  may borrow and prepay but may not reborrow  amounts  pursuant
hereto.

         SECTION 2.2 Making the Loan.  Lender will make the Loan on at least two
Business  Days' prior written notice (unless such period is waived by Lender and
Program Manager) from Borrower to Lender (a "Borrowing  Notice")  specifying the
proposed  amount and date (which must be a Business Day) of the Loan.  Not later
than 1:00 P.M. (Dallas time) on the date of the Loan and upon fulfillment of the
conditions  set  forth in  Article  IV,  the  proceeds  of the Loan will be made
available to Borrower in immediately  available  funds for deposit in Borrower's
Account.

         SECTION 2.3 Edited Face Value;  Borrowing Base etc. In connection  with
the Loan under this Agreement, Borrower shall communicate certain information to
Program  Manager (or a Person  designated by Program  Manager),  Program Manager
shall  cause  certain  estimates  to be made,  and  certain  procedures  will be
followed prior to or on the Loan Date, all in accordance with, and as more fully
described in, Schedule 6.

         SECTION  2.4  Borrower's  Representations,  Warranties  and  Covenants;
Rejected  Receivables.  On the  date of this  Agreement  and on the  Loan  Date,
Borrower shall be deemed to have represented and warranted to Lender and Program
Manager as set forth in Schedule 3. On each Loan Date,  Borrower shall be deemed
to have represented and warranted to Lender and Program Manager as set forth in


                                        1

<PAGE>


Schedule 4 as to each  Receivable  included  in the  Borrowing  Base  (each,  an
"Eligible  Receivable").  During  the  period  from the  date of this  Agreement
through the Final Payout Date, Borrower (for the benefit of all Persons referred
to in Section 9.3) shall comply with the covenants set forth in Schedule 5.

         Borrower shall notify Program Manager  promptly upon becoming aware of,
and if earlier,  Program  Manager shall notify  Borrower  promptly upon becoming
aware of, any breach of any of such  representations,  warranties  or covenants.
Any such notice shall  identify all  Receivables  affected by such breach.  Each
Receivable  affected by such breach is called a  "Rejected  Receivable".  On the
first  Business Day that a Receivable  becomes a Rejected  Receivable,  Borrower
shall remove the Rejected Receivable from the Borrowing Base and replace it with
an Eligible  Receivable  whose Edited Face Value is equal to or greater than the
Receivable that became a Rejected Receivable.

         SECTION  2.5  Security  Interest.  To secure  the  prompt  payment  and
performance of all  Obligations,  (a) Borrower hereby grants to Lender,  for the
benefit of Lender and the other Indemnified  Parties, a security interest in all
of Borrower's  right,  title and interest in, to and under all of the following,
whether  now or  hereafter  existing:  (i) all  Receivables,  (ii)  all  Records
relating to such Receivables,  (iii) all Contracts relating to such Receivables,
(iv) the Transaction Accounts, (v) the Lock- Boxes, all funds and other items on
deposit in the Transaction  Accounts and the Lock-Boxes,  and all  certificates,
agreements  and  instruments,   if  any,  from  time  to  time  evidencing  each
Transaction  Account,  each Lock-Box and all funds and other items on deposit in
each  Transaction  Account and each Lock-Box,  and (vi) all proceeds and amounts
received  or  receivable  (including  all  Collections)  under any or all of the
foregoing  (collectively,  the  "Collateral");  and  (b)  this  Agreement  shall
constitute a security agreement under the UCC.

         SECTION 2.6 No Assumption of  Obligations.  Neither this  Agreement nor
the Loan pursuant to this Agreement shall  constitute or result in an assumption
by Lender or any other  Indemnified  Party of any  obligations or liabilities of
Borrower with respect to any Receivable, Record or Contract.

ARTICLE III PAYMENTS; FEES; INTEREST

         SECTION 3.1 Interest, etc. Interest will accrue prior to default on the
unpaid  principal  amount of the Loan from the date such Loan is made until such
principal amount is paid in full (after, as well as before, judgment) at a fixed
interest rate per annum equal to 14%;  provided,  however,  that once the Lender
has received an aggregate of $662,500 in interest,  Facility Fees and Collection
and Servicing Fees, the fixed interest rate per annum shall thereafter equal 6%.
Payments of accrued  interest  will be made by  Borrower to Lender's  Account on
each Weekly Payment Date in immediately  available funds to the extent available
as  provided  in  Section  3.3.  On any  overdue  principal  amount of any Loan,
Borrower  will pay  interest  (after,  as well as before,  judgment)  payable on
demand,  at a fluctuating  interest rate per annum (the "Default Rate") equal to
16% per annum;  provided,  however, that once the interest rate has reduced from
14% to 6% as provided in the first  sentence of this  Section  3.1,  the Default
Rate shall be 6% per annum.

         SECTION 3.2 Fees. (a) Borrower agrees to pay to Lender a collection and
servicing fee (the "Collection and Servicing Fee") payable out of Collections in
the amount of $500,000 as provided in Section 3.3 for servicing  and  collecting
the Receivables.


                                        2

<PAGE>


         (b) The  Borrower  agrees  to pay to the  Lender  a  facility  fee (the
"Facility  Fee") in the amount of $92,500 as provided in Section 3.3;  provided,
however,  that the Facility Fee shall be deemed paid in full once the Lender has
received  interest,  Facility Fee and  Collection  and Servicing Fee equal to an
aggregate amount of $662,500.

         (c) the Borrower  agrees to pay to the Lender a fee (the "Success Fee")
in an amount  equal to 20% of the  amount  actually  collected  in excess of the
repayment of the principal  amount of the Loan plus interest  thereon,  plus the
Collection  and Servicing Fee actually  collected plus the Facility Fee actually
collected;  provided,  however, that the Success Fee shall be reduced dollar for
dollar by the amount of any interest actually paid by the Borrower under Section
3.1 after the fixed annual  interest  rate  decreases  from 14% to 6% per annum;
provided,  further,  that if for any  reason  the  Lender  has not  received  an
aggregate  amount of interest,  Facility Fee and  Collection  and  Servicing Fee
equal to $662,500 at the time that the Success Fee becomes due, then the Success
Fee shall be an amount equal to 100% of the amount actually collected thereafter
until the Lender has received an aggregate  amount of  interest,  Facility  Fee,
Collection and Servicing Fee and Success Fee equal to $662,500.

         SECTION 3.3 Application of Collections.  Collections  received from the
Receivables set forth on the  Receivables  Lists shall be applied by the Program
Manager on each Weekly Payment Date in the following order of priority:

         first, to the payment of accrued and unpaid interest on the Loan;

         second,  to the payment of the  Collection  and Servicing Fee until the
Collection and Servicing Fee has been paid in full;

         third,  to the payment of the  Facility  Fee until the Facility Fee has
been paid in full;

         fourth, to the payment of principal on the Loan until the Loan has been
paid in full;

         fifth, to the payment of the Success Fee until the Success Fee has been
paid in full;

         sixth, to the payment of all other unpaid Obligations; and

         seventh,  after all the  Obligations  have  been  paid in full,  to the
Borrower's Account.

         SECTION  3.4  Repayment.  On the  Maturity  Date,  the  then  aggregate
outstanding principal amount of the Loan will be due and payable in full.

         SECTION 3.5 Prepayments.  Borrower may, upon at least 60 Business Days'
notice to Lender,  prepay the outstanding principal amount of the Loan, in whole
or in part, on any Business Day, in each case with accrued  interest to the date
of such prepayment on the principal amount prepaid; provided, however, that each
partial  prepayment  shall be in a principal amount not less than $50,000 and in
an integral multiple of $50,000 and provided,  further, that the Loan may not be
prepaid  until the Facility Fee and the  Collection  and Servicing Fee have been
paid in full. If at any time the aggregate  outstanding  principal amount of the
Loan exceeds the lesser of (x) the Commitment Amount and (y) the Borrowing Base,
Borrower will  immediately make a prepayment in an amount at least equal to such
excess. All Collections shall be applied in accordance with Section 3.3.


                                        3

<PAGE>


         SECTION 3.6 Payments, Set-Off, Computations, etc. Any term or provision
of this  Agreement to the contrary  notwithstanding,  Borrower and Lender hereby
agree as follows:

                 (a) Payments due  hereunder or under any  Transaction  Document
         delivered must be made by Borrower (in immediately available funds) not
         later than 11:00 A.M. (Dallas time) on the day when due in lawful money
         of the United States for deposit to Lender's Account. Each such payment
         must be made by Borrower free and clear of (and without  deduction for)
         any and all  present and future  taxes,  levies,  imposts,  deductions,
         charges,   withholdings  and  all  liabilities  with  respect  thereto,
         excluding  income and  franchise  taxes of the United States and of the
         State of Texas and any political subdivision of either thereof.

                 (b)  Borrower  hereby  authorize  Lender,  if and to the extent
         payment is not made when due  hereunder or under any other  Transaction
         Document, to charge from time to time against Borrower's Account or any
         or all of Borrower's accounts with Lender any amount so due.

                 (c) All  computations  of interest and of the fees described in
         this  Agreement will be made by Lender on the basis of a year of 365 or
         366 days, as the case may be, for the actual number of days  (including
         the first day but excluding  the last day)  occurring in the period for
         which such interest is or fees are payable.  Each computation by Lender
         of interest or fees  hereunder  will be conclusive  and binding for all
         purposes, absent manifest error.

                 (d) Whenever any payment to be made hereunder or under the Note
         or any other instrument  delivered hereunder shall be stated to be due,
         on a day other than a Business  Day, such payment shall be made, on the
         next succeeding  Business Day, and such extension of time will, in such
         case, be included in the computation of payment of interest or fees, as
         the case may be.

         SECTION  3.7  Evidence  of  Debt.  Borrower's  indebtedness  to  Lender
resulting from the Loan made  hereunder  will be evidenced by a promissory  note
(the "Note"),  in substantially the form attached hereto as Exhibit A, delivered
to Lender pursuant to Section 4.1. Borrower hereby irrevocably authorizes Lender
to make (or cause to be made) appropriate  notations on the grid attached to the
Note (or on a  continuation  of such grid  attached  to the Note and made a part
thereof),  which notations, if made, will evidence, inter alia, the date of, the
outstanding  principal  of,  and the  interest  rate  applicable  to,  the  Loan
evidenced  thereby.  Failure to record any notation on such grid (or on any such
continuation),  or any error with respect thereto,  will not, however,  limit or
otherwise  affect  Borrower's  obligations  hereunder  or under the Note to make
payments of  principal  of or  interest  on the Loan when due.  Lender will also
maintain (in  accordance  with Lender's  usual  practice) an account or accounts
evidencing  Borrower's  indebtedness to Lender  resulting from the Loan made and
the amounts of  principal,  interest and fees payable and paid from time to time
hereunder.  In any  arbitration,  legal action or  proceeding in respect of this
Agreement,  the entries  made in such  account or  accounts  will be prima facie
evidence  of the  existence  and  amounts of  Borrower's  obligations  to Lender
therein recorded.

         SECTION   3.8   Distributions   to   Borrower;   Netting   Arrangement.
Notwithstanding  any other provision of this  Agreement,  all amounts payable or
distributable  to  Borrower   pursuant  to  this  Agreement  shall  be  paid  or
distributed  net of any amounts  payable by  Borrower to any Person  pursuant to
this Agreement,  and the amounts  deducted in determining such net amounts shall
be deemed to have been paid or distributed to Borrower and then paid by Borrower
to the actual recipient of such amounts. In


                                        4

<PAGE>



addition,  at any time when an Event of Default has occurred  and is  continuing
(or,  if a  Bankruptcy  Event  with  respect to  Borrower  has  occurred  and is
continuing,  without  giving  effect to any  grace  period  contemplated  by the
definition of Bankruptcy  Event), all amounts otherwise payable or distributable
to Borrower  pursuant to this  Agreement  shall  instead be  deposited in a cash
collateral  account  (the  "Cash  Collateral  Account")  in the  name of  Lender
maintained at a bank to be designated by Program  Manager and held as collateral
for the payment and  performance  of Borrower's  Obligations to which such funds
shall be applied from time to time at Program  Manager's  discretion.  Any funds
remaining in the Cash  Collateral  Account at the close of business on the Final
Payout Date shall be distributed to Borrower on the first Business Day following
the Final Payout Date.

ARTICLE IV  CONDITIONS

         SECTION 4.1  Conditions  Precedent  to the First  Loan.  The first Loan
hereunder shall be subject to the condition precedent that Program Manager shall
have  received,  on or before the date of the first  Loan,  the items  listed in
Schedule 2, each (unless otherwise  indicated) dated such date or another recent
date acceptable to Program  Manager and each in form and substance  satisfactory
to Program  Manager,  and the other actions listed in Schedule 2 shall have been
completed.


         SECTION 4.2 Additional Conditions Precedent to the Loan. The Loan shall
be subject to the further conditions precedent that:

                 (a) the representations and warranties contained in Schedules 3
and 4 are  correct  in all  material  respects  on and as of each of the Date of
Service and the Loan Date as though  made on and as of each such day;  provided,
however,  that this condition  shall be deemed to be satisfied even if there has
been  a  breach  of a  representation  and  warranty  if  the  related  Rejected
Receivable  shall have been deleted  from the  Borrowing  Base  pursuant to this
Agreement and replaced as required by Section 2.4;

                 (b) the Maturity Date shall not have occurred,  and no Event of
Default, or event that with notice, the passage of time or both would constitute
an Event of Default  shall have  occurred and be continuing on the Loan Date, or
would result from such Loan;

                 (c)  Program  Manager  shall have  received  from  Borrower  an
Obligor  Notice,  signed by  Borrower,  with  respect  to each  Obligor  of each
Receivable  (and  Program  Manager  shall have  mailed  such  Obligor  Notice by
certified mail, return receipt  requested,  to the Obligor named in such Obligor
Notice),  provided,  however,  that an Obligor  Notice need not be mailed to the
applicable  Obligor other than at the time of the first purchase of a Receivable
that is owed by such Obligor; provided, further, that with respect to Government
Obligors, Borrower shall cause each Seller to open a new Government Lock-Box and
Government Lock-Box Account at a bank that is acceptable to Program Manager, and
the Obligor  Notice sent to  Government  Obligors  of such Seller  shall  direct
payment to such Government Lock-Box or Government Lock-Box Account.

                 (d) Program  Manager  shall have  received a duly  executed and
completed Borrowing Notice from Borrower;

                 (e) each of Support Servicer (or a Person designated by it) and
Program  Manager (or a Person  designated by it) shall have timely  received the
related Receivables Information, and all other


                                        5

<PAGE>



actions or  procedures  outlined in Schedule 6 have  occurred  by, or will occur
concurrently with, the Loan Date;

                 (f) Program  Manager (or a Person  designated by it) shall have
received true and complete copies of all of Borrower's  Medical Records relating
to each Receivable included in the Borrowing Base on such Loan Date;

                 (g) Program Manager shall have received completed copies of all
of the Borrower's patient consents (including face sheets, assignment of benefit
forms, and authorizations to release Medical Records),  signed by the applicable
patient for each Receivable included in the Borrowing Base on such Loan Date;

                 (h) Program  Manager (or a Person  designated by it) shall have
received one or more financing  statements  signed by Borrower and Lender in the
form of  Exhibit  C, or  other,  similar  instruments  or  documents,  as may be
necessary or, in the opinion of Program Manager,  desirable under the UCC or any
comparable law of all appropriate jurisdictions to perfect Lender's interests in
the Receivables; and

                 (i) Program  Manager shall have received such other  approvals,
opinions and documents as it may reasonably request.

                 (j) Program  Manager  shall have  received a  certificate  from
Support Servicer stating that all computer linkups and interfaces, and any other
electronic  interfaces,  necessary  or  desirable  in the  judgment  of  Support
Servicer to effectuate the transactions and information  transfers  contemplated
under the Transaction Documents are fully operational to the satisfaction of the
Support Servicer (collectively, the "Data Interface").

By  accepting  the  Loan,  Borrower  shall be  deemed  to have  represented  and
warranted to Lender and Program Manager as to the matters set out in clauses (a)
and (b) of this Section 4.2. Lender's making of a Loan shall not be construed as
a determination  by Lender or Program Manager that Borrower has satisfied any or
all of the conditions or requirements of Section 4.1 or this Section 4.2.

ARTICLE V  SERVICING AND ADMINISTRATION

         SECTION 5.1 Servicing of Receivables. From and after the Loan Date, the
servicing,  administration  and collection of Borrower's  Receivables  purchased
from Coast and/or Riverside shall be conducted exclusively by Program Manager or
any Person  designated by Program  Manager from time to time, as provided in the
collection and servicing agreement by and between Borrower,  the Program Manager
and Claims  Management  Company of America,  L.P. (the "Collection and Servicing
Agreement"); provided, that once all amounts due hereunder to Lender (other than
the Success Fee) are paid in full, such obligations shall revert to Borrower.

         SECTION 5.2 Receipt by Borrower. If Borrower shall receive any payments
from or on  behalf  of an  Obligor  (whether  in the  form  of  cash,  check  or
otherwise)  with  respect  to a  Receivable,  or  any  information  as  to  such
Receivable related to such payments,  or any related EOBs, from an Obligor, then
Borrower shall, (i) immediately  segregate such payments separate and apart from
Borrower's  funds and hold such  payments in trust for Lender and (ii) not later
than the first Business Day immediately


                                        6

<PAGE>


following the day on which  Borrower  receives such payments or  information  or
related EOBs, (x) notify Program  Manager of its receipt of all such payments or
information  or related EOBs, (y) cause to be delivered to Program  Manager,  by
same day delivery or Federal Express for next day delivery, if same day delivery
is not practicable, such payments if needed to pay the Loan in the form received
by  Borrower  and (z) cause to be  delivered  to  Program  Manager,  by same day
delivery or Federal  Express for next day delivery,  if same day delivery is not
practicable, information as to the Receivables as to which such payments related
and  copies of any  related  EOBs.  Borrower  agrees  that,  if it shall fail to
deliver to Program  Manager any such  payments  received by Borrower  within the
time  provided in this Section 5.2, an Event of Default  shall be deemed to have
occurred. Borrower agrees that any Records and EOBs held by Borrower relating to
Receivables  shall be made  available  to Lender for its  inspection  or copying
subject to  applicable  patient  confidentiality  requirements  with  respect to
Medical Records.

         SECTION  5.3  Collateral  Monitoring.  Program  Manager  or any  Person
designated  by Program  Manager shall have a daily right to monitor the incoming
mail of the Borrower and its Affiliates and Collateral  (including the Borrowing
Base).  In this regard,  such Person shall have access  during  normal  business
hours to all books and  records of Borrower  and to ensure  that  Borrower is in
compliance with its obligations pursuant to Section 5.2.

ARTICLE VI  REMEDIES UPON TERMINATION

         SECTION 6.1 Rights and Remedies.  Upon the occurrence and  continuation
of an Event of Default,  the Lender  shall have the right (a) to  terminate  its
Commitment to lend, whereupon the same will forthwith terminate, (b) declare the
Loan and all  indebtedness  evidenced by the Note, all interest  thereon and all
other amounts payable under this Agreement or any other Transaction  Document to
be  immediately  due and payable,  whereupon the Maturity Date will be deemed to
have occurred and the Loan and all indebtedness  evidenced by the Note, all such
interest and all such amounts will become and be forthwith due and payable,  all
without presentment, demand, protest or further notice of any kind, all of which
are hereby expressly waived by Borrower. On and after the Maturity Date, Program
Manager and Lender shall have, in addition to all rights and remedies  under the
Transaction  Documents,  all rights and remedies  provided under each applicable
UCC and other applicable laws (including as to rights covered by Section 2.5).

         SECTION 6.2 Rights and Remedies Cumulative.  The rights and remedies of
Lender and Program Manager under this Agreement are cumulative,  and such rights
and remedies are in addition to and not by way of limitation of any other rights
or remedies Lender or Program  Manager may have under  applicable law. Lender or
Program  Manager,  as the  case  may be,  shall  have  the  right,  in its  sole
discretion,  to determine  which of its respective  rights and remedies,  and in
which order any of the same,  are to be exercised.  No act,  failure or delay by
Lender or Program Manager,  as the case may be, shall constitute a waiver of any
of its rights and remedies.

ARTICLE VII  PROGRAM MANAGER

         SECTION 7.1 Authorization and Action.  Pursuant to certain  agreements,
Lender has appointed and authorized  Program  Manager (or its designees) to take
such  action as agent on its  behalf  and to  exercise  such  powers  under this
Agreement as are delegated to Program Manager by the terms hereof, together with
such powers as are reasonably  incidental  thereto.  Borrower hereby agrees that
Program


                                        7

<PAGE>


Manager (or its  designee)  shall have the right to enforce all rights of Lender
and all  obligations  of  Borrower  under  this  Agreement  for and on behalf of
Lender.

         SECTION 7.2 Rights of Program Manager. (a) If Borrower fails to perform
any of its agreements or obligations  under this  Agreement,  Program Manager or
its  designee  may (but  shall not be  required  to)  itself  perform,  or cause
performance  of,  such  agreement  or  obligation,  and the  expenses of Program
Manager or its designee  incurred in  connection  therewith  shall be payable by
Borrower as provided in Article VIII.

         (b) After the  occurrence and  continuation  of an Event of Default and
until all Obligations of Borrower are paid in full,  Borrower hereby  authorizes
Program  Manager  (or its  designee),  and  grants to Program  Manager  (or such
designee) a power of attorney,  with full power of substitution and coupled with
an interest, to take in Borrower's name, as applicable or necessary, any and all
steps as are necessary or advisable, in the determination of Program Manager, in
order to effectuate and perform any and all of the transactions  contemplated by
this  Agreement.  Without  limiting the foregoing,  Borrower  hereby  authorizes
Program Manager  subject,  in each case, to the provisions of applicable law, to
(i) issue notices to,  prepare,  file and submit proof of claim forms with,  and
otherwise communicate with, Obligors in the name of Borrower,  (ii) ask, demand,
collect, sue for, recover,  receive and give acquittance and receipts for moneys
due and to become  due with  respect to  Receivables,  (iii)  receive,  endorse,
negotiate, transfer, deposit, collect and otherwise deal with any drafts, checks
or other  instruments  and documents  with respect to Receivables as the secured
party  with  respect  thereto,  (iv)  prepare,  sign,  apply for,  and file,  in
Borrower's   name,  any  document   (including   UCC  financing   statements  or
continuation  statements)  to establish  Lender as secured party or otherwise as
lien holder with respect to such  Receivables and other items covered by Section
2.5, (v) open and establish  bank  accounts with Program  Manager (and any other
Person  designated  by Program  Manager) as the only signers on the accounts and
the sole beneficiaries of these accounts for purposes of collecting  Receivables
(other  than  from  Government  Obligors),   (vi)  negotiate,   settle,  adjust,
compromise, extend or renew, discharge and release any or all Receivables, (vii)
prepare, sign and file any claims in Borrower's name with an Obligor or take any
other  action or  institute  any  proceedings  which  Program  Manager  may deem
necessary or desirable for the collection of any of the Receivables or otherwise
to enforce  the rights of Lender  with  respect  to any of the  Receivables  and
(viii) do all other things  necessary or proper to carry out the  administration
and  servicing  of the  Receivables.  This  limited  power of attorney  shall be
irrevocable  until the Final  Payout  Date.  This  limited  power of attorney is
transferable and assignable by Program Manager, at its sole discretion.

         SECTION 7.3 Ethical Obligations of Program Manager. The Program Manager
shall perform its obligations hereunder in accordance with the ethical standards
of  the  healthcare  receivables  servicing  industry  and  in  compliance  with
applicable law. The parties hereto agree that the immediately preceding sentence
shall not prevent  Program  Manager from taking any action  contemplated by this
Agreement.

ARTICLE VIII  INDEMNITY; EXCULPATION

         SECTION 8.1 Indemnity. Without limiting any other rights which any such
Person may have hereunder or under applicable law, Borrower  indemnifies each of
Program Manager, Support Servicer,  Lender, each of their respective Affiliates,
and all successors,  transferees,  participants  and assigns,  and all officers,
directors, shareholders, controlling persons, employees and agents of any of the
foregoing (each an "Indemnified  Party"),  forthwith on demand, from and against
any and all  Indemnified  Amounts  awarded  against or  incurred  by any of them
arising out of or relating to any Contract or any Transaction


                                        8

<PAGE>



Document,  or the making of any Loan.  Without limiting the foregoing,  Borrower
shall indemnify each Indemnified Party for Indemnified Amounts arising out of or
relating to:

                 (a)  the  failure  of any  of  Borrower's  representations  and
warranties to be true and correct in all respects when made or deemed made;

                 (b) any  failure of  Borrower  to perform  any of its duties or
obligations  hereunder,  including  any  failure by  Borrower to comply with any
applicable law, rule or regulation with respect to any Receivable or the related
Contract;  or the  nonconformity  of any Receivable or the related Contract with
any such applicable law, rule or regulation;

                 (c) any claim  resulting from the sale of the goods or services
related to any  Receivable or the furnishing or failure to furnish such goods or
services;  or any products  liability claim arising out of or in connection with
goods or services that are the subject of any Receivable;

                 (d) any Tax (but not  including  Taxes upon or  measured by net
income),  all interest and penalties  thereon or with respect  thereto,  and all
out-of-pocket costs and expenses,  including the reasonable fees and expenses of
counsel  in  defending  against  the  same,  which  may  arise by  reason of the
acquisition of any Receivable, or any other interest in the Receivables;

                 (e) any  commingling of  Collections of Receivables  with other
funds; and

                 (f) any investigation, litigation or proceeding related to this
Agreement or the use of proceeds of the Loan or in respect of any  Receivable or
Contract  or any  other  investigation,  litigation  or  proceeding  in which an
Indemnified  Party  becomes  involved  as a  result  of any of the  transactions
contemplated hereby.

The foregoing indemnities shall extend to each Indemnified Party notwithstanding
the sole or concurrent negligence of every kind of character whatsoever, whether
active or passive,  whether an  affirmative  act or an omission,  including  all
types of negligent  conduct  identified in the Restatement  (Second) of Torts of
one or more of the  Persons  so  indemnified  or by reason  of strict  liability
imposed without fault on any one or more of such Persons.  To the extent that an
arbitrator chosen in accordance with Section 9.11 shall have determined that any
Indemnified  Party committed an act of gross negligence,  or wilful  misconduct,
this  contractual  obligation of  indemnification  shall continue but shall only
extend to the portion of the claim that is deemed to have  occurred by reason of
events other than the gross negligence or wilful  misconduct of such Indemnified
Party.

         SECTION  8.2  Contribution.  If  for  any  reason  the  indemnification
provided  in  Section  8.1  is  unavailable  to  an  Indemnified   Party  or  is
insufficient  to  hold  an  Indemnified  Party  harmless,  then  Borrower  shall
contribute  to the payment of the  Indemnified  Amount in such  proportion as is
appropriate  to  reflect  not  only  the  relative  benefits  received  by  such
Indemnified  Party on the one hand and  Borrower  on the other hand but also the
relative fault of such Indemnified Party as well as any other relevant equitable
considerations.


                                        9

<PAGE>


         SECTION 8.3 Exculpation.  Notwithstanding  anything contained herein to
the  contrary,  no  Indemnified  Party  shall be liable to Borrower or any other
Person for  Indemnified  Amounts  awarded  against or incurred by Borrower,  its
Affiliates, and all successors,  transferees,  participants and assigns, and all
officers, directors, shareholders,  controlling persons, employees and agents of
any of the foregoing  (each a "Borrower  Party"),  arising out of or relating to
the Transaction Documents,  the funding of any Loan, except for its or their own
gross  negligence or willful  misconduct in performing or failing to perform its
or their own obligations hereunder or thereunder.  In no event,  however,  shall
the Indemnified  Parties be liable: (a) for Indemnified  Amounts awarded against
or incurred by any Borrower Party arising out of or relating to the  Transaction
Documents,  existing at the time the first of such Indemnified Amounts arose; or
(b) for any indirect,  special,  punitive,  exemplary or  consequential  damages
arising  out  of  or  relating  to  the  Transaction  Documents.  THE  FOREGOING
EXCULPATION SHALL EXTEND TO EACH INDEMNIFIED PARTY  NOTWITHSTANDING  THE SOLE OR
CONCURRENT NEGLIGENCE OF EVERY KIND OR CHARACTER  WHATSOEVER,  WHETHER ACTIVE OR
PASSIVE,  WHETHER AN  AFFIRMATIVE  ACT OR AN  OMISSION,  INCLUDING  ALL TYPES OF
NEGLIGENT CONDUCT IDENTIFIED IN THE RESTATEMENT (SECOND) OF TORTS OF ONE OR MORE
OF THE PERSONS SO EXCULPATED OR BY REASON OF STRICT  LIABILITY  IMPOSED  WITHOUT
FAULT  ON ANY ONE OR MORE OF SUCH  PERSONS.  To the  extent  that an  arbitrator
chosen  in  accordance   with  Section  9.11  shall  have  determined  that  any
Indemnified  Party  committed an act of gross  negligence or wilful  misconduct,
this contractual exculpation shall continue but shall only extend to the portion
of the claim that is deemed to have  occurred by reason of events other than the
gross negligence or wilful misconduct of such Indemnified Party.

ARTICLE IX  MISCELLANEOUS

         SECTION 9.1  Amendments,  Waivers,  etc. No amendment of this Agreement
shall be effective  unless the same shall be in writing and signed by all of the
parties  hereto.  No waiver of any provision of this Agreement or consent to any
departure by Borrower  therefrom shall be effective  without the written consent
of Program  Manager and Lender.  Any such waiver or consent  shall be  effective
only in the  specific  instance  given.  No  failure or delay on the part of any
Indemnified Party to exercise,  and no delay in exercising,  any right hereunder
shall operate as a waiver thereof;  nor shall any single or partial  exercise of
any right  hereunder  preclude  any other or  further  exercise  thereof  or the
exercise of any other right.

         SECTION 9.2 Notices, etc. All notices and other communications provided
for under this Agreement shall,  unless  otherwise stated herein,  be in writing
(including facsimile communication) and shall be personally delivered or sent by
express mail or courier or by certified mail, postage prepaid,  or by facsimile,
to the intended party at the address or facsimile number of such party set forth
under  its name on the  signature  pages  hereof  or at such  other  address  or
facsimile number as shall be designated by such party in a written notice to the
other parties hereto.  All such notices and  communications  shall be effective,
(a) if  personally  delivered  or sent by express  mail or courier or if sent by
certified mail, when received,  and (b) if transmitted by facsimile,  when sent,
receipt  confirmed by telephone or electronic means.  Notwithstanding  any other
provision of this Agreement, notices and communications to Program Manager shall
be effective only when received.

         SECTION 9.3 Binding Effect;  Survival.  This Agreement shall be binding
upon and inure to the benefit of  Borrower,  Program  Manager,  Lender and their
respective  successors  and assigns,  and the  provisions  of Article VIII shall
inure to the benefit of the Indemnified Parties, respectively, and their


                                       10

<PAGE>


respective successors and assigns;  provided that the rights of sale, pledge and
transfer of the parties hereto are as follows:

                 (a) Borrower shall not sell,  pledge or otherwise  transfer its
rights,  or delegate its duties,  hereunder or any interest  herein  without the
prior written consent of Program Manager.

                 (b) Each of Lender  and  Program  Manager  may sell,  pledge or
otherwise  transfer  all or any part of  Lender's  or Program  Manager's  right,
title,  interest or  obligations  in, to and under this  Agreement,  each of the
other Transaction  Documents and the Loan. Borrower shall execute and deliver to
Lender or Program  Manager,  as the case may be, all documents,  instruments and
amendments  presented to Borrower by Lender or Program Manager,  as the case may
be,  in order to  effectuate  such  loan,  pledge  or  transfer  so long as such
documents,  instruments and amendments are not inconsistent with the Transaction
Documents.  The benefits of the  representations,  warranties,  indemnities  and
covenants  of Borrower  made or deemed made under this  Agreement  and the other
Transaction  Documents  are  for the  benefit  of and  may be  enforced  against
Borrower by any Person to which Lender or Program  Manager,  as the case may be,
sells,  pledges or  otherwise  transfers  any of its right,  title,  interest or
obligations in, to or under this Agreement,  any other Transaction Document from
time to time,  including  Persons providing funding to Lender or Program Manager
(regardless  of whether any such Person other than Lender or Program  Manager is
referred to in any provision of this Agreement).  After any such sale, pledge or
other  transfer,  all rights of Program  Manager  under  this  Agreement  may be
exercised by such Person as the buyer, pledgee or transferee may designate.  Any
such sale,  pledge or other  transfer shall be upon such terms and conditions as
Lender or Program Manager, as the case may be, and its counterparty may mutually
agree,  and  may  be  evidenced  by  such  instruments  or  documents  as may be
satisfactory to Lender, Program Manager and such counterparty.

         The rights and remedies  with  respect to any breach of  representation
and  warranty  made by Borrower and the  provisions  of Articles VI and VIII and
Sections 2.5, 2.6, 3.6, 5.2, 7.2, 9.3, 9.4, 9.5, 9.6, 9.9,  9.10,  9.11 and 9.12
shall be continuing  and shall survive any  termination  of this Agreement or of
any party's rights or obligations hereunder.

         SECTION 9.4 Costs,  Expenses and Taxes.  In addition to its obligations
under Article  VIII,  Borrower  agrees to pay on demand:  all costs and expenses
incurred by Program  Manager,  Support  Servicer and Lender and their respective
Affiliates in connection with any amendment of or consent or waiver under any of
the Transaction Documents which is requested or proposed by Borrower (whether or
not consummated), or the enforcement of, or any actual or claimed breach of, any
Transaction  Document,  including the reasonable fees and expenses of counsel to
any of such  Persons  incurred in  connection  with any of the  foregoing  or in
advising such Persons as to their  respective  rights and remedies  under any of
the Transaction Documents in connection with any of the foregoing.

         SECTION 9.5 No Recourse  Against Other  Parties.  No recourse under any
obligation, covenant or agreement of Lender contained in this Agreement shall be
had against any employee,  officer or director of Lender; provided that, subject
to Section 8.3,  nothing in this Section 9.5 shall  relieve any of the foregoing
Persons  from any  liability  which  such  Person  may  otherwise  have for such
Person's gross  negligence or willful  misconduct as determined by an arbitrator
(in accordance with Section 9.11).

         SECTION 9.6 No Proceedings.  Borrower agrees that it will not institute
against  Lender,  or join any other Person in instituting  against  Lender,  any
proceeding of the type referred to in the definition of


                                       11

<PAGE>


Bankruptcy  Event.  The foregoing shall not limit  Borrower's  right to file any
claim in or otherwise take any action with respect to any such  proceeding  that
was instituted by any Person other than Borrower.

         SECTION 9.7 Execution in  Counterparts.  This Agreement may be executed
in any  number  of  counterparts  and  by  the  different  parties  in  separate
counterparts,  each of which when so executed  shall be deemed to be an original
and all of  which  when  taken  together  shall  constitute  one  and  the  same
Agreement.

         SECTION  9.8  Interpretation;   Entire  Agreement.  In  this  Agreement
(including  the Schedules  and Exhibits  hereto),  unless the context  otherwise
requires:  (a)  references to any Person  includes such Person's  successors and
assigns but, if applicable, only if such successors and assigns are permitted by
this  Agreement;  (b)  references to any Article,  Section,  Exhibit or Schedule
refer to such Article or Section of, or Exhibit or Schedule to, this  Agreement,
and references in any Article, Section or definition to any subsection or clause
refer to such subsection or clause of such Article,  Section or definition;  (c)
"herein",  "hereof",  "hereto",  "hereunder"  and  similar  terms  refer to this
Agreement as a whole and not to any particular  Section,  paragraph or provision
of this Agreement; (d) "including" means including without limitation, and other
forms of the verb "to include" have correlative  meanings;  (e) the word "or" is
not exclusive;  (f) for purposes of calculating any amount accrued over a period
of  time,  the  first  day of such  period  shall be  included  and the last day
excluded;  (g)  references  to any  law  or  regulation  refer  to  such  law or
regulation as amended from time to time,  including any successor or replacement
law or  regulation;  (h) captions are solely for  convenience  of reference  and
shall not  affect the  meaning of this  Agreement;  (i) the term  "goods"  shall
include medical  equipment;  and (j) the singular number includes the plural and
vice versa.  Any provision of this Agreement or any other  Transaction  Document
which is prohibited or  unenforceable  under  applicable  law shall,  as to such
provision,  be ineffective to the extent of such prohibition or unenforceability
without  invalidating  the remaining  provisions of this Agreement or such other
Transaction  Document.  This  Agreement,  together  with the  other  Transaction
Documents,  constitutes the entire understanding and agreement among the parties
hereto as to the subject  matter hereof and supersedes all prior oral or written
understandings or agreements.

         SECTION  9.9  Governing  Law.  THIS  AGREEMENT  SHALL BE DEEMED TO BE A
CONTRACT MADE UNDER AND GOVERNED BY THE INTERNAL LAWS OF THE STATE OF TEXAS. THE
PARTIES  HERETO  FURTHER  AGREE THAT INSOFAR AS THE  PROVISIONS OF ARTICLE 1.04,
SUBTITLE 1, TITLE 79, OF THE REVISED CIVIL STATUTES OF TEXAS,  1925, AS AMENDED,
ARE EVER DEEMED  APPLICABLE TO THE DETERMINATION OF THE HIGHEST LAWFUL RATE WITH
RESPECT TO THIS AGREEMENT, THE INDICATED RATE CEILING COMPUTED FROM TIME TO TIME
PURSUANT TO SUCH ARTICLE  SHALL APPLY  HERETO;  PROVIDED,  HOWEVER,  THAT TO THE
EXTENT  PERMITTED BY SUCH  ARTICLE,  LENDER OR PROGRAM  MANAGER MAY FROM TIME TO
TIME BY NOTICE FROM LENDER OR PROGRAM MANAGER TO BORROWER REVISE THE ELECTION OF
SUCH  INTEREST  RATE CEILING AS SUCH CEILING  AFFECTS THE THEN CURRENT OR FUTURE
BALANCES OF THE NOTE OR ANY OTHER  INSTRUMENT  EXECUTED IN CONNECTION  WITH THIS
AGREEMENT.  THE  PROVISIONS  OF CHAPTER 15 OF SUBTITLE 3 OF THE SAID TITLE 79 DO
NOT APPLY TO THIS AGREEMENT OR ANY INSTRUMENT IN CONNECTION WITH THIS AGREEMENT.

         SECTION 9.10 Consent To Jurisdiction;  Waiver Of Immunities. SUBJECT TO
SECTION 9.11, EACH PARTY TO THIS AGREEMENT IRREVOCABLY (a) SUBMITS TO THE


                                       12

<PAGE>


JURISDICTION,  FIRST, OF ANY UNITED STATES FEDERAL COURT, AND SECOND, IF FEDERAL
JURISDICTION IS NOT AVAILABLE,  OF ANY TEXAS STATE COURT, IN EITHER CASE SITTING
IN DALLAS,  TEXAS IN ANY ACTION OR PROCEEDING ARISING OUT OF OR RELATING TO THIS
AGREEMENT,  (b) WAIVES,  TO THE  FULLEST  EXTENT IT MAY  EFFECTIVELY  DO SO, THE
DEFENSE  OF  AN  INCONVENIENT  FORUM  TO  THE  MAINTENANCE  OF  SUCH  ACTION  OR
PROCEEDING,  (c) WAIVES  PERSONAL  SERVICE OF ANY  PROCESS  AND  CONSENTS TO THE
SERVICE  OF ANY AND ALL  PROCESS  BY THE  MAILING  OF COPIES OF SUCH  PROCESS BY
CERTIFIED MAIL TO ITS ADDRESS  CONTEMPLATED BY SECTION 9.2 AND (d) TO THE EXTENT
THAT IT HAS OR  HEREAFTER  MAY  ACQUIRE  THE SAME,  WAIVES,  IN  RESPECT  OF ITS
OBLIGATIONS  UNDER OR IN  CONNECTION  WITH THIS  AGREEMENT ANY IMMUNITY FROM THE
JURISDICTION OF ANY COURT OR FROM ANY LEGAL PROCESS  (WHETHER THROUGH SERVICE OR
NOTICE, ATTACHMENT PRIOR TO JUDGMENT, ATTACHMENT IN AID TO EXECUTION,  EXECUTION
OR OTHERWISE) AS TO ITSELF OR ITS PROPERTY.

         SECTION 9.11  Arbitration.  ANY  CONTROVERSY OR CLAIM ARISING OUT OF OR
RELATING TO THIS  AGREEMENT OR THE BREACH HEREOF SHALL BE SETTLED BY ARBITRATION
TO BE HELD AT A PLACE  DESIGNATED BY PROGRAM MANAGER IN DALLAS,  TEXAS. A SINGLE
ARBITRATOR  MUTUALLY  AGREED TO BY THE PARTIES  HERETO  SHALL ACT AS  ARBITRATOR
PROVIDED  THAT,  IF THE  PARTIES  CANNOT  AGREE ON AN  ARBITRATOR,  SUCH  SINGLE
ARBITRATOR  SHALL BE  SELECTED  IN  ACCORDANCE  WITH THE  RULES OF THE  AMERICAN
ARBITRATION  ASSOCIATION.  THE ARBITRATION SHALL BE CONDUCTED IN ACCORDANCE WITH
THE RULES OF THE AMERICAN ARBITRATION ASSOCIATION EXCEPT (a) WITH RESPECT TO THE
SELECTION OF THE ARBITRATOR  WHICH SHALL BE AS PROVIDED IN THIS SECTION 9.11 AND
(b) THAT THE  ARBITRATOR  SHALL  DESIGNATE A "LOSING  PARTY",  AND THE COSTS AND
EXPENSES OF THE ARBITRATOR  SHALL BE BORNE BY SUCH LOSING PARTY.  THIS AGREEMENT
SHALL BE SPECIFICALLY  ENFORCEABLE  UNDER THE PREVAILING  ARBITRATION  LAWS, AND
JUDGMENT  UPON THE AWARD  RENDERED BY THE  ARBITRATOR  MAY BE ENTERED AS A FINAL
JUDGMENT IN ANY COURT IN TEXAS OR  ELSEWHERE  IN ANY COURT  HAVING  JURISDICTION
THEREOF.  THE PARTIES  HERETO  AGREE TO  CONTINUE  PERFORMING  THEIR  RESPECTIVE
OBLIGATIONS UNDER THIS AGREEMENT UNTIL THE ARBITRATION HAS CONCLUDED.

         SECTION  9.12  Interest.  Anything in this  Agreement  to the  contrary
notwithstanding,  Borrower  shall never be required to pay any amounts which may
be  characterized  as unearned  interest  and shall never be required to pay any
amounts, if characterized as interest, at a rate in excess of the Highest Lawful
Rate,  and if the effective  rate of interest  which would  otherwise be payable
under this  Agreement  would exceed the Highest  Lawful Rate, or if Lender shall
receive any amounts  characterized as unearned  interest or shall receive monies
that are deemed to constitute  interest  which would increase the effective rate
of interest  payable by Borrower under this Agreement to a rate in excess of the
Highest Lawful Rate,  then (i) the amount of interest  which would  otherwise be
payable by Borrower under this Agreement  shall be reduced to the amount allowed
by  applicable  law,  and (ii) any  unearned  interest  paid by  Borrower or any
interest paid by Borrower in excess of the Highest Lawful Rate shall be refunded
to Borrower. It is further agreed that, without limitation of the foregoing,  if
payments made hereunder are  characterized as interest,  all calculations of the
rate of  interest  contracted  for,  charged or  received  by Lender  under this
Agreement are made for the purpose of determining  whether such rate exceeds the
Highest Lawful Rate


                                       13

<PAGE>


applicable  to Borrower  (such Highest  Lawful Rate being the "Lender's  Maximum
Permissible  Rate"),  and shall be made,  to the extent  permitted by usury laws
applicable to Borrower (now or hereafter enacted), by amortizing,  prorating and
spreading  in equal  parts  during  the period of the full  stated  term of this
Agreement all interest at any time contracted for, charged or received by Lender
in connection therewith.  If at any time and from time to time (i) the amount of
interest payable to Lender on any date shall be computed at the Lender's Maximum
Permissible  Rate  pursuant  to this  Section  9.12 and (ii) in  respect  of any
subsequent interest  computation period the amount of interest payable to Lender
would be less than the  amount of  interest  payable to Lender  computed  at the
Lender's Maximum Permissible Rate, then the amount of interest payable to Lender
in respect of such subsequent  interest  computation period shall continue to be
computed at the  Lender's  Maximum  Permissible  Rate until the total  amount of
interest  payable to Lender shall equal the total amount of interest which would
have been payable to Lender if the total  amount of interest  had been  computed
without giving effect to this Section 9.12.

         SECTION 9.13 No Oral Agreements.  THIS WRITTEN AGREEMENT REPRESENTS THE
FINAL AGREEMENT BETWEEN AND AMONG THE PARTIES HERETO AND MAY NOT BE CONTRADICTED
BY EVIDENCE OF PRIOR,  CONTEMPORANEOUS,  OR  SUBSEQUENT  ORAL  AGREEMENTS OF THE
PARTIES HERETO.

         SECTION  9.14  Limited  Recourse.   Anything  herein  to  the  contrary
notwithstanding,  the  obligation  of Borrower to Lender to repay the  principal
amount of the Loan  and/or  interest  and fees  with  respect  thereto  shall be
limited to the  Collateral  for the Loan;  provided,  however,  the Borrower (i)
shall be  required  to  perform  all of its  other  covenants,  indemnification,
exculpation and other obligations hereunder and (ii) shall remain liable for any
breaches of its representations,  warranties and covenants hereunder and for its
indemnification, exculpation and other obligations hereunder.

         THERE ARE NO UNWRITTEN AGREEMENTS BETWEEN AND AMONG THE PARTIES HERETO.


                                       14

<PAGE>


         IN WITNESS  WHEREOF,  the  parties  have caused  this  Agreement  to be
executed in Chicago, Illinois as of the date first above written.

                           OAK TREE RECEIVABLES, INC.
                           as Borrower

                           By: ____________________________________
                           Name Printed:  Michael J. Gerber
                           Title:  Vice President



                           1111 Park Centre Boulevard
                           Suite 340
                           Miami, Florida  33169
                           Telephone No.  (305) 624-0007
                           Facsimile No.  (305) 624-0911
                           Attention:  Michael J. Gerber

                           SAM FUND I, L.P.,
                           as Lender

                           By SAM Fund General Partner, L.L.C.,
                           its general partner


                           By:____________________________________
                           Name Printed: Loy Deloney
                           Title:  Manager



                           5821 Lakehurst
                           Dallas, Texas 75230
                           Telephone No. (214) 363-8171
                           Facsimile No. (214) 363-3366
                           Attention: J. Christopher Mallick


                                       15

<PAGE>



                           SAM PM, L.P.,
                           as Program Manager

                           By SAM Holdings General Partner, L.L.C.,
                           its general partner


                           By: ____________________________________
                           Name Printed: Loy Deloney
                           Title: Manager



                           8201 Preston Road
                           Suite 450
                           Dallas, Texas 75225
                           Telephone No. (214) 739-4688
                           Facsimile No. (214) 739-4606
                           Attention: J. Christopher Mallick


                                       16

<PAGE>


                             SCHEDULE 1. DEFINITIONS


         "Adverse Claim" means any lien, security interest,  charge, encumbrance
or other right or claim of any Person other than Lender or Lender's assigns.

         "Affiliate"  means,  as to any Person,  any other  Person  controlling,
controlled by, or under common control with, that Person.

         "Agreement" is defined in the preamble.

         "Application" means a loan information and application form relating to
Borrower.

         "Bankruptcy  Event"  means,  as to any  Person,  any  of the  following
events:

                 (a)(i) a case or other proceeding  shall be commenced,  without
the  application  or  consent  of  such  Person,  in  any  court,   seeking  the
liquidation,  reorganization,  debt  arrangement,  dissolution,  winding  up  or
composition  or  readjustment  of debts of such  Person,  the  appointment  of a
trustee,  receiver,  custodian,  liquidator,  assignee,  sequestrator  or  other
similar official for such Person or for any substantial part of its property, or
any similar  action as to such  Person  under any law  relating  to  bankruptcy,
insolvency,  reorganization,  winding up or  composition or adjustment of debts,
and such case or proceeding shall continue  unstayed or undismissed for a period
of 30 days;  or (ii) an order for  relief in  respect  of such  Person  shall be
entered  in an  involuntary  case  under the  Federal  bankruptcy  laws or other
similar laws now or hereafter in effect; or

                 (b) such Person (i) shall  commence a  voluntary  case or other
proceeding under any applicable  bankruptcy,  insolvency,  reorganization,  debt
arrangement,  dissolution  or other  similar law now or hereafter in effect,  or
(ii) shall  consent to the  appointment  of or taking  possession by a receiver,
liquidator,  assignee,  custodian,  sequestrator or other similar  official for,
such Person or for any substantial part of its property, or (iii) shall make any
general  assignment for the benefit of creditors,  or shall fail to, or admit in
writing its inability  to, pay its debts  generally as they become due, or, if a
corporation or similar  entity,  its board of directors  shall vote to implement
any of the foregoing described in this clause (b);

         "Borrower" is defined in the preamble.

         "Borrower Party" is defined in Section 8.3.

         "Borrower's  Account" means such bank account as Borrower may designate
by notice to Program Manager from time to time.

         "Borrowing Base" is defined in Schedule 6.

         "Borrowing Base Certificate" is defined in Schedule 5.

         "Borrowing Notice" is defined in Section 2.2.


                               Schedule 1, Page 1

<PAGE>



         "Business Day" means a day on which commercial  banks in Dallas,  Texas
are not authorized or required to be closed for business.

         "Cash Collateral Account" is defined in Section 3.8.

         "Coast"  means 1st Coast  Rehabilitation,  Inc., a Florida  corporation
and/or 1st Coast Physical Medicine Associates, Inc., a Florida corporation.

         "Collateral" is defined in Section 2.5.

         "Collection and Servicing Agreement is defined in Section 5.1.

         "Collection and Servicing Fee" is defined in Section 3.2.

         "Collections"  means all  funds  received  by or on  behalf of  Lender,
Borrower,  Program  Manager or any other Person from or on behalf of Obligors in
payment of any amount owed with respect to any Receivable.

         "Commitment" is defined in Section 2.1.

         "Commitment Termination Date" is defined in Section 2.1

         "Commitment Amount" is defined in Section 2.1.

         "Constituent  Documents"  means,  with  respect to a Person  which is a
corporation,  its certificate (or articles) of incorporation  and by-laws,  with
respect to a Person which is a limited  partnership,  its certificate of limited
partnership and agreement of limited partnership,  and with respect to any other
Person, documents which are similar in purpose to the foregoing.

         "Contract"  means an  agreement  that  requires  an  Obligor to pay for
services  rendered  or  medical  equipment  or goods  sold,  leased or rented to
individuals by Borrower or an Affiliate of Borrower from time to time, including
an agreement  with any Managed  Care  Obligor or with an Insurance  Obligor or a
Governmental Obligor.

         "Data Interface" is defined in Section 4.2.

         "Date of Service"  means with respect to medical  services  rendered or
goods  provided  by Borrower to an  individual,  the date the  services or goods
giving rise to the related Receivable were rendered or provided.

         "Default Rate" is defined in Section 3.1.

         "Dollar" and "$" mean lawful money of the United States of America.

         "DRG Code" means a Diagnosis Related Group code.

         "Edited Face Value" is defined in Schedule 6.


                               Schedule 1, Page 2

<PAGE>


         "Eligible Receivables" is defined in Section 2.4.

         "EOB" means the  explanation  of benefits,  remittance  advice or other
record that is provided by an Obligor explaining how it determined the amount it
will or will not pay with respect to a Receivable of which it is the Obligor.

         "ERISA" means the Employee Retirement Income Security Act of 1974.

         "Event of Default" means any of the following:

                 (a) failure on the part of  Borrower to remit any sums  payable
by it under this Agreement, the Note or any other Transaction Document when due;

                 (b) failure on the part of Borrower to deliver any  information
required pursuant to a Transaction  Document within five calendar days after the
date on which such information is required to be delivered;

                 (c)  failure on the part of  Borrower  to observe or perform in
any material respect any other term, covenant,  condition or agreement contained
in this  Agreement or any other  Transaction  Document,  if such failure has not
been  cured  within 30 days  after the  earlier of (i)  Borrower  having  actual
knowledge of such failure or (ii) receipt of written  notice thereof by Borrower
from Program Manager or Lender;

                 (d) any  representation  or warranty of Borrower  contained  in
this Agreement or any other  Transaction  Document  proves to have been false or
misleading in any material respect when made or deemed made;

                 (e) a  Bankruptcy  Event shall have  occurred  with  respect to
Borrower; or

                 (f) the Internal  Revenue  Service  shall file notice of a lien
pursuant to Section 6323 of the Internal Revenue Code of 1986, as amended,  with
regard  to any of the  assets  of  Borrower  and such  lien  shall not have been
released within 5 days, or the Pension Benefit  Guaranty  Corporation  shall, or
shall  indicate its intention to, file notice of a lien pursuant to Section 4068
of ERISA with regard to any of the assets of Borrower or any of its Affiliates.

         "Facility Fee" is defined in Section 3.2.

         "Final Payout Date" means the date following the Maturity Date on which
the Loan and all other  Obligations  payable by Borrower  under the  Transaction
Documents have been paid in full.

         "Government  Consents"  means  approvals  of  governmental  authorities
necessary  for  Borrower's  business as currently  conducted  and proposed to be
conducted,  the ownership,  use,  operation and  maintenance of its  properties,
facilities  and assets  and the  performance  by  Borrower  of the  transactions
contemplated by the Transaction Documents.

         "Government  Entity" means the United States,  any state thereof or the
District of Columbia,  any political subdivision of any of the foregoing and any
agency or  instrumentality  of any of the  foregoing or any fiscal  intermediary
thereof.


                               Schedule 1, Page 3

<PAGE>




         "Government  Lock-Box"  means  the  lock-box  created  by  each  Seller
pursuant to Section 4.2(c).

         "Government  Lock-Box  Account" means the lock-box  account  created by
each Seller pursuant to Section 4.2(c).

         "Government  Obligor"  means a  Government  Entity that is obligated to
make any payments with respect to Receivables  representing  amounts owing under
Medicare,  Medicaid  or any other  program  established  by Federal or state law
which  provides  for  payments  for health  care goods or services to be made to
providers  thereof;  provided that  "Government  Obligor"  shall not include any
workmen's compensation program.

         "Government  Receivable"  means  a  Receivable  that  is  payable  by a
Government Obligor.

         "Highest  Lawful  Rate"  means,  on any date,  the maximum  nonusurious
interest  rate that may under  applicable  federal and  applicable  state law be
contracted for, charged or received under such laws.

         "HMO" means any health maintenance organization.

         "Indemnified  Amounts"  means  any and  all  damages,  losses,  claims,
liabilities and related costs and expenses, including reasonable attorneys' fees
and disbursements.

         "Indemnified Party" is defined in Section 8.1.

         "Insurance Obligor" means an Obligor that is an Insurer.

         "Insurer"  means any  non-individual  Person  (other than a  Government
Obligor)  located in the  United  States  that,  in the  ordinary  course of its
business,  agrees  to pay  for  health  care  goods  and  services  received  by
individuals,  including a commercial  insurance company,  a nonprofit  insurance
company,  an employer or union that  self-insures  for employee or member health
insurance,  or a Managed Care Obligor.  "Insurer" includes  insurance  companies
issuing health, personal injury or other types of insurance.

         "Lender" is defined in the preamble.  All  references to Lender in this
Agreement  shall include its successors,  designees and assigns  (whether or not
such  successors,  designees  or  assignees  are  specifically  mentioned in any
particular provision of this Agreement).

         "Lender's  Account"  means such bank  account as  Program  Manager  may
designate from time to time in a writing to Borrower.

         "Lender's Maximum Permissible Rate" is defined in Section 9.12.

         "Lien"  means a mortgage,  pledge,  lien,  security  interest,  charge,
encumbrance or preference,  priority or other security agreement or preferential
agreement  or  arrangement  of any  kind or  nature  whatsoever  (including  any
retained  security  title of a  conditional  vendor or lessor,  any  capitalized
leases and the filing of any financing statement under the UCC or comparable law
of any jurisdiction).

         "Loan" is defined in Section 2.1.


                               Schedule 1, Page 4

<PAGE>


         "Loan  Date"  means with  respect to the Loan,  the date upon which the
Loan is made;  provided  that the Loan  Date  shall  not  occur on or after  the
Commitment Termination Date.

         "Lock-Box"  means each Lock-Box  established  pursuant to a Transaction
Document.

         "Lock-Box Account" means the Non-Government Lock-Box Account.

         "Lock-Box Agreement" means the Non-Government Lock-Box Agreement.

         "Lock-Box  Bank" means any bank  identified  as a "Lock-Box  Bank" in a
Lock-Box Agreement.

         "Managed Care Obligor"  means an Obligor that is an MSO, a PPO, an HMO,
an MCO, or any entity or any  comparable  Person  where the primary  contractual
relationship  for  payment of medical  services  is between  such Person and the
patient or beneficiary and not such Person and the medical service providers.

         "Material  Adverse  Effect" means a material  adverse effect on (a) the
financial condition,  operations,  assets, business,  properties or prospects of
Borrower,  (b) the  ability of Borrower  to perform  its  obligations  under any
Transaction  Document or to exercise  its rights  under any  Contract or (c) the
performance of the Eligible Receivables.

         "Maturity  Date" means the date this  Agreement  is  terminated,  which
shall be the  earliest of (i)  September  16, 1997,  (ii) the date  specified by
Borrower  in a notice to  Program  Manager  (which  notice  may be given with or
without  cause),  which  date  shall  fall at least 240 days after the date such
notice is sent,  (iii) the date on which a  Bankruptcy  Event  with  respect  to
Borrower  shall  have  occurred  and (iv)  the date  after  the  occurrence  and
continuation  of any Event of  Default  (other  than in clause  (iii))  upon the
giving of notice by Program Manager to Borrower.

         "MCO" means a managed care organization.

         "Medicaid" means the medical assistance program  established by a state
pursuant to Title XIX of the Social Security Act of 1935, 42 U.S.C.  ss.ss. 1396
et seq.

         "Medical Records" means all Records that evidence,  or otherwise relate
to, health care services rendered, or health care goods provided, by Borrower to
an individual.

         "Medicare"  means the health  insurance  program  established  by Title
XVIII of the Social Security Act of 1935, 42 U.S.C. ss.ss. 1395 et seq.

         "MSO" means a managed service organization.

         "Non-Government  Lock-Box  Agreement"  means  the  agreement  delivered
pursuant to clause (i) of Schedule 2.

         "Note" is defined in Section 3.7.


                               Schedule 1, Page 5

<PAGE>


         "Obligations"  means the Loan,  all amounts  due by Borrower  under the
Note, this Agreement and the other Transaction Documents.

         "Obligor" means,  with respect to any Receivable,  the Person primarily
or secondarily obligated to make payments on that Receivable.

         "Obligor  Notice"  means,  as the case may be, a notice to an Insurance
Obligor in the form of Exhibit B-1 or a notice to Government Obligor in the form
of Exhibit B-2.

         "Parent" means Oak Tree Medical Systems, Inc., a Delaware corporation.

         "Person"  means  an   individual,   partnership,   corporation,   trust
(including a business trust),  joint stock company,  limited liability  company,
unincorporated association, joint venture, government or any agency or political
subdivision  thereof  or any other  entity,  whether  acting  in an  individual,
fiduciary or other capacity.

         "PPO" means a preferred provider organization.

         "Program  Manager" is defined in the preamble.  All  references in this
Agreement to the Program  Manager  shall include its  successors,  designees and
assigns (whether or not such  successors,  designees or assigns are specifically
mentioned in any particular provision of this Agreement).

         "Receivable"  means any right of Borrower  to payment  from an Obligor,
whether or not constituting an account,  chattel paper, an instrument, a general
intangible or an interest in or claim under any policy of insurance, arising (a)
from  the  sale,  rental  or lease  of  health  care  goods  (including  medical
equipment)  to an  individual  or the  provision  of health care  services to an
individual  (and any  services or sales  ancillary  thereto) or (b) under health
care  capitation and similar  agreements,  in each case including all rights and
remedies  of Borrower  relating  thereto  (including  all  guarantees,  security
interests  and  other  arrangements  supporting  or  securing  such a  right  to
payment),  together  with any and all proceeds in any way  derived,  directly or
indirectly, from any of the foregoing.

         "Receivables  Information"  means, with respect to any Receivable,  (a)
the name and social security number of the applicable  patient,  (b) the Date of
Service relating to that Receivable, (c) the diagnosis,  procedures and services
relating to that Receivable, (d) the charges therefor, (e) any other information
required to complete a HCFA 1500 form with respect to that  Receivable,  (f) any
other  information  that an applicable  Obligor will require in order to accept,
process and make timely payment on that Receivable and (g) any other information
specified from time to time by Program Manager.

         "Receivables List" means the Receivable-by-Receivable  list attached to
a Borrowing Base Certificate.

         "Records" means books, documents, papers, patient files, patient health
records and other records and information (including information contained in or
on  computer  programs,  disks  and  tapes)  that  evidence  Receivables  or are
otherwise necessary or desirable to collect  Receivables  (including all Medical
Records).

         "Rejected Receivable" is defined in Section 2.4.


                               Schedule 1, Page 6

<PAGE>


         "Reviewing  Person"  means each of Lender,  Program  Manager  and their
respective  agents and  designees,  including  any Person that is  permitted  by
Paragraph 2 of Schedule 5 to be physically present in the administrative offices
of Borrower during normal business hours.

         "Riverside" means Riverside CORF, Inc., a Florida corporation.

         "Seller" means one of Riverside or Coast.

         "Support  Servicer"  means any Person  designated  from time to time as
such in a notice from Program Manager to Borrower.

         "Taxes"  means any  present  or future  income,  unemployment  or other
taxes,  fees,  duties,  withholding  or other  charges of any nature  whatsoever
imposed by any taxing  authority  (whether  pursuant to Federal,  state or local
law).

         "Transaction  Accounts" means each account established  pursuant to the
Transaction   Documents   including   the  Cash   Collateral   Account  and  the
Non-Government  Lock-Box  Account  established  pursuant  to the  Non-Government
Lock-Box Agreement.

         "Transaction  Documents"  means this Agreement,  the Note and any other
documents or agreements to be executed and delivered in connection herewith.

         "UCC" means the Uniform  Commercial Code as from time to time in effect
in the applicable jurisdiction or jurisdictions.

         "Weekly Payment Date" means the first Business Day of each week.


                               Schedule 1, Page 7

<PAGE>


                         SCHEDULE 2. INITIAL CONDITIONS
                                  (Section 4.1)

Documents to be delivered:

         (a) The Application,  duly completed by Borrower,  together with all of
the information called for by the Application.

         (b) A certificate  of the Secretary or Assistant  Secretary of Borrower
certifying:

                 (i) the Constituent Documents of Borrower,  with the applicable
Constituent  Documents  having been duly  certified by the Secretary of State of
Borrower's  state  of  formation,  as of a recent  date  acceptable  to  Program
Manager;

                 (ii) a copy of the  resolutions  of the Board of  Directors  of
Borrower approving the Transaction  Documents and the transactions  contemplated
thereby; and

                 (iii) the names and true signatures of the officers  authorized
on Borrower's  behalf to sign the  Transaction  Documents (on which  certificate
Program  Manager  and  Lender may  conclusively  rely until such time as Program
Manager  shall  receive  from  Borrower  a  revised   certificate   meeting  the
requirements of this clause (b)(iii)).

         (c) A good standing certificate for Borrower issued by the Secretary of
State of Borrower's state of formation.

         (d) A search report  provided in writing to Program Manager by a Person
acceptable to Program Manager,  listing all effective financing  statements that
name  Borrower,  Parent,  Riverside or Coast as debtor and that are filed in the
jurisdictions  in which filings were made pursuant to Section 4.2(h) and in such
other  jurisdictions  as Program Manager may reasonably  request,  together with
copies of such financing statements and searches of applicable Federal and state
court and agency  dockets and lien records  showing any judgment,  Tax and ERISA
liens affecting the Receivables.

         (e) A power of  attorney  from  Borrower in  substantially  the form of
Exhibit E.

         (f)  One or more  financing  statements  signed  by  Borrower,  Parent,
Riverside  or  Coast  and  each  secured  party  that  has an  Adverse  Claim on
Receivables of Borrower,  Parent,  Riverside or Coast and other items covered by
Section  2.5,  which  are  necessary  or, in the  opinion  of  Program  Manager,
desirable under the UCC or any comparable law of all  appropriate  jurisdictions
to terminate  such Adverse Claim,  together  with, if applicable,  signed payoff
letters from such secured party.

         (g) The Note, duly executed by Borrower.

         (h) A duly executed Collection and Servicing Agreement.

         (i) A duly executed Non-Government Lock-Box Agreement.

         (j) A Borrowing Base Certificate in  substantially  the form of Exhibit
F.


                               Schedule 2, Page 1

<PAGE>


         (k) Such other  agreements,  instruments,  certificates,  opinions  and
other documents as Program Manager may reasonably request.

Other conditions:

         (l) Program Manager shall have designated each of the initial  Lender's
Account and Support Servicer in writing to Borrower.

         (m) Program  Manager  shall  have  received  any  applicable   written
disclosure  contemplated by Paragraph 5 of Schedule 3 or Paragraph 3 of Schedule
4.

         (n) Payment of $2,000 to Lender's counsel.


                               Schedule 2, Page 2

<PAGE>


                   SCHEDULE 3. REPRESENTATIONS AND WARRANTIES
                                 AS TO BORROWER

         1. Existence, etc. Borrower was duly formed and is validly existing and
in good  standing  under  the  laws of its  state  of  organization  and is duly
qualified  to do  business,  is in good  standing and  possesses  all  necessary
licenses and approvals in each  jurisdiction in which the nature of its business
requires such qualification,  licenses or approvals.  Borrower is a wholly-owned
Subsidiary of Parent.

         2.  Authorization,  etc. The  execution,  delivery and  performance  by
Borrower of the  Transaction  Documents  to which it is a party,  including  the
granting  of a Lien on the  Collateral  by  Borrower  to Lender,  (a) are within
Borrower's  powers  or legal  capacity,  (b) have been  duly  authorized  by all
necessary  action,  (c)  do not  contravene  or  conflict  with  (i)  Borrower's
Constituent  Documents,  (ii) any Contract or any other contractual  restriction
binding  on or  affecting  Borrower  or its  property  or (iii)  any law,  rule,
regulation,  order, writ,  judgment,  award,  injunction or decree binding on or
affecting  Borrower or any of its property,  (d) do not result in the imposition
of any Adverse Claim on any of Borrower's properties, other than pursuant to the
Transaction Documents, (e) do not require any authorization,  consent,  approval
or other action by, or notice to or filing with, any  governmental  authority or
regulatory  body or  other  Person,  except  for  the  filing  of the  financing
statements referred to in Section 4.2(h), and (f) do not require compliance with
any bulk sales act or similar law.

         3.  Enforceability.  This  Agreement and each of the other  Transaction
Documents  has been duly  executed and  delivered by Borrower and  constitutes a
legal, valid and binding  obligation of Borrower  enforceable in accordance with
its terms,  except as enforceability  may be limited by bankruptcy,  insolvency,
reorganization  or other similar laws  affecting the  enforcement  of creditors'
rights generally and by general principles of equity, regardless of whether such
enforceability is considered in a proceeding in equity or at law.

         4.  Financial  Statements.  The balance  sheets of Borrower and Parent,
respectively,  and the  related  statements  of income of  Borrower  and Parent,
respectively,  for the  fiscal  year  then  ended,  copies  of which  have  been
furnished to Program Manager, fairly present the financial condition of Borrower
and Parent,  respectively,  as at such date and the results of the operations of
Borrower and Parent, respectively,  for the period ended on such date. Since the
date of such financial statements,  there has been no material adverse change in
the financial condition,  operations,  assets, business, properties or prospects
of Borrower and Parent, respectively.

         5.   Proceedings.    Each   litigation,    arbitration,    governmental
investigation  or proceeding,  labor  controversy or other  proceeding  which is
pending (or which has been threatened in writing) affecting Borrower,  or any of
its properties,  businesses, assets or revenues has been disclosed in writing to
Program Manager.

         6.  Regulatory  Matters;  Contracts.  (a)  Borrower  has all  necessary
permits, licenses, agreements,  accreditations,  certifications,  identification
numbers and  Government  Consents  to operate and conduct its  business as it is
presently being conducted,  subject to minor  exceptions and deficiencies  which
could not,  individually  or in the aggregate,  reasonably be expected to have a
Material Adverse Effect.

         (b) Each  Contract  relating  to an Eligible  Receivable  is the legal,
valid,  binding and enforceable  obligation of the related  Obligor,  is in full
force and effect and has not been amended or otherwise


                               Schedule 3, Page 1

<PAGE>



modified,  rescinded  or revoked or assigned.  Borrower and the related  Obligor
each is in compliance  with the  requirements  of each  Contract  relating to an
Eligible Receivable.

         7. UCC Matters.  The chief  executive  office of Borrower is located at
Borrower's  address  referred to in Section 9.2 (or at other locations that have
been notified to Program  Manager in accordance  with  Paragraph 6 of Schedule 5
and are located in  jurisdictions  where all actions  required by that Paragraph
have been  completed).  Borrower's legal name is as set forth in the preamble to
this  Agreement,  and except as set forth in the  Application,  Borrower has not
changed its name in the last six years and, during such period, Borrower did not
use, and Borrower does not now use, except as otherwise permitted by Paragraph 6
of  Schedule  5, any trade  names,  fictitious  names,  assumed  names or "doing
business as" names. Borrower has not changed the location of its chief executive
office or its name, identity or corporate structure within the four months prior
to the date of this Agreement. Borrower does not have an office or assets in the
States of Colorado, Kansas, New Mexico, Oklahoma, Utah or Wyoming.

         8. Solvency.  Borrower is solvent and will not become  insolvent  after
giving effect to the transactions  contemplated by this Agreement;  Borrower has
not incurred  debts or  liabilities  beyond its ability to pay and is paying its
debts as they come due;  Borrower will,  after giving effect to the transactions
contemplated  by this  Agreement,  have an adequate amount of capital to conduct
its business in the foreseeable  future; and the Loan hereunder are made in good
faith and  Borrower  has no actual  intent to hinder,  delay or  defraud  either
present or future creditors of Borrower.

         9. Taxes.  Borrower or Parent has filed on a timely  basis all Federal,
state and local Tax returns  required to be filed and has paid, or made adequate
provision for payment of, all Taxes,  assessments and other governmental charges
due from Borrower or Parent.

         10. ERISA.  Each pension plan or profit  sharing plan to which Borrower
or Parent is a party has been fully funded in accordance with the obligations of
Borrower or Parent set forth in such plan.

         11.   Information.   All  documents,   Medical   Records,   Receivables
Information  and other  information  furnished  by or on behalf of  Borrower  to
Lender,  Support  Servicer,  Program  Manager  and any  transferees,  agents and
employees of any thereof prior to the date of this Agreement and during the term
of this Agreement,  or in connection  with any transaction  contemplated by this
Agreement,  do not and will not contain any untrue  statement of a material fact
or omit to state a material  fact  necessary  to make the  statements  contained
therein,  in  light  of the  circumstances  under  which  they  were  made,  not
misleading.


                               Schedule 3, Page 2

<PAGE>


                   SCHEDULE 4. REPRESENTATIONS AND WARRANTIES
                           AS TO ELIGIBLE RECEIVABLES

         1. With  respect to each such  Receivable:  (a) its  Obligor  (i) is an
Insurance Obligor, a Government Obligor or other Obligor agreed to in writing by
Lender,,  (ii) is a resident of the United States,  (iii) is not an Affiliate of
Borrower,  (iv) is the primary Obligor with respect to such Receivable;  and (v)
is not the subject of a Bankruptcy Event.

                 (b) the Date of Service for such Receivable is at least 60 days
prior to the statutory and contractual filing deadline for collection applicable
to such Receivable;

                 (c) it is denominated and payable only in dollars in the United
States  and has an Edited  Face  Value not in excess of fifty  thousand  dollars
($50,000); and

                 (d) it is not a Receivable (or in a category of Receivables) as
to which  Program  Manager  has  notified  Borrower  that  Program  Manager  has
determined prior to the date of such determination, in its sole discretion, that
such Receivable (or category of  Receivables)  is unacceptable  for inclusion in
the Borrowing Base.

         2. The Obligors  identified on each  Receivables  List are obligated to
pay at least the Edited Face Value of the related Receivables described thereon.

         3.  None  of  such  Receivables  (a) has  been  compromised,  adjusted,
extended,  satisfied,  subordinated,  rescinded,  set  off or  modified  (and no
obligations of the related Obligor with respect thereto have been waived) or (b)
is subject to compromise,  adjustment, extension,  satisfaction,  subordination,
rescission,  set off,  counterclaim,  defense or any other modification  whether
arising out of transactions concerning the Contract or otherwise unless the same
has been  disclosed in writing to Program  Manager and is  acceptable to Program
Manager.

         4. True and correct copies of all Medical Records relating to each such
Receivable  have been  delivered  by Borrower to Program  Manager,  on behalf of
Lender.

         5.  Each such  Receivable  is owned by  Borrower  free and clear of any
Adverse Claim, other than (a) the rights of Lender under this Agreement; (b) any
rights of any Person  claiming  under  Lender;  and (c) any rights of an Obligor
potentially  to assert that the amount  billed with  respect to such  Receivable
exceeds the amount  that the Obligor  must pay  pursuant  to  applicable  law or
contract.  No  Obligor of any such  Receivable  has  received  any notice of any
Adverse  Claim  against,  interest  in,  or  Lien  on all or any  part  of  such
Receivable  and the other  items  assigned  pursuant  to Section  2.5 other than
interests  being  granted  to Lender and its  assignees  and other than any such
adverse claim,  interest,  or lien that will no longer exist  immediately  after
such date.

         6.  Section  2.5  vests in  Lender a valid  security  interest  in such
Receivables and other items purported to be created  thereby.  No action,  other
than the execution and delivery of this  Agreement,  the filing of UCC financing
statements in the state in which Borrower's  office referenced in Section 9.2 is
located,  the execution and delivery of the Obligor  Notices,  and the giving of
value by Lender is required to perfect the interest of Lender in the  Collateral
acquired by Lender, and all such actions have been accomplished by the date each
such Receivable is included in the Borrowing Base (it being understood


                               Schedule 4, Page 1

<PAGE>



that Section 4.2 contemplates  that Program Manager will send Obligor Notices to
the  applicable  Obligors).  No effective  financing  statement or other similar
instrument  covering any such  Receivable or any interest  therein is on file in
any recording office except such as may be filed in favor of (or against) Lender
or Lender's assigns.

         7.      Each such Receivable and each of the related Contracts:

                 (a) was created in accordance with and complies in all respects
with all laws, rules,  regulations,  orders,  decrees and directives  applicable
thereto  (including laws,  rules,  regulations,  orders,  decrees and directives
relating to usury,  consumer protection,  truth in lending, fair credit billing,
fair credit reporting, equal credit opportunity,  fair debt collection practices
and privacy), and no party to such related Contracts is in violation of any such
law, rule, regulation, order, decree or directive in any material respect; and

                 (b) is in full force and effect and represents and  constitutes
a legal,  valid and  binding  obligation  of the  related  Obligor,  enforceable
against such Obligor in accordance with its terms,  except as enforceability may
be limited by  bankruptcy,  insolvency,  reorganization  or other  similar  laws
affecting  the  enforcement  of  creditors'  rights  generally  and  by  general
principles of equity, regardless of whether such enforceability is considered in
a proceeding in equity or at law.

         8. Each such Receivable (a) is payable,  in an amount equal to not less
than its Edited  Face  Value,  by the  Obligor  identified  by Borrower as being
obligated to do so, (b) is based on an actual and bona fide  rendition of health
care services to, or the  furnishing of goods to, an individual by Parent in the
ordinary  course of its  business,  and (c) is not evidenced by  instruments  or
chattel paper within the meaning of the UCC.

         9.  The  goods  and  services  provided  and  reflected  in  each  such
Receivable were medically necessary,  and the patient has received such goods or
services.

         10. The Edited Face Value for each such  Receivable (a) does not exceed
the usual,  customary  and  reasonable  fees  charged by other  medical  service
providers  in each  of  Parent's  and the  applicable  patient's  community  for
services  or goods  which are the same as or  similar to the  services  or goods
constituting  the  basis  for  such  Receivable  and (b)  does  not  exceed  any
limitations  imposed  by  any  applicable  workmen's   compensation  statute  or
regulations or contracts for reimbursement from the related Obligor.

         11. Parent has treated the  assignment of such  Receivables to Borrower
as a sale  or  contribution  for all  purposes,  including  Tax  and  accounting
purposes,  and has  reflected  such  sale or  contribution  treatment  in all of
Parent's and Borrower's  relevant books,  records,  computer files, tax returns,
financial  statements other  applicable  documents and regulatory  filings.  The
patient to which such  Receivable  relates has signed an  assignment of benefits
evidencing such patient's intent to assign its rights to payment with respect to
such Receivable for collateral purposes to Borrower and its assignees.

         12. There are no actions, suits,  proceedings or investigations pending
or threatened before any court, administrative agency, arbitrator,  governmental
body or other  tribunal (i)  asserting  the  invalidity  of a Receivable  or any
Contract related thereto,  (ii) with respect to any Receivable,  relating to the
bankruptcy or insolvency  of the related  Obligor,  (iii) seeking the payment of
such Receivable or payment


                               Schedule 4, Page 2

<PAGE>



or performance of such Contract or (iv) seeking any determination or ruling that
might  adversely  affect  the  validity,   collectibility,   timely  payment  or
enforceability of such Receivable or any Contract related thereto.

         13.     Intentionally Left Blank.

         14.  No  default  has  occurred  under  any  Contract  relating  to any
Receivable which is reasonably  likely to have a material adverse effect on such
Contract or the related Receivable.

         15. As to each  Receivable  which is an  interest in or claim under any
policy of insurance, such policy of insurance contains no provisions restricting
or in any way conditioning  the  assignability of any interest in or claim under
such policy of insurance.

         16. All such Receivables were generated by Riverside or Coast,  each of
which is a wholly- owned subsidiary of Parent.


                               Schedule 4, Page 3

<PAGE>


                        SCHEDULE 5. BORROWER'S COVENANTS

         1. Legal  Matters.  (a) Borrower  shall comply in all respects with all
applicable  laws,  rules,  regulations  and orders and preserve and maintain its
existence, rights, franchises, qualifications and privileges. Borrower shall pay
all of its Taxes  when due,  unless  and only to the  extent  that  Borrower  is
contesting such Taxes in good faith and by appropriate  proceedings (and has set
aside on its  books  adequate  reserves  relating  thereto  in  accordance  with
generally accepted accounting principles).

         (b) Borrower shall comply, in all respects, with all laws, acts, rules,
regulations,  orders,  decrees and  directives  of any  Federal,  state or local
governmental authority (including laws, rules and regulations relating to usury,
consumer  protection,   truth-in-lending,   fair  credit  billing,  fair  credit
reporting,  equal  credit  opportunity,   fair  debt  collections  and  privacy)
applicable to the  Receivables or any part thereof or any related  Contracts and
with respect to Borrower and its business and properties.

         (c)  Borrower  shall  comply,  in  all  material  respects,   with  its
obligations under the Contracts relating to Receivables. The exercise by Lender,
Program  Manager  or any of their  respective  agents  or  designees  (including
Support  Servicer) or assignees of rights  hereunder shall not relieve  Borrower
from such obligations.

         2. Books and Records; Access. (a) Borrower shall (i) keep its books and
accounts in accordance with sound  accounting  principles and, (ii) make a clear
and  unambiguous  notation on its computer  files and other books and records to
indicate that its Receivables have been assigned to Lender as security. Borrower
also shall  maintain  and  implement  administrative  and  operating  procedures
pursuant to Program  Manager's  instructions  (including  an ability to recreate
records  evidencing  Receivables  and  related  Contracts  in the  event  of the
destruction  of the  originals  thereof),  and keep and maintain all  documents,
books, records and other information reasonably necessary or advisable to assist
Program  Manager  in  collecting  all  Receivables   after  the  occurrence  and
continuation of an Event of Default.

         (b) Borrower  shall permit each  Reviewing  Person at all times to have
full  and  free  access  during  normal   business   hours  to  all  the  books,
correspondence   and  records  of  Borrower   insofar  as  they  relate  to  the
Receivables,  to  examine  the  same,  to take  extracts  therefrom  and to make
photocopies  thereof, and Borrower agrees to render to each Reviewing Person, at
Borrower's  cost and  expense,  such  clerical  and other  assistance  as may be
reasonably  requested in connection  with the exercise of the foregoing  rights.
Borrower shall,  from time to time during regular business hours as requested by
a Reviewing  Person,  discuss matters  relating to the Receivables or Borrower's
performance  under the  Transaction  Documents or the Contracts  relating to the
Receivables  with any of the officers or employees of Borrower having  knowledge
of such matters.

         (c)  Borrower  shall  treat  the  transactions   contemplated  by  this
Agreement,  including the assignment for security of each  Receivable to Lender,
as a Loan from Lender to Borrower for all purposes, including Tax and accounting
purposes,  and shall reflect loan treatment in all of Borrower's relevant books,
records, computer files, Tax returns,  financial statements and other applicable
documents and regulatory filings.

         (d) Borrower  agrees that Program Manager shall be permitted to have at
least one of its employees or designated  representatives  physically present in
the  administrative  offices of Borrower  during normal  business hours for such
purposes as Program Manager may deem appropriate in connection


                               Schedule 5, Page 1

<PAGE>



with  this  Agreement.   Borrower  agrees  that  such  employees  or  designated
representatives shall have the same privilege of access to its files and records
and communication with its employees pertaining to the collection of Receivables
as Borrower's own employees.

         (e) Borrower hereby grants each Reviewing Person the right of access to
an inspection of, during Borrower's  regular business hours, all Records and all
facilities of Borrower,  or  facilities  used by Borrower or by third parties on
behalf  of  Borrower,   including  facilities  at  which  billing,   processing,
collection,  administration or servicing  activities occur or have occurred with
respect to Receivables,  and including  facilities for cash and payment receipts
and processing.  This right of access may be exercised at any time and from time
to time and shall  include  the  right:  (i) to examine  and make  copies of and
abstracts from all records of Borrower and its agents or contractors relating to
its Receivables and the processing and administration  thereof and to Borrower's
performance and nonperformance of its duties and obligations hereunder;  (ii) to
visit the offices and properties of Borrower and its agents and  contractors for
the  purposes  of  examining  the  records  referred  to in  clause  (i) of this
sentence;  and  (iii) to  discuss  matters  relating  to such  matters  with any
officer,  employee,  agent or  representative  of  Borrower  or its  contractors
believed by a Reviewing Person to have knowledge of such matters. Borrower shall
cooperate and be responsible  for the compliance with this Paragraph 2(e) by any
Affiliate or other  Person  engaged by Borrower to assist in the  processing  or
administration of Receivables.

         3.  Reporting.  Borrower shall furnish to Program Manager:

                 (a) as soon as Borrower  learns of the  occurrence of any Event
of Default,  or event that with notice,  passage of time or both would become an
Event of Default,  notice of such event, followed (as soon as practicable and in
any event within five Business Days of such notice) by a written statement of an
officer identified in the most recent certificate delivered pursuant to Schedule
2 setting forth  details of such event and the action that Borrower  proposes to
take with respect thereto;

                 (b) as soon as possible and in any event within three  Business
Days of Borrower  learning  thereof,  notice of (i) any  previously  undisclosed
litigation,  investigation  or proceeding  which could reasonably be expected to
have a  Material  Adverse  Effect,  (ii) any  material  adverse  development  in
previously disclosed litigation and (iii) the occurrence of any Reportable Event
(as defined in Article IV of ERISA) as to any  employee  benefit  plan for which
Borrower has any liability;

                 (c) as soon as possible  and in any event  within one  Business
Day  of  Borrower  learning  thereof,  notice  of  (i)  any  disputes,  offsets,
deductions, defenses or counterclaims which are or may be asserted by an Obligor
against its  obligation  to pay any  amounts  owed on a  Receivable  or (ii) the
occurrence of any other event or condition that would have caused, or may cause,
the  representation  and  warranty  contained in Paragraph 3 of Schedule 4 to no
longer be true and  correct if such  representation  and  warranty  were made by
Borrower on the date of the occurrence of such event or condition;

                 (d) promptly,  from time to time,  updated,  completed,  signed
copies of the patient  consents  referred to in Section 4.2(g) of this Agreement
as such information  contained in such patient consents previously  delivered to
Program Manager changes over time; and

                 (e) on the first  Business  Day of each week a  Borrowing  Base
Certificate  substantially  in  the  form  of  Exhibit  F (the  "Borrowing  Base
Certificate").


                               Schedule 5, Page 2

<PAGE>



                 (f)  promptly,  from  time to  time,  such  other  information,
documents,  records  or  reports  as  Program  Manager  may  from  time  to time
reasonably request.

         4. Certain Matters  Relating to Receivables and  Collections.  Borrower
shall not:

                 (a) except as otherwise expressly provided herein, sell, assign
(by operation of law or otherwise) or otherwise  dispose of, or create or suffer
to exist any Adverse  Claim upon or with respect to, any  Receivable  or related
Contract or assign any right to receive income in respect thereof;

                 (b) compromise, adjust, extend, satisfy, subordinate,  rescind,
set  off,  amend  or  otherwise  modify,  or  otherwise  permit  or agree to any
deviation  from,  the  terms  and  conditions  of any  Receivable,  or except as
disclosed in writing to Program  Manager and Lender prior to the effective  date
thereof,  otherwise amend, modify or waive any term or condition of any Contract
related thereto;

                 (c) make any change in the  character of its  business  (except
for  changes  required  by state  or  Federal  statutes  or  regulations  or for
continued participation in third-party payment programs), which change would, in
either case,  impair the timing of collection or ultimate  collectibility of any
Receivable;

                 (d) change,  modify or rescind any  direction  contained in any
previously delivered Obligor Notice (other than to a Government Obligor); or

                 (e)  otherwise  do  anything  to impair  Lender's  right in any
Receivable, or impede or interfere with the collection of any Receivable.

         5. Payments to Obligors. Borrower shall make all payments to an Obligor
necessary  to prevent such Obligor from  offsetting  an earlier  overpayment  to
Borrower  against  any  amount  which  such  Obligor  owes  with  respect  to  a
Receivable,  and Borrower shall immediately  notify Program Manager in the event
of any action, proceeding,  dispute, offset, deduction,  defense or counterclaim
that is or may be asserted by an Obligor relating to a Receivable.

         6. UCC Matters;  Further  Assurances.  (a) Borrower shall not,  without
providing 60 days' prior  written  notice to Lender and Program  Manager and any
designee  and  filing  such  UCC  financing  statements  and  amendments  to any
previously filed financing statements as Program Manager may require, (i) change
the location of its chief executive  office or the location of the offices where
the Records are kept or (ii) change its name,  identity or  structure or use any
trade names,  fictitious  names,  assumed names or "doing business as" names not
listed in the Application.

         (b)  Borrower  shall not permit any  Receivable  to be  evidenced by an
"instrument"  or  "chattel  paper" (as  defined  in the UCC)  unless the same is
delivered to Lender or Program Manager; provided, that such Receivable shall not
thereafter be an Eligible Receivable.

         (c) Borrower shall, at its expense, maintain the Data Interface in good
working  condition and fully  operational and, at its expense,  take all further
action that either Program Manager or Support  Servicer may reasonably  request,
from time to time, in order to fully effectuate the transactions and information
transfers  contemplated  under  the  Transaction  Documents  to  the  reasonable
satisfaction of each of Program Manager and Support Servicer.


                               Schedule 5, Page 3

<PAGE>



         (d) Borrower  shall, at its expense,  promptly  execute and deliver all
further  instruments,  Records and  documents,  and take all further action that
Program Manager may reasonably request,  from time to time, in order to perfect,
protect  or more  fully  evidence  the Lien of Lender on the  Collateral,  or to
enable Lender,  Support  Servicer or Program  Manager to exercise or enforce the
rights of  Lender  hereunder  or under  the  Collateral.  Without  limiting  the
generality  of the  foregoing,  Borrower  shall,  upon the  request  of  Program
Manager,  execute and file such UCC  financing or  continuation  statements,  or
amendments  thereto  or  assignments  thereof,  and such  other  instruments  or
notices, as may be, in the opinion of Program Manager,  necessary or appropriate
with respect to all or any of the items covered by Section 2.5.  Borrower hereby
authorizes  Program  Manager  to file  one or  more  financing  or  continuation
statements,  and amendments thereto and assignments thereof,  relative to all or
any of the items covered by Section 2.5 without the signature of Borrower  where
permitted  by law.  If  Borrower  fails  to  perform  any of its  agreements  or
obligations  contained in this Agreement,  Program Manager may (but shall not be
required  to)  itself  perform,  or cause  performance  of,  such  agreement  or
obligation, and the expenses of Program Manager incurred in connection therewith
shall be payable by Borrower.

         7. Hardware and  Software.  Borrower  acknowledges  and agrees that all
computer  hardware  and  software  provided to  Borrower  by Program  Manager or
Support  Servicer  in  connection  with the  transactions  contemplated  by this
Agreement  are and shall  remain  the  property  of  Program  Manager or Support
Servicer,  as the case may be, and Borrower  shall  return the same  promptly to
Program Manager or the Support Servicer, as the case may be, upon request.

         8.  Separateness.  Borrower will not permit its assets to be commingled
with  those of  Parent or any  Affiliate  of  Parent.  Borrower  shall  maintain
separate  records and books of account from those of Parent and any Affiliate of
Parent,  and Borrower  shall conduct its business  from an office  separate from
that  of  Parent  or any  Affiliate  of  Parent,  with a  telephone  number  and
stationery which are separate from the telephone number and stationery of Parent
or any Affiliate of Parent (it being understood that,  subject to the foregoing,
the office of  Borrower  may be at the same  location as the office of Parent or
any Affiliate of Parent).  Borrower will conduct its business  solely in its own
name and  will  cause  Parent  and each  Affiliate  of  Parent  to  conduct  its
respective  business  solely  in its  respective  own name so as not to  mislead
others as to the identity of the entity with which those  others are  concerned.
Borrower  will not incur any  direct,  indirect or  overhead  expenses  that are
material for any items shared  between  Borrower and Parent or any  Affiliate of
Parent,  other than shared expenses that will be allocated on a basis reasonably
related to the value of services  rendered or property used, it being understood
that  the  organizational  expenses  of  Borrower  may be paid by  Parent  or an
Affiliate of Parent.  Borrower  will not hold itself out, or permit itself to be
held out, as having  agreed to pay, or as being  liable for, the debts of Parent
or any Affiliate of Parent,  and Borrower shall cause Parent or any Affiliate of
Parent not to hold itself out, or permit itself to be held out, as having agreed
to pay, or as being liable for, the debts of Borrower. Borrower shall not engage
in any transactions  with Parent or any Affiliate of Parent except in connection
with the formation and  capitalization  of Borrower or except in connection with
this  Agreement and the other  Transaction  Documents  including the purchase or
Receivables  from Parent or  Affiliates of Parent.  The financial  statements of
Borrower  shall reflect that it is a  corporation  which is separate from Parent
and each  Affiliate of Parent.  Borrower  shall  observe all  formalities  of an
independent  corporation,  and at all times it shall  maintain  an  "Independent
Director" (as such term is used in the Constituent Documents of Borrower).

         9.  Constituent  Documents.  Borrower  shall not amend its  Constituent
Documents without the prior written consent of Lender.


                               Schedule 5, Page 4

<PAGE>



                                   SCHEDULE 6.
             EDITED FACE VALUE; DETERMINATION OF BORROWING BASE ETC.
                                  (Section 2.2)

         Following  is a  summary  of  certain  steps  which  will be  taken  in
connection with the determination of the Borrowing Base:

         1. From time to time upon the  request of Program  Manager,  but in any
event not less often than on each Weekly Payment Date, Program Manager on behalf
of Lender shall transmit to the Borrower Receivables Information with respect to
all of its existing  Receivables in the Borrowing Base. If any such  Receivables
Information cannot be communicated  through the Data Interface (and prior to the
establishment  of the Data  Interface  pursuant to Section 4.2),  Borrower shall
deliver such Receivables  Information to Program Manager (or a Person designated
by it),  by  messenger  for  same  day  delivery,  if  practicable,  or,  if not
practicable, by Federal Express for next day delivery.

         2. Program  Manager shall,  or shall cause Support  Servicer to, review
and evaluate all information set forth in the Receivables  Information by, among
other  things,   generating   claim  forms  to  be  submitted  to  Obligors  and
communicating with such Obligors.

         3. In connection  with such review and evaluation  Program  Manager and
Borrower  shall  determine  which are the  Eligible  Receivables  to be included
within the Borrowing Base.  Based upon such review and  evaluation,  among other
things,  Program  Manager  shall  cause an  estimate to be made of the amount of
Collections that will be received with respect to such Receivable (such estimate
being  referred to as the "Edited  Face Value" of such  Receivable).  The Edited
Face Value of a Receivable may be changed thereafter by Lender.

         4. Program Manager shall cause the related  Receivables List and one or
more  UCC  financing  statements  covering  the  Receivables  described  on  the
Receivables List to be prepared and delivered to Borrower.

         5. Borrower  shall execute the related UCC financing  statement(s)  and
each page of the related Receivables List.

         6. Borrower shall then return the related  Receivables  List as well as
the UCC financing statement(s) to Program Manager.

         7. Program  Manager shall then review the related  Receivables  List as
well  as the UCC  financing  statement(s)  received  by it  from  Borrower  and,
assuming that such items have been properly  completed by Borrower,  and subject
to the other terms and  conditions  specified  in the  Agreement,  Lender  shall
determine  the  "Borrowing  Base"  which  shall equal not more than 94.7% of the
aggregate  Edited Face Value of all Eligible  Receivables  minus all Collections
theretofore received by Lender on such Eligible Receivables.


                               Schedule 6, Page 1

<PAGE>


                                                                       EXHIBIT A

                                 PROMISSORY NOTE


$1,250,000                                                   September 16, 1996


         FOR VALUE RECEIVED,  the  undersigned,  OAK TREE  RECEIVABLES,  INC., a
Florida  corporation  ("Borrower"),  HEREBY  PROMISES TO PAY to the order of SAM
FUND I, L.P. ( "Lender") on the Maturity  Date, the principal sum of ONE MILLION
TWO HUNDRED FIFTY THOUSAND DOLLARS  ($1,250,000) or, if less, the then aggregate
outstanding principal amount of the Loan.

         Borrower also promises to pay interest on the unpaid  principal  amount
of the Loan from the date of the Loan  until  such  principal  amount is paid in
full, at such interest rates, and payable at such times, as are specified in the
Agreement (as defined below).

         Both  principal  and interest are payable in lawful money of the United
States of America in immediately available funds at the office of Lender at 5821
Lakehurst,  Dallas, Texas 75230, or at such other address as Lender shall notify
Borrower,  for the  account  of the  Lender,  free and  clear  of,  and  without
deduction  for or on account of, any and all present and future  taxes,  levies,
imposts,  deductions,  charges,  withholdings  and all liabilities  with respect
thereto,  all as set forth in the Agreement.  The Loan, and all payments made on
account of  principal  hereof,  will be  recorded  by Lender  and,  prior to any
transfer  hereof,  endorsed on the grid attached  hereto which is a part of this
promissory note.

         This promissory note is the Note referred to in, and is entitled to the
benefits of, the Health Care Receivables Loan and Security Agreement dated as of
September 16, 1996 (as the same may be amended,  restated or otherwise  modified
or supplemented  from time to time, the "Agreement"),  between Borrower,  Lender
and SAM PM, L.P., which Agreement,  among other things,  contains provisions for
acceleration  of the Maturity Date upon the  occurrence of certain stated Events
of Default and also for prepayments on account of principal  hereof prior to the
Maturity Date upon the terms and conditions specified in the Agreement.

         Capitalized  terms used but not defined in this  promissory  note shall
have the meaning assigned to each such term in the Agreement.

         THIS NOTE SHALL BE DEEMED TO BE A CONTRACT  MADE UNDER AND  GOVERNED BY
THE INTERNAL LAWS OF THE STATE OF TEXAS.


                            OAK TREE RECEIVABLES, INC.


                            By______________________
                              Title:


<PAGE>



<TABLE>
<CAPTION>
                                                     LOAN AND PRINCIPAL AMOUNTS

====================================================================================================================================
                     Amount of Loan Made        Amount of Principal Repaid       Unpaid Principal Balance
            -----------------------------------------------------------------------------------------------------------------------
    Date                                                                                                            Notation Made By
<S>                  <C>                        <C>                              <C>                                <C>
- ------------------------------------------------------------------------------------------------------------------------------------

- ------------------------------------------------------------------------------------------------------------------------------------

- ------------------------------------------------------------------------------------------------------------------------------------

- ------------------------------------------------------------------------------------------------------------------------------------

- ------------------------------------------------------------------------------------------------------------------------------------

- ------------------------------------------------------------------------------------------------------------------------------------

- ------------------------------------------------------------------------------------------------------------------------------------

- ------------------------------------------------------------------------------------------------------------------------------------

- ------------------------------------------------------------------------------------------------------------------------------------

- ------------------------------------------------------------------------------------------------------------------------------------

- ------------------------------------------------------------------------------------------------------------------------------------

- ------------------------------------------------------------------------------------------------------------------------------------

- ------------------------------------------------------------------------------------------------------------------------------------

- ------------------------------------------------------------------------------------------------------------------------------------

- ------------------------------------------------------------------------------------------------------------------------------------

- ------------------------------------------------------------------------------------------------------------------------------------

- ------------------------------------------------------------------------------------------------------------------------------------

====================================================================================================================================
</TABLE>



<PAGE>



                                                                     EXHIBIT B-1

                    FORM OF NOTICE TO NON-GOVERNMENT OBLIGORS

                          [Letterhead of the Borrower]


CERTIFIED MAIL;                                                           [Date]
RETURN RECEIPT REQUESTED

[Name and Address
of Obligor]

To Whom it May Concern:

         [The  purpose of this  letter is to notify  you that we have  granted a
Lien to SAM Fund I, L.P. (the "Lender") on receivables with respect to which you
are  obligated to pay us.] You are hereby  irrevocably  directed to make or send
all  Explanations  of Benefits,  remittance  advices and other forms of payment,
including checks, to the following address:

                           Post Office Box [            ]
                           [                ]
                           Reference:

         This direction may not be changed,  modified or rescinded other than by
written instrument executed by the Lender.



                                    OAK TREE RECEIVABLES, INC.


                                    By:________________________________
                                    Name Printed:______________________
                                    Title:_____________________________




         [Not required to be sent if sent under applicable  Receivables Purchase
Agreement.]



<PAGE>



                                                                     EXHIBIT B-2

                      FORM OF NOTICE TO GOVERNMENT OBLIGORS

                            [Letterhead of Borrower]


CERTIFIED MAIL;                                                          [Date]
RETURN RECEIPT REQUESTED

[Name and Address
of Government Obligor]

To Whom it May Concern:

         You are hereby  directed to make or send all  Explanations of Benefits,
remittance  advices  and  other  forms  of  payment,  including  checks,  to the
following address:

                           Post Office Box [            ]
                           [                ]
                           Reference:




                                    OAK TREE RECEIVABLES, INC.


                                    By:________________________________
                                    Name Printed:______________________
                                    Title:_____________________________




         [Not required to be sent if sent under applicable  Receivables Purchase
Agreement.]


<PAGE>


                                                                      EXHIBIT C

                       FORM OF UCC FINANCING STATEMENT(S)/1/


Debtor                                                    Secured Party
Oak Tree Receivables, Inc.                                SAM Fund I, L.P.
_________________________                                 5821 Lakehurst Avenue
_________________________                                 Dallas, Texas  75230
_________________________
_________________________

Tax I.D. No._________________





Description of Collateral

Accounts,  chattel  paper,  instruments,  general  intangibles,  interests in or
claims under any policy of insurance, records, contracts,  Transaction Accounts,
Lock-Boxes all funds and other items on deposit in the Transaction  Accounts and
the Lock-Boxes, and all certificates,  agreements and instruments,  if any, from
time to time evidencing each  Transaction  Account,  each Lock-Box and all funds
and other items on deposit in each  Transaction  Account and each Lock-Box,  and
all proceeds of and amounts  received or receivable  under any of the foregoing;
all as more fully described and specified in Schedule I attached hereto and made
a part hereof.

/X/ Proceeds [/X/ products] of collateral are also covered.

Number of additional sheets presented:  2

Signature of Debtor                       Signature of Secured
                                           Party


OAK TREE RECEIVABLES, INC.                SAM Fund I, L.P., by
                                          SAM Fund General Partner, L.L.C., its
                                          general partner


By____________________                    By____________________
  [Title]                                 [Title]

- ------------------

/1/      This  page  illustrates  information  to be  used in  completing  UCC-1
         financing statements to be filed pursuant to this Agreement.


<PAGE>




                                   SCHEDULE I
                                       to
                   Uniform Commercial Code Financing Statement
                                  on Form UCC-1


Naming:

DEBTOR

OAK TREE RECEIVABLES, INC.
1111 Park Centre Blvd., Suite 340
Miami, Florida  33169

SECURED PARTY

SAM Fund I, L.P.
5821 Lakehurst Avenue
Dallas, Texas  75230


           The financing  statement  (the  "Financing  Statement") to which this
Schedule I is attached and of which it is made a part covers all of the Debtor's
right,  title  and  interest  in, to and under  the  following,  whether  now or
hereafter owned,  existing or arising (herein called the "Collateral"):  (a) all
Receivables,  (b) all Records  relating to such  Receivables,  (c) all Contracts
relating to such  Receivables,  and (d) all proceeds of and amounts  received or
receivable  (including  without  limitation all Collections) under any or all of
the foregoing.

           The  Financing  Statement is being filed to perfect (i) all interests
in the  Collateral  granted to the Secured  Party by the Debtor  pursuant to the
Loan and  Security  Agreement,  and (ii) the  security  interest  granted by the
Debtor to the Secured Party in the Collateral.

           As used herein, the following terms shall have the meanings set forth
below:

           "Collections"  means all funds which are  received by or on behalf of
Debtor,  Secured Party, Program Manager or any other Person from or on behalf of
Obligors in payment of any amount owed with respect to any Receivable.

           "Contract"  means  an  agreement  that  requires  an  Obligor  or  an
Affiliate of Debtor to pay for services  rendered or medical  equipment or goods
sold, leased or rented to individuals by Debtor from time to time.

           "Loan  and  Security   Agreement"  means  that  certain  Health  Care
Receivables Loan and Security Agreement among Debtor, Secured Party, and Program
Manager, as the same may be amended,  amended and restated or otherwise modified
from time to time in accordance with its terms.


<PAGE>

           "Lock-Box" means each Lock-Box  established pursuant to a Transaction
Document.

           "Medical  Records"  means all Records  that  evidence,  or  otherwise
relate to,  health care services  rendered,  or health care goods  provided,  by
Debtor to an individual.

           "Obligor" means, with respect to any Receivable, the Person primarily
or secondarily obligated to make payments on that Receivable.

           "Person"  means  an  individual,   partnership,   corporation,  trust
(including  without limitation a business trust),  joint stock company,  limited
liability company,  unincorporated association, joint venture, government or any
agency or political  subdivision thereof or any other entity,  whether acting in
an individual, fiduciary or other capacity.

           "Program Manager" means SAM PM, L.P. or any successor.

           "Receivable"  means any right of Debtor to payment  from an  Obligor,
whether or not constituting an account,  chattel paper, an instrument, a general
intangible or an interest in or claim under any policy of insurance, arising (a)
from  the  sale,  rental  or lease  of  health  care  goods  (including  without
limitation  medical  equipment) to an individual or the provision of health care
services to an individual (and any services or sales  ancillary  thereto) or (b)
under health care  capitation  and similar  agreements,  in each case  including
without  limitation  all of the rights and remedies of Debtor  relating  thereto
(including  without  limitation  all  guarantees,  security  interests and other
arrangements supporting or securing such a right to payment),  together with any
and all proceeds in any way  derived,  directly or  indirectly,  from any of the
foregoing. The Receivables shall be limited to those listed on Annex A hereto as
supplemented from time to time to replace rejected receivables.

           "Records"  means books,  documents,  papers,  patient files,  patient
health records, and other records and information  (including without limitation
information contained in or on computer programs, disks and tapes) that evidence
Receivables  or are  otherwise  necessary or  desirable  to collect  Receivables
(including without limitation all Medical Records).

           "Transaction Accounts" means each account established pursuant to the
Transaction   Documents   including  the  Cash  Collateral   Account,   and  the
Non-Government  Lock-Box  Account  established  pursuant  to the  Non-Government
Lock-Box Agreement.

           "Transaction Documents" means this Agreement,  the Note and any other
documents or agreements to be executed and delivered in connection herewith.

           "UCC"  means  the  Uniform  Commercial  Code as from  time to time in
effect in the applicable jurisdiction or jurisdictions.



<PAGE>



                                     ANNEX A

                                RECEIVABLES LIST
                                [TO BE ATTACHED]
















<PAGE>



                                                                       EXHIBIT D

              FORM OF LETTER AMENDING BORROWING BASE DETERMINATION

                         [Letterhead of Program Manager]
                                                          ________________, 199_
CERTIFIED MAIL;
RETURN RECEIPT REQUESTED

[Name and Address
of Borrower]

Re:  Borrowing Base Determination

Dear [Borrower]:

           Please  refer  to that  certain  Health  Care  Receivables  Loan  and
Security  Agreement  dated as of  September  16,  1996 (as  heretofore  amended,
amended  and  restated  or  otherwise  modified  called  the "Loan and  Security
Agreement")  among you,  as  Borrower,  SAM Fund I,  L.P.,  as Lender and us, as
Program Manager.  Capitalized  terms used but not otherwise  defined herein have
the  meanings  assigned  to such terms in  Schedule  1 of the Loan and  Security
Agreement.  Articles  I and IX of  the  Agreement  are  hereby  incorporated  by
reference herein with all appropriate changes.

         From and after the date hereof,  the Borrowing  Base shall equal __% of
the  aggregate  Edited  Face  Values  of  the  Eligible  Receivables  minus  the
Collections thereon.

         Please acknowledge your agreement to the foregoing by signing below and
returning  a  signed  copy  of  this  letter  to our  attention  in  the  manner
contemplated by Section 9.2 of the Loan and Security Agreement.

                                   Sincerely,

                                   SAM PM, L.P.

                                   By SAM Holdings General Partner, L.L.C.,
                                   its general partner

                                   By:________________________________
                                      Name Printed:_________________
                                      Title:____________________


Agreed and Acknowledged
 as of the date first
 written above:

[NAME OF BORROWER]

By:________________________________
Name Printed:______________________
Title:_____________________________


<PAGE>


                                                                       EXHIBIT E

                        FORM OF LIMITED POWER OF ATTORNEY

       This  Limited  Power of Attorney is executed  pursuant to the Health Care
Receivables  Loan and Security  Agreement,  dated as of  September  16, 1996 (as
amended, amended and restated or otherwise modified from time to time, the "Loan
and Security Agreement") among OAK TREE RECEIVABLES, INC., as Borrower, SAM Fund
I, L.P., as Lender and SAM PM, L.P., as Program Manager.

       KNOW ALL PERSONS BY THESE PRESENTS, that OAK TREE RECEIVABLES, INC., a
Florida  corporation  ("Borrower") at 1111 Park Centre Blvd.,  Suite 340, Miami,
Florida 33169,  effective  after the occurrence and  continuation of an Event of
Default,  does hereby  nominate,  constitute and appoint SAM PM, L.P.  ("Program
Manager"),  each  officer  and  manager of Program  Manager  and of the  general
partner of the Program Manager from time to time (and each employee and agent of
Program Manager and of the general partner of the Program Manager  authorized by
Program  Manager or the general partner of the Program Manager from time to time
to act hereunder), jointly and each of them severally, together or acting alone,
its true and lawful attorney-in-fact, for Borrower in its name, place and stead,
in the sole discretion of such attorney-in-fact,  to take in Borrower's name, as
applicable  or necessary,  subject to  applicable  law, any and all steps as are
necessary or advisable, in the determination of such attorney-in-fact,  in order
to effectuate and perform any and all of the  transactions  contemplated  by the
Loan and Security  Agreement.  Without  limiting the foregoing,  Borrower hereby
authorizes  such  attorney-in-fact,  subject  to  applicable  law,  to (i) issue
notices to,  prepare,  file and submit proof of claim forms with,  and otherwise
communicate with, Obligors in the name of Borrower,  (ii) ask, demand,  collect,
sue for,  recover,  receive and give acquittance and receipts for moneys due and
to become due with respect to Receivables,  (iii) receive,  endorse,  negotiate,
transfer,  deposit,  collect and otherwise deal with any drafts, checks or other
instruments and documents with respect to Receivables, (iv) prepare, sign, apply
for, and file,  in  Borrower's  name,  any  document  (including  UCC  financing
statements or continuation  statements) to establish  Lender as secured party of
the  Receivables  and any related  property and lien holder with respect to such
Receivables and any related property,  (v) open and establish bank accounts with
Program Manager (and any other person or entity  designated by Program  Manager)
as the only signers on the accounts and the sole beneficiaries of these accounts
for  purposes  of  collecting  Receivables,   (vi)  negotiate,  settle,  adjust,
compromise, extend or renew, discharge and release any or all Receivables, (vii)
prepare, sign and file any claims in Borrower's name with an Obligor or take any
other  action or  institute  any  proceedings  which  Program  Manager  may deem
necessary or desirable for the collection of any of the Receivables or otherwise
to enforce  the rights of Lender  with  respect  to any of the  Receivables  and
(viii) do all other things  necessary or proper to carry out the  administration
and servicing of the Receivables.

       Borrower  hereby  ratifies  and  confirms  the  execution,  delivery  and
performance  (whether  before or after the date  hereof) of the  above-mentioned
instruments,  documents and actions, by Borrower's attorney-in-fact and all that
Borrower's  attorney-in-fact  shall  lawfully  do or cause to be done by  virtue
hereof.

       This Limited  Power of Attorney is coupled with an interest and shall not
be revocable  until such date that Borrower and Program  Manager shall  mutually
designate in writing as the "Final Payout Date".  This Limited Power of Attorney
is transferable and assignable by Program Manager, at its sole discretion.



<PAGE>



       Borrower  hereby agrees that no person or entity dealing with  Borrower's
attorney-in-fact  shall be bound to inquire into such  attorney-in-fact's  power
and authority  hereunder and any such person or entity shall be fully  protected
in relying on such power of authority.

       Capitalized  terms used but not otherwise  defined  herein shall have the
meanings assigned to such terms in the Loan and Security Agreement.

       This  Limited  Power of  Attorney  shall be  governed  and  construed  in
accordance  with the laws of the State of Texas without  reference to principles
of conflicts of law.

       IN WITNESS WHEREOF,  Borrower has executed this Limited Power of Attorney
this ___ day of September, 1996.

                                    OAK TREE RECEIVABLES, INC.


                                    By:________________________________
                                    Name Printed:______________________
                                    Title:_____________________________


Attest:



By:__________________________________
Name Printed:________________________
Title:_______________________________


                                       -2-

<PAGE>





STATE OF FLORIDA  )
                                    SS
COUNTY OF DADE    )

           On September  __, 1996 before me,  ______________________  personally
appeared _____________________ 

o  personally known to me, or

o  proved to me on the basis of satisfactory  evidence  to  be the person  whose
name is subscribed to the within  instrument  and  acknowledged  to me that such
person executed the same in such person's authorized capacity,  and that by such
person's signature on the instrument such person (or entity upon behalf of which
person acted) executed the instrument.





Signature_______________________


[Affix Notary Seal]

My Commission Expires On:

______________________, 199_


                                       -3-

<PAGE>



                                                                       EXHIBIT F

                       FORM OF BORROWING BASE CERTIFICATE

To:      The Lender party to the Loan and Security Agreement
         Described Below


         This Borrowing  Base  Certificate is furnished to that certain Loan and
Security  Agreement dated as of September 16, 1996 (which,  as it may be amended
or modified and in effect from time to time, is herein  called the  "Agreement")
among Oak Tree  Receivables,  Inc.,  as Borrower (the  "Borrower"),  SAM Fund I,
L.P., as Lender and SAM PM, L.P.,  as Program  Manager.  Capitalized  terms used
herein and not otherwise  defined  herein shall have the meanings  attributed to
such terms in the Agreement.

         THE UNDERSIGNED HEREBY CERTIFIES THAT:

         1.       I am the duly elected _________________ of the Borrower.

         2.  Schedule  I  attached   hereto  sets  forth   financial   data  and
computations evidencing the computation of the Borrowing Base, all of which data
and computations are true, complete and correct.

         The foregoing  certifications  are made and delivered  this ____ day of
_____________, 199_.



                         ______________________________
                                     [Name]




<PAGE>


                    SCHEDULE I TO BORROWING BASE CERTIFICATE

                      Calculations as of ____________, 199_


(a)      Edited Face Value of Eligible Receivables                $__________

(b)      Collections Received on such Eligible Receivables        $__________

(c)      Line (a) minus Line (b)                                  $__________

(d)      Line (c) multiplied by ____% (Borrowing Base)            $__________

(e)      Outstanding Principal Balance of Loan                    $__________



                   ===========================================



                                AGREEMENT OF SALE


                              dated August __, 1996

                                     between


            Orthopedic & Sports Therapy Services of Queens, L.P. and

                            Parkside of Queens, Inc.,


                                                       Sellers

                                       and



                       Oak Tree Medical Management, Inc.,


                                                       Purchaser



                   ===========================================




                                       1

<PAGE>



                                AGREEMENT OF SALE


AGREEMENT OF SALE,  made August __,  1996,  among  Orthopedic  & Sports  Therapy
Services of Queens Limited  Partnership,  a Virginia  Limited  Partnership  (the
"L.P."),  having an address at 250 West 100th Street,  New York, NY, Parkside of
Queens, Inc., having an address at 250 West 100th Street, New York, NY ("General
Partner") Gary Danziger,  having an address at 1 Crooked Mile Road, Westport, CT
06880 ("Shareholder/Limited  Partner"), and Oak Tree Medical Management, Inc., a
New York  corporation,  having an address at 2 Gannett  Drive  Suite 215,  White
Plains,  NY 10604  ("Purchaser").  The L.P., the General Partner and the Limited
Partner/Shareholder shall collectively be referred to as "Sellers."


                              W I T N E S S E T H:


WHEREAS,  Purchaser desires to acquire,  and Sellers desire to sell the stock of
the  General  Partner,  the  interests  of the  General  Partner and the Limited
Partner in the L.P., and the assets of the business known as Orthopedic & Sports
Therapy  Services  of Queens,  Limited  Partnership,  such  business  managing a
physical therapy  practice at 163-03 Horace Harding  Expressway,  Flushing,  New
York,  hereinafter  specified,  upon the terms and  conditions  hereinafter  set
forth, and

WHEREAS,  Shareholder is the Limited  Partner of L.P. and the stockholder of the
General Partner.


NOW, THEREFORE,  in consideration of the covenants and agreements  hereafter set
forth,  and other valuable  consideration,  the receipt and sufficiency of which
hereby is acknowledged, the parties hereto agree as follows:


1. Agreement To Sell. Sellers agree to sell,  transfer and deliver to Purchaser,
and Purchaser agrees to purchase,  upon the terms and conditions hereinafter set
forth,  all of the stock of the General  Partner,  the  interests of the General
Partner and the Limited Partner in the L.P., and assets of the business known as
Orthopedic & Sports Therapy Services of Queens, L.P. (the "Stock,  Interests and
Assets"), including without limitation the following:

         (a) the equipment,  patient files, name described in Exhibit A-1 hereto
         and all similar  equipment and general assets  acquired or owned by the
         business on or before the closing date (the "General Assetst");

         (b) the furniture,  fixtures and improvements  described in Exhibit A-2
         hereto and all similar  items  acquired or owned by the  business on or
         before the closing date (the "Improvements");

         (c)  the lease described in Exhibit A-3 hereto (the "Lease");


                                       2

<PAGE>

         (d) the equipment leases, contracts and agreements described in Exhibit
         A-4 hereto (the "Contracts");

         (e) the  Provider  Agreements  described  and  attached  in Exhibit A-5
         hereto (the "Provider Agreements");

         (f) the  bank  accounts,  lines  of  credit  and  safe  deposit  boxes,
         including a list of the persons  authorized to access the bank accounts
         and safe  deposit  boxes,  described  in Exhibit  A-6 hereto (the "bank
         accounts and boxes").

         (g)  the  Accounts  Receivable  listed  in  Exhibit  A-7  (the  "A/R").
         Notwithstanding  anything to the contrary contained herein, there shall
         be  excluded  from the Assets,  all cash on hand and in  Sellers'  bank
         accounts.

2. Purchase  Price.  The purchase price to be paid by Purchaser is Three Hundred
Twenty Five Thousand Dollars ($325,000.00), payable as follows:

         (a) One  Hundred  Twenty Five  Thousand  Dollars  ($125,000.00)  at the
         closing. (B) One Hundred Thousand Dollars  ($100,000.00) at the closing
         by  taking  title  subject  to and  assuming  payment  of the  Existing
         Indebtedness  owed to Calusa  Financial - Medical,  Inc.  identified in
         Exhibit  B  hereto  in said  principal  amount,  and  paying  the  same
         according to the terms thereof.  If on the closing date the outstanding
         principal   balance  of  the   Existing   Indebtedness   is  less  than
         $100,000.00,  the  $125,000.00  to be  paid  at the  closing  by  check
         pursuant  to clause (a) above,  shall be  increased  by the amount that
         such outstanding  principal balance shall be less than $100,000.00.  IN
         NO CASE SHALL  PURCHASER BE  RESPONSIBLE  FOR MORE THAN  $100,000.00 OF
         THIS DEBT.  (c) Twenty  four months  following  closing,  ten  thousand
         (10,000)  shares of common stock of Oak Tree Medical  Systems,  Inc. of
         Miami, FL, will be given to Seller.  Purchaser  guarantees the value to
         be worth at least ten  dollars  ($10) per share,  equaling  One Hundred
         Thousand Dollars ($100,000.00).  If in 24 months from closing the stock
         is worth less than $10 per share, Purchaser will make up the shortfall,
         in cash or stock,  at its option,  i.e. the value of the 10,000  shares
         will equal at least $100,000. If the stock value is higher than $10 per
         share, Seller will realize the gain.

3. The Closing.  The "closing" means the settlement of the obligations of Seller
and Purchaser to each other under this  agreement,  including the payment of the
purchase price to Seller as provided in Article 2 hereof and the delivery of the
closing documents provided for in Article 4 hereof. The closing shall be held at
the offices of Robert P. Borsody, P.C., 250 Park Avenue, New York, NY 10177, and
shall take place within  thirty (30) days of completion  of  Purchaser's  audit,
(the "closing date"), but in no event later than September 30,1996.


4.  Closing  Documents.  At the  closing  Seller  shall  execute  and deliver to
Purchaser:



                                       3
<PAGE>

         (a)  a Bill of Sale substantially in the form of Exhibit C hereto

         (b) an  Assignment  of  the  rights  of the  lessee  under  the  Lease,
         substantially in the form of

         Exhibit Chereto

         (c)  certified  copies  of  resolutions  duly  adopted  by the  Limited
         Partners  and General  Partner of Sellers  authorizing  the sale of the
         Assets and Stock and the  performance  by Sellers of their  obligations
         hereunder

         (d) an opinion of Seller's counsel,  Jerry Shames, Esq. dated as of the
         closing  date,  in  form  and  substance  satisfactory  to  Purchaser's
         counsel, stating such counsel's opinion that: (i) Sellers are a Limited
         Partnership and General Partner duly organized, validly existing and in
         good standing under the laws of New York;  (ii) Sellers have full power
         and authority to enter into this agreement and perform its  obligations
         hereunder;  (iii) the execution and delivery of this  agreement and the
         performance  by Sellers of their  obligations  hereunder have been duly
         authorized by the Limited  Partners and General  Partner of Sellers and
         no further  action or approval is required in order to constitute  this
         agreement  as  the  binding   obligation  of  Seller,   enforceable  in
         accordance with its terms,  except as enforceability  may be limited by
         bankruptcy,  moratorium,  insolvency or other laws affecting creditor's
         rights generally; (iv) the execution and delivery of this agreement and
         the  performance by Sellers of their  obligations  hereunder do not and
         will not violate any provision of the Limited Partnership  Agreement or
         other  governing  instrument  of Sellers;  and (v) except as may be set
         forth in this agreement,  such counsel is not  representing  Sellers or
         Shareholder in any suit, action or proceeding against Sellers which, if
         adversely   determined,   would  prohibit  the   consummation   of  the
         transactions contemplated by this agreement


         (e)   Restrictive Covenant as enumerated in Article Ten (10),


         (f)   Statement   executed  by  Calusa   Financial-Medical,   Inc.  and
         Shareholder  that  Existing  Debt  identified  in  Exhibit  B herein is
         currently paid, to date of closing.  Statement shall also note that any
         payments in arrears have been brought current, to date of closing,

         (g) Statements  executed by  Shareholder/Limited  Partner releasing and
         indemnifying  Purchaser from any and all obligations and liabilities in
         excess of the  principal of the Existing  Debt  identified in Exhibit B
         herein.  A pay-off  letter from Calusa  Financial-Medical,  Inc.  shall
         state the principal balance due.

         (h)  such  other  instruments  and  information  in form and  substance
              satisfactory  to  Purchaser's  attorneys  as may be  necessary  or
              proper to transfer to Purchaser good and  marketable  title to all
              other   ownership   interests  in  the  Stock  and  Assets  to  be
              transferred under this agreement.


                                       4
<PAGE>

At the closing Sellers shall deliver to Purchaser all keys for the business.  If
any keys for the  business or assets are held by  employees  or others,  Sellers
shall identify such individuals,  their addresses and their  relationship to the
Sellers.  Sellers shall do all further acts and things as may be  necessary,  or
reasonably requested by Purchaser,  to consummate the transactions  contemplated
by this  agreement,  including  the  acquisition  of  possession  of the Assets.
Sellers shall advise  Purchaser of, and cause to be delivered to Purchaser,  all
trade  secrets  and  proprietary  information  pertaining  to the  assets of the
business.  After the closing,  Sellers  shall make  available to  Purchaser,  at
reasonable  times upon  reasonable  notice,  access to all books and  records of
Sellers relating to the Stock and Assets;  however, such books and records shall
remain the property of Sellers.

At the closing Purchaser shall execute and deliver to Sellers:

         (a) an  Assumption  of the  obligations  of the lessee under the Lease,
         substantially in the form of Exhibit C hereto

         (b)  an Assumption of the Existing Indebtedness

Except as expressly provided herein,  Purchaser shall not be obligated to pay or
perform any obligations or liabilities of Sellers including  without  limitation
obligations or liabilities of Sellers to its creditors or any legal, accounting,
brokerage or finder's  fees or any taxes or other  expenses in  connection  with
this agreement or the consummation of the transactions contemplated hereby.


5. Closing Adjustments.  The following items shall be apportioned as of midnight
of the day preceding the closing date:

         (a)  rent, including any additional rent, under the Lease

         (b)  taxes and applicable common charges under the lease

         (c)  water and sewer charges

         (d)  utilities, as applicable

         (e)  employee salaries and benefits

         (f)  interest on Existing Indebtedness

Any errors or omissions in computing apportionments shall be corrected after the
closing, with both parties fully cooperating.

6. Waiver Of Bulk Transfer  Requirements.  Purchaser,  at the request of Seller,
hereby  waives  compliance  with the bulk  transfer  provisions  of the  Uniform
Commercial  Code which may be applicable to this  transaction.  Seller agrees to
pay and to  indemnify  Purchaser  against  all claims made by the  creditors  of
Seller, other than the Existing Indebtedness, to which this sale is subject.

                                       5
<PAGE>

At  the  closing,  Seller  shall  deposit  with  the  Escrow  Agent  hereinafter
identified  the sum of  $15,000.00  to be held in  escrow  as  security  for the
payment  of any and all  liabilities  due the  State  of New  York or any  other
governmental  authority for sales taxes.  Said sum shall be released from escrow
and delivered to Seller at such time as a receipt or receipts evidencing payment
of said  liabilities  of Seller,  or  appropriate  releases,  are  delivered  to
Purchaser.


7.  Representations And Warranties Of Sellers.  Sellers represent and warrant to
Purchaser as follows:

         (a)  Sellers  are  a  Limited  Partnership  and  General  Partner  is a
         Corporation duly organized, validly existing under the laws of Virginia
         and New York, respectively, and is duly qualified to do business in New
         York.  Sellers have full power and authority to own its  properties and
         to conduct its business as now carried on, and to carry out and perform
         its undertakings and obligations as provided herein.  The execution and
         delivery  by  Sellers of this  agreement  and the  consummation  of the
         transactions  contemplated  herein  have  been duly  authorized  by the
         Limited  Partners and General  Partner of Sellers and will not conflict
         with or breach any  provision of the Limited  Partnership  Agreement or
         other governing instrument of Sellers, and do not and will not conflict
         with or  result in any  breach of any  condition  or  provision  of, or
         constitute a default under,  or result in the creation or imposition of
         any lien,  charge or encumbrance  upon the Stock or Assets by reason of
         the provisions of any contract,  lien, lease, agreement,  instrument or
         judgment to which  Sellers  are a party,  or which is or purports to be
         binding upon Sellers or which affects or purports to affect the Assets.
         No further  action or approval is required in order to constitute  this
         agreement the binding and enforceable obligation of Sellers.

         (b) No action,  approval,  consent or authorization,  including without
         limitation  any  action,  approval,  consent  or  authorization  of any
         governmental or quasi-governmental agency, commission, board, bureau or
         instrumentality,  is necessary for Sellers to constitute this agreement
         the binding and enforceable  obligation of Sellers or to consummate the
         transactions contemplated hereby.

         (c)  Sellers are the owners of and haves good and  marketable  title to
         the Stock and  Assets,  free of all  liens,  claims  and  encumbrances,
         except as set forth herein.

         (d)  There  are  no  violations,  potential  claims  of  violations  or
         questions of  irregularity  regarding any law or  governmental  rule or
         regulation  pending or, to the best of Sellers'  knowledge,  threatened
         against Sellers or the Assets.  Sellers have complied with all laws and
         governmental  rules and  regulations  applicable to the business or the
         Assets.  Sellers  and  Shareholder  have duly  notified  all  insurance
         carriers  or third party  payors of any  suspected  or known  claims or
         potential claims which may be asserted against Sellers or the Assets.

                                       6
<PAGE>

         (e)  There are no  judgments,  liens,  suits,  actions  or  proceedings
         pending  or,  to the best of  Sellers'  knowledge,  threatened  against
         Seller or the  Assets.  Neither  Seller  nor the Assets are a party to,
         subject to or bound by any  agreement  or any judgment or decree of any
         court,  governmental body or arbitrator which would conflict with or be
         breached by the execution,  delivery or performance of this  agreement,
         or which could  prevent the carrying out of the  transactions  provided
         for in this  agreement,  or which could prevent the use by Purchaser of
         the  Assets  or  adversely  affect  the  conduct  of  the  business  by
         Purchaser.

         (f) Sellers have not entered  into,  and the Assets are not subject to,
         any:  (i)  written  contract or  agreement  for the  employment  of any
         employee of the business;  (ii) contract with any labor union or guild;
         (iii) pension, profit-sharing, retirement, bonus, insurance, or similar
         plan with  respect to any  employee of the  business;  or (iv)  similar
         contract or agreement affecting or relating to the Assets.

         (g) At the time of the closing, there will be no (secured or unsecured)
         creditors   of  Sellers,   other  than  the  holders  of  the  Existing
         Indebtedness, Exhibit B. Such payments on the Existing Indebtedness are
         current and no payments are in arrears.  The general business creditors
         and equipment lessors are listed in Exhibit A-4 attached hereto. Except
         as set forth herein, Shareholder shall be liable for all obligations of
         Sellers which are incurred prior to the closing date.

         (h) The Lease is in full force and effect and  without  any  default by
         Sellers  thereunder.  All  copies of the Lease  provided  by Sellers to
         Purchaser are true and complete copies of the original Lease. The lease
         may be assigned to Purchaser.

         (i)  Identified  Contracts and  Equipment  Leases are in full force and
         effect and without any default by Sellers thereunder. All copies of the
         Contracts  and Leases  provided  by Sellers to  Purchaser  are true and
         complete copies of the original Contracts. Seller is not indebted under
         any  executory  Contracts  or  Leases,  except  as may be set  forth in
         Exhibit A-4 hereto.

         (j) Any and all Provider  Agreements are in full force and effect. True
         and complete  copies of such  Agreements are attached hereto as Exhibit
         A-5.

         (k) Sellers and all its  Partners and  Stockholder  have filed each tax
         return,  including  without  limitation all income,  excise,  property,
         gain, sales, franchise and license tax returns, required to be filed by
         Sellers and all Partners and Stockholder prior to the date hereof. Each
         such return is true,  complete  and  correct,  and  Sellersand  all its
         Partners and Stockholder  have paid all taxes,  assessments and charges
         of any  governmental  authority  required  to be  paid  by it and  have
         created  reserves or made  provision  for all taxes accrued but not yet
         payable.  No  government  is now  asserting,  or to Sellers'  knowledge
         threatening  to assert,  any  deficiency or assessment  for  additional
         taxes or any  interest,  penalties  or fines with respect to Sellers or


                                       7
<PAGE>

         Stockholder.   Sellers'   federal   tax   identification   number   are
         _________________.   Shareholder  shall  hold  Purchaser  harmless  and
         indemnify  purchaser  against all claims for taxes due from and owed by
         sellers or Shareholder.

         (l) The  attached  financial  statements  in  Exhibit  D are  true  and
         accurate.  The financial  statements  fairly and correctly  present the
         financial  position of the Sellers and will so represent such as of the
         date of closing.

          TAt the closing Sellers shall execute and deliver an affidavit setting
forth the above representations as of the date of the closing.


8.  Representations  And  Warranties  Of  Purchaser.  Purchaser  represents  and
warrants to Seller as follows:

         (a)  Purchaser is a corporation  organized  under the laws of New York,
         and is duly  qualified to do business in New York.  Purchaser  has full
         power and  authority  to carry out and  perform  its  undertakings  and
         obligations as provided herein. The execution and delivery by Purchaser
         of this agreement and the consummation of the transactions contemplated
         herein have been duly authorized by the Board of Directors of Purchaser
         and will not conflict with or breach any  provision of the  Certificate
         of Incorporation or Bylaws of Purchaser. No further action or approval,
         corporate  or  otherwise,  is  required  in  order to  constitute  this
         agreement the binding and enforceable obligation of Purchaser.


         (b) No action,  approval,  consent or authorization,  including without
         limitation  any  action,  approval,  consent  or  authorization  of any
         governmental or quasi-governmental agency, commission, board, bureau or
         instrumentality,   is  necessary  for  Purchaser  to  constitute   this
         agreement  the binding and  enforceable  obligation  of Purchaser or to
         consummate the transactions contemplated hereby.




                                       8
<PAGE>

9.  Conditions To Closing.  The  obligations of Purchaser to close hereunder are
subject to the following conditions:


         (a) All of the terms,  covenants and  conditions to be complied with or
         performed  by Sellers  under this  agreement  on or before the  closing
         shall have been  complied  with or performed in all material  respects.

         (b) All representations or warranties of Sellers herein are true in all
         material  respects as of the closing  date.  Such  representations  and
         warranties  shall also survive  closing.  

         (c) Satisfactory results of financial audit.

         (d) All assets are in good working order, as applicable.

         (e) On the  closing  date,  there  shall be no  liens  or  encumbrances
         against the Assets, except as provided for herein.

         (f) The  business of the Sellers will have been  conducted  only in the
         ordinary course of business. No contracts or purchase agreements/orders
         will have been  entered  into,  other  than in the  ordinary  course of
         business.  No expenditures or credit purchases will be made by Sellers,
         other than in the ordinary course of business.

         (g) Sellers,  Shareholder and their  representatives  and advisors will
         supply,  upon  request  by  Purchaser  and  its  representatives,  such
         pertinent  information  as may be  required  by  Purchaser  in order to
         conduct  its due  diligence  survey of  Sellers.  It is agreed that any
         documents or information  provided  hereunder shall be kept in full and
         complete confidence.

         (h) All  payments in the Existing  Indebtedness  are current and not in
         arrears, to date of closing.

Sellers  promptly  shall notify the lessor under the Lease (the "Lessor") of the
proposed assignment of the Lease to Purchaser,  and shall request the consent of
the Lessor  thereto.  Sellers  and  Purchaser  shall  furnish to the Lessor such
information  as may  reasonably be required in connection  with the procuring of
such  consent,  and shall  otherwise  cooperate  in an  effort to  expeditiously
procure such  consent.  If the Lessor shall fail or refuse to grant such consent
in writing  within  thirty days after the date of this  agreement  (the "Outside
Date"),  or shall  require as a condition  of the  granting of such consent that
additional  consideration  be paid to the  Lessor,  which  neither  Sellers  nor
Purchaser are willing to pay, then  Purchaser may terminate this  agreement,  by
written notice to the other delivered within ten days after the Outside Date.

If this  agreement is  terminated  as provided  above in this Article 9, Sellers
shall  return any payments  made by Purchaser on account of the purchase  price,
whereupon all rights of Purchaser  hereunder and to the assets shall  terminate,
and neither Sellers nor Purchaser shall have any further claim against the other
hereunder.


                                       9
<PAGE>

10.  Restrictive  Covenant  Not to Compete.  Seller and Partner  will not, for a
period of four (4) years from the date of closing, either directly or indirectly
engage in the  practice of physical  therapy or related  services,  within lower
Westchester  County,  NY (up to and  including  latitude of White  Plains,  NY),
Fairfield  County,  CT and  within a ten (10) mile  radius of  Seller's  current
address at 163-03 Horrace Harding  Expressway,  Flushing,  NY 11363.  Seller and
Shareholder  shall  execute at closing,  such  documents as will  evidence  this
surviving provision.

11. Indemnification.  Each party hereto, including Shareholder,  shall indemnify
and hold the other parties harmless from and against all liability, claim, loss,
damage or expense, including reasonable attorneys' fees, incurred or required to
be paid by such other  parties by reason of any breach or failure of  observance
or  performance of any  representation,  warranty,  covenant or other  provision
(including  lists and  Exhibits) of this  agreement  by such party.  Shareholder
shall  indemnify  and  hold  Purchaser  harmless  against  all  actions,  suits,
proceedings,  judgments,  costs  and  expenses  incurred  by or  levied  against
Purchaser, due to Seller's or Shareholder's prior acts, omissions, negligence or
other wrongful conduct.

12. Risk Of Loss. The risk of loss to the assets of the business sold hereunder,
until the  closing,  is assumed and shall be borne by  Shareholder  and Sellers.
Sellers agree to keep all of its assets fully insured  against any loss,  either
by fire, theft or casualty,  to the date of closing.  In the event that prior to
closing,  such  Assets are totally or  substantially  damaged by reason of fire,
theft or casualty,  Purchaser may, in its sole discretion,  terminate the within
transaction.  In such  case,  all money  heretofore  deposited  with  Sellers or
Sellers'  representative shall be refunded to Purchaser and the parties shall be
released  from any  further  liability  hereunder.  If the  Purchaser  elects to
consummate this transaction  despite such loss or damage, it may do so by paying
the purchase price set forth herein,  reduced by any insurance proceeds received
by Sellers.

13. Escrow Conditions.  At the closing,  Sellers are to deliver to Jerry Shames,
Attorney  at Law,  having an  address  at 16 Taylor  Place,  Westport,  CT 06880
("Escrow Agent"), the sum of $15,000.00 to be held in escrow as security for the
payment of certain liabilities of Seller, as provided in Article Six (6) above.

Escrow  Agent  shall  hold the  foregoing  $15,000.00  in  accordance  with this
agreement,  or a joint instruction signed by Sellers and Purchaser,  or separate
instructions of like tenor signed by Sellers and Purchaser,  or a final judgment
of a court of competent jurisdiction.

14. Brokerage.  The parties hereto represent and warrant to each other that they
have not dealt with any broker or finder in connection with this agreement other
than the broker,  American  Health  Resources,  LLC with offices at 21394 Marina
Cove  Circle,  Suite  H11,  North  Miami  Beach,  FL 33180 (the  "Broker").  The
Purchaser  shall  be  solely  responsible  for  and  shall  pay at  closing  all
commission,  fees, expenses and charges due or owing to the Broker in connection
with this  transaction,  pursuant to a separate  agreement between the Purchaser
and Broker.  Purchaser  and Seller shall  indemnify,  defend and hold each other
harmless  from  and  against  any  loss,  cost,  expense,   claim  or  liability
(including, without limitation,  reasonable attorney's fees) arising under or in
respect of any claim by any person or entity for any commission,  fee or expense
in respect of 

                                       10
<PAGE>

the transaction  contemplated  by this  Agreement,  where such claim is based in
whole or in part upon any act of the indemnifying party or its  representatives.
The  provisions  of this Article shall survive the  expiration,  termination  or
cancellation of this Agreement, but shall not be construed as a covenant for the
benefit of any third party.

15. The Shareholder.  Shareholder hereby confirms all of the representations and
warranties of Sellers,  and agrees to indemnify and hold Purchaser harmless from
and against  misrepresentation  or breach of any  warranty  by  Sellers,  or any
breach or failure by Sellers to comply with any term,  covenant or  condition of
this  agreement..  Shareholder  represents  and warrants  that he is  theLimited
Partner of L.P. and the sole  Shareholder  of General  Partner,  and that he has
full  power  and  authority  to  carry  out and  perform  his  undertakings  and
obligations  as  provided  herein.  Shareholderagrees  as  aforesaid  to  induce
Purchaser to enter into this agreement.  No action or inaction of Shareholder or
Purchaser,  including the giving of notices,  shall affect,  change or discharge
the obligations of the Purchaser's Guarantor hereunder.

16. Notices. All notices, demands and other communications required or permitted
to be given  hereunder  shall be in  writing  and  shall be  deemed to have been
properly given if delivered by hand or by registered or certified  mail,  return
receipt requested,  with postage prepaid,  to Seller's  attorney,  Jerry Shames,
Esq.  at 16 Taylor  Place,  Westport,  CT 06880,  and to  Purchaser's  attorney,
Frederick C. Veit,  Esq., at 2 Gannett Drive Suite 215, White Plains,  NY 10604.
The  respective  attorneys  for the parties  hereby are  authorized  to give any
notice  required or  permitted  hereunder  and to agree to  adjournments  of the
closing.

17. Survival.  The representations,  warranties and covenant contained herein or
in any document,  instrument,  certificate  or schedule  furnished in connection
herewith  shall  survive the delivery of the Bill of Sale and shall  continue in
full force and effect after the closing, except to the extent waived in writing.

18. Further Assurances. In connection with the transactions contemplated by this
agreement,  the parties  agree to execute and deliver such further  instruments,
and to take such further  actions,  as may be reasonably  necessary or proper to
effectuate and carry out the transactions contemplated in this agreement.

19.  Changes  Must Be In  Writing.  No delay or  omission  by  either  Seller or
Purchaser in exercising any right shall operate as a waiver of such right or any
other right.  This  agreement may not be altered,  amended,  changed,  modified,
waived or terminated  in any respect or  particular  unless the same shall be in
writing  signed by the party to be bound.  No waiver by any party of any  breach
hereunder shall be deemed a waiver of any other or subsequent breach.

20.  Captions And Exhibits.  The captions in this agreement are for  convenience
only and are not to be  considered in construing  this  agreement.  The Exhibits
annexed to this  agreement  are an integral  part of this  agreement,  and where
there is any  reference  to this  agreement  it shall be deemed to include  said
Exhibits.

                                       11
<PAGE>

21.  Governing  Law.  This  agreement  shall be  governed  by and  construed  in
accordance with the laws of the State of New York.

22.  Binding  Effect.  This  agreement  shall be  binding  upon and inure to the
benefit  of  the  parties  hereto  and  their   respective   heirs,   executors,
administrators, successors and assigns.

23. Cancellation. Purchaser reserves the right to cancel this Agreement, without
penalty,  if any  negative  disclosure  is  discovered  regarding  Seller or its
Assets, which would materially affect the value of Seller's Assets.

24. Confidentiality.  Each party acknowledges and agrees that any information or
data it has  acquired  from the  ----------------  other  party,  not  otherwise
properly in the public  domain,  was received in  confidence.  Each party hereto
agrees not to divulge, communicate or disclose, except as may be required by law
or for the performance of this Agreement (including  conducting due diligence or
notifying a party's lender),  or use to the detriment of the disclosing party or
for the  benefit  of any other  person  or  persons,  or misuse in any way,  any
confidential  information of the disclosing  party concerning the subject matter
hereof,  including any trade or business secrets of the disclosing party and any
technical  or business  materials  that are treated by the  disclosing  party as
confidential or proprietary,  including without limitation  information (whether
in  written,  oral  or  machine  readable  form)  concerning:  general  business
operations:  methods of doing business, servicing clients, client relations, and
of pricing and making charge for services and products;  financial  information,
including  costs,  profits  and  sales;  marketing  strategies;  business  forms
developed by or for the disclosing party; names of suppliers, personnel, clients
and potential  clients;  negotiations or other business contacts with suppliers,
personnel,  clients and potential clients;  form and content of bids,  proposals
and contracts; the disclosing party's internal reporting methods;  technical and
business data and documentation; software programs, however embodied; diagnostic
techniques;  and information  obtained by or given to the disclosing party about
or belonging to third parties.


                                       12
<PAGE>


IN WITNESS  WHEREOF,  the parties have  executed  this  agreement the date first
above written.

                                                 By_________________________
                                                         Gary Danziger


ORTHOPEDIC & SPORTS THERAPY SERVICES OF QUEENS, L.P.
   ATTEST:
                                                 By ________________________
                                                         General Partner


   By ________________________
      Managing Limited Partner


PARKSIDE  OF QUEENS, INC.
   ATTEST:
                                                  By ________________________
                                                            President


OAK TREE MEDICAL MANAGEMENT, INC.

   ATTEST:
                                                  By ________________________
                                                            President

   By ____________________
          Secretary


Jerry  Shames,  Attorney at Law,  hereby  executes  this  agreement for the sole
purpose of agreeing to serve as Escrow Agent in accordance  with the  provisions
of Article 13 of this agreement.



                                                -------------------------------
                                                  Jerry Shames, Attorney at Law



                                       13
<PAGE>


STATE OF NEW YORK, COUNTY OF                                             , SS.:


         On  the  ____  day  of  August,   1996,   before  me  personally   came
______________________________________,  to me known,  who being duly sworn, did
depose and say that he resides at  _____________________________________________
______________________________________________________________;  that  he is the
_______________________________________________________________________________
of Orthopedic & Sports Therapy Services of Queens, L.P., the Limited Partnership
and the  ______________________________  of Parkside of Queens, Inc. the General
Partner described herein and which executed the foregoing Agreement of Sale; and
that he signed his name thereto by the order of the Limited and General Partners
of the Limited Partnership.



                                            -------------------------------
                                              Notary Public
                                               My commission expires on


STATE OF NEW YORK, COUNTY OF                                            , SS.:


         On the day of August, 1996, before me personally came Gary Danziger, to
me  known to be the  individual  described  in and who  executed  the  foregoing
Agreement of Sale, and acknowledged that he executed said Agreement of Sale.


                                               -------------------------------
                                                 Notary Public
                                                 My commission expires on


STATE OF NEW YORK, COUNTY OF                                              , SS.:


         On  the  ____  day  of  August,   1996,   before  me  personally   came
______________________________________,  to me known,  who being duly sworn, did
depose and say that he resides at  _____________________________________________
______________________________________________________________;  that  he is the
President of Oak Tree Medical Management, Inc., the corporation described in and
which  executed the  foregoing  Agreement  of Sale;  and that he signed his name
thereto by the order of the board of directors of the said corporation.

 
                                              -------------------------------
                                              Notary Public
                                              My commission expires on



                                       14
<PAGE>

                                   EXHIBIT A-1

                          Equipment and General Assets






                                       15
<PAGE>


                                   EXHIBIT A-2

                                  Improvements





                                       16
<PAGE>



                                   EXHIBIT A-3

                                    The Lease





                                       17
<PAGE>

                                   EXHIBIT A-4

                         Contracts and Equipment Leases



Indebtedness under executory contracts or leases:





                                       18
<PAGE>



                                   EXHIBIT A-5

                               Provider Agreements


                                       19
<PAGE>


                                   EXHIBIT A-6


             Bank Accounts, Safe Deposit Boxes, Lines of Credit and
                        Persons Authorized to Access Each



                                       20
<PAGE>


                                   EXHIBIT A-7

                               ACCOUNTS RECEIVABLE




                                       21
<PAGE>



                                    EXHIBIT B

        Existing Indebtedness, Collateral, Copies of Security Agreements






                                       22
<PAGE>


                   ===========================================



                               ASSIGNMENT OF LEASE


                             dated August ___, 1996

                                      from

              Orthopedic & Sports Therapy Services of Queens, L.P.

                                                                       Seller

                                       to

                       Oak Tree Medical Management, Inc.,

                                                                       Purchaser



                   ===========================================


                                       23
<PAGE>


                                    EXHIBIT C


                               ASSIGNMENT OF LEASE

         KNOW THAT,  for valuable  consideration,  Orthopedic  & Sports  Therapy
Services of Queens,  L.P.,  a Virginia  Limited  Partnership,  having an address
at_____________________________   ("Assignor")  hereby  assigns  unto  Oak  Tree
Medical Management, Inc., a New York corporation, having an address at 2 Gannett
Drive  Suite 215,  White  Plains,  NY 10604  ("Assignee")  all right,  title and
interest of Assignor as lessee under the following lease:

Banle Associates to Orthopedic & Sports Therapy  Services of Queens,  L.P. Dated
September 14, 1992.

         TO HAVE AND TO HOLD said lease unto Assignee and the heirs,  executors,
administrators,  successors  and  assigns  of  Assignee  from and after the date
hereof,  for the rest of the term of said lease,  as the same may be modified or
extended.

         Assignee hereby assumes and agrees to perform,  from and after the date
hereof, all of the terms, covenants and conditions of said lease to be performed
by the lessee thereunder.

         IN WITNESS  WHEREOF,  Assignor and  Assignee  have duly  executed  this
assignment and assumption on August ___, 1996.


ORTHOPEDIC & SPORTS THERAPY SERVICES OF QUEENS, L.P.
   ATTEST:
                                                    By ________________________
                                                           General Partner

   By ____________________
         Managing Partner


OAK TREE MEDICAL MANAGEMENT, INC.
   ATTEST:
                                                    By ________________________
                                                            President

   By ____________________
           Secretary





                                       24
<PAGE>


STATE OF NEW YORK, COUNTY OF                                  , SS.:

         On  the  ______  day  of  August,   1996,  before  me  personally  came
_______________________________________________________________________,  to  me
known,   who  being  duly  sworn,   did  depose  and  say  that  he  resides  at
_____________________________________________
_______________________________________________________________________; that he
is the ______________________ of Orthopedic & Sports Therapy Services of Queens,
L.P., the Limited Partnership  described herein and which executed the foregoing
instrument;  and that he signed his name thereto by the order of the Limited and
General Partners of the Limited Partnership.



                                               -------------------------------
                                                          Notary Public
                                                   My commission expires on



STATE OF NEW YORK, COUNTY OF                                           , SS.:

         On  the  ______  day  of  August,   1996,  before  me  personally  came
_________________________________  , to me known,  who  being  duly  sworn,  did
depose and say that he resides at ________________________________________; that
he is the  President  of Oak Tree  Medical  Management,  Inc.,  the  corporation
described herein and which executed the foregoing instrument; and that he signed
his name thereto by the order of the board of directors of the said corporation.


                                               -------------------------------
                                                          Notary Public
                                                   My commission expires on


         The  undersigned,  as lessor under the lease described in the foregoing
assignment of lease, hereby consents to said assignment of the lease.



                                                 -------------------------------
                                                         Banle Associates





                                       25
<PAGE>

                                    EXHIBIT D


                              FINANCIAL STATEMENTS




                                       26


                   ===========================================



                                AGREEMENT OF SALE


                              dated August __, 1996

                                     between

                    Parkside Physical Therapy Services, P.C.

                                     Seller

                                       and


                           New Medical Practice, P.C.

                                    Purchaser



                   ===========================================

<PAGE>

                                AGREEMENT OF SALE


AGREEMENT  OF SALE,  made  August __,  1996,  among  Parkside  Physical  Therapy
Services,  P.C.,  a New York  corporation,  having an  address at 250 West 100th
Street, New York, NY ("Seller"),  Gary Danziger,  having an address at 1 Crooked
Mile Road, Westport, CT 06880 ("Shareholder"), and New Medical Practice, P.C., a
New York professional  corporation,  having an address at 2 Gannett Drive, Suite
215, White Plains, NY 10604 ("Purchaser").


                              W I T N E S S E T H:

WHEREAS, Purchaser desires to acquire, and Seller desires to sell, the assets of
the business  known as Parkside  Physical  Therapy  Services,  P.C.  hereinafter
specified, upon the terms and conditions hereinafter set forth, and

WHEREAS, Shareholder is the shareholder of Seller.

NOW, THEREFORE,  in consideration of the covenants and agreements  hereafter set
forth,  and other valuable  consideration,  the receipt and sufficiency of which
hereby is acknowledged, the parties hereto agree as follows:

1. Agreement To Sell. Seller agrees to sell,  transfer and deliver to Purchaser,
and Purchaser agrees to purchase,  upon the terms and conditions hereinafter set
forth,  all of the assets of the  business  known as Parkside  Physical  Therapy
Services, P.C. (the "Assets"), including without limitation the following:


         (a) the equipment,  name, patient files and general assets described in
         Exhibit A-1 hereto and all similar  equipment  acquired or owned by the
         business on or before the closing date (the "General Assets");

         (b) the furniture,  fixtures and improvements  described in Exhibit A-2
         hereto and all similar  items  acquired or owned by the  business on or
         before the closing date (the "Improvements");

         (c) the lease described in Exhibit A-3 hereto (the "Lease");


                                       1
<PAGE>

         (d) the equipment leases, contracts and agreements described in Exhibit
         A-4 hereto (the "Contracts");

         (e) the  Provider  Agreements  described  and  attached  in Exhibit A-5
         hereto (the "Provider Agreements");

         (f) the  bank  accounts,  lines  of  credit  and  safe  deposit  boxes,
         including a list of the persons  authorized to access the bank accounts
         and safe  deposit  boxes,  described  in Exhibit  A-6 hereto (the "Bank
         accounts and Boxes").

         (g) the accounts receivable listed in Exhibit A-7 hereto (the "Accounts
         Receivable").

Notwithstanding  anything  to the  contrary  contained  herein,  there  shall be
excluded from the Assets, all cash on hand and in Seller's bank accounts.

2.  Purchase  Price.  The purchase  price to be paid by Purchaser is Two Hundred
Fifty Thousand Dollars ($250,000.00), payable as follows:

          (a)  Two Hundred Fifty Thousand Dollars ($250,000.00) at the closing.

3. The Closing.  The "closing" means the settlement of the obligations of Seller
and Purchaser to each other under this  agreement,  including the payment of the
purchase price to Seller as provided in Article 2 hereof and the delivery of the
closing documents provided for in Article 4 hereof. The closing shall be held at
the offices of Robert P. Borsody, P.C., 250 Park Avenue, New York, NY 10177, and
shall take place within  thirty (30) days of completion  of  Purchaser's  audit,
(the "closing date"), but in no event later than September 30, 1996.

4.  Closing  Documents.  At the  closing  Seller  shall  execute  and deliver to
Purchaser:

         (a) a Bill of Sale

         (b) an  Assignment  of  the  rights  of the  lessee  under  the  Lease,
         substantially in the form of Exhibit C hereto

         (c)  certified  copies  of  resolutions  duly  adopted  by the Board of
         Directors and shareholder of Seller  authorizing the sale of the Assets
         and the performance by Seller of its obligations hereunder

         (d) an opinion of Seller's counsel,  Jerry Shames, Esq. dated as of the
         closing  date,  in  form  and  substance  satisfactory  to  Purchaser's
         counsel,   stating  such  counsel's  opinion  that:  (i)  Seller  is  a
         corporation duly organized, validly existing and in good standing under
         the laws of New  York;  (ii)  Seller  has  full  power  and  authority,
         corporate and  otherwise,  to enter into this agreement and perform its
         obligations  hereunder;  (iii)  the  execution  and  delivery  of  this
         agreement and the  performance by Seller of its  obligations  hereunder
         have been duly  authorized by the Board of Directors and shareholder of
         Seller  and no  further  action or  approval  is  required  in order to


                                       2
<PAGE>

         constitute  this  agreement  as  the  binding   obligation  of  Seller,
         enforceable in accordance with its terms,  except as enforceability may
         be  limited  by  bankruptcy,   moratorium,  insolvency  or  other  laws
         affecting creditor's rights generally;  (iv) the execution and delivery
         of this  agreement  and the  performance  by Seller of its  obligations
         hereunder do not and will not violate any provision of the  Certificate
         of  Incorporation  or Bylaws of  Seller;  and (v)  except as may be set
         forth in this agreement, such counsel is not representing Seller in any
         suit,   action  or  proceeding   against  Seller  which,  if  adversely
         determined,   would  prohibit  the  consummation  of  the  transactions
         contemplated by this agreement

         (e) Restrictive Covenant as enumerated in Article Ten (10).

         (f) such  other  instruments  and  information  in form  and  substance
         satisfactory to Purchaser's  attorneys as may be necessary or proper to
         transfer to Purchaser good and marketable  title to all other ownership
         interests in the Assets to be transferred under this agreement.

At the closing  Seller shall deliver to Purchaser all keys for the business.  If
any keys for the  business  or assets are held by  employees  or others,  Seller
shall identify such individuals,  their addresses and their  relationship to the
Seller.  Seller  shall do all further  acts and things as may be  necessary,  or
reasonably requested by Purchaser,  to consummate the transactions  contemplated
by this agreement, including the acquisition of possession of the Assets. Seller
shall advise  Purchaser  of, and cause to be delivered to  Purchaser,  all trade
secrets and  proprietary  information  pertaining to the assets of the business.
After the closing, Seller shall make available to Purchaser, at reasonable times
upon  reasonable  notice,  access to all books and records of Seller relating to
the Assets; however, such books and records shall remain the property of Seller.

At the closing Purchaser shall execute and deliver to Seller:

         (a) an  Assumption  of the  obligations  of the lessee under the Lease,
         substantially in the form of Exhibit C hereto

Except as expressly provided herein,  Purchaser shall not be obligated to pay or
perform any obligations or liabilities of Seller  including  without  limitation
obligations or liabilities of Seller to its creditors or any legal,  accounting,
brokerage or finder's  fees or any taxes or other  expenses in  connection  with
this agreement or the consummation of the transactions contemplated hereby.

5. Closing Adjustments.  The following items shall be apportioned as of midnight
of the day preceding the closing date:

         (a) rent, including any additional rent, under the Lease

         (b) taxes and applicable common charges under the lease

         (c) water and sewer charges


                                       3
<PAGE>

         (d) utilities, as applicable

         (e) employee salaries and benefits

Any errors or omissions in computing apportionments shall be corrected after the
closing, with both parties fully cooperating.

6. Waiver Of Bulk Transfer  Requirements.  Purchaser,  at the request of Seller,
hereby  waives  compliance  with the bulk  transfer  provisions  of the  Uniform
Commercial  Code which may be applicable to this  transaction.  Seller agrees to
pay and to  indemnify  Purchaser  against  all claims made by the  creditors  of
Seller, other than the Existing Indebtedness to which this sale is subject.

At  the  closing,  Seller  shall  deposit  with  the  Escrow  Agent  hereinafter
identified the sum of $5,000.00 to be held in escrow as security for the payment
of any and all liabilities  due the State of New York or any other  governmental
authority for sales taxes.  Said sum shall be released from escrow and delivered
to Seller  at such time as a receipt  or  receipts  evidencing  payment  of said
liabilities of Seller, or appropriate releases, are delivered to Purchaser.

7.  Representations And Warranties Of Seller.  Seller represents and warrants to
Purchaser as follows:

         (a) Seller is a corporation  duly organized and validly  existing under
         the laws of New York, and is duly qualified to do business in New York.
         Seller  has full  power  and  authority  to own its  properties  and to
         conduct  its  business  as now carried on, and to carry out and perform
         its undertakings and obligations as provided herein.  The execution and
         delivery  by  Seller  of this  agreement  and the  consummation  of the
         transactions contemplated herein have been duly authorized by the Board
         of  Directors  of  Seller  and will not  conflict  with or  breach  any
         provision of the Certificate of Incorporation or Bylaws of Seller,  and
         do not and  will not  conflict  with or  result  in any  breach  of any
         condition or provision of, or constitute a default under,  or result in
         the creation or imposition of any lien,  charge or encumbrance upon the
         Assets  by reason  of the  provisions  of any  contract,  lien,  lease,
         agreement,  instrument or judgment to which Seller is a party, or which
         is or purports to be binding  upon Seller or which  affects or purports
         to affect the  Assets.  No further  action or  approval,  corporate  or
         otherwise,  is  required  in order to  constitute  this  agreement  the
         binding and enforceable obligation of Seller.

         (b) No action,  approval,  consent or authorization,  including without
         limitation  any  action,  approval,  consent  or  authorization  of any
         governmental or quasi-governmental agency, commission, board, bureau or
         instrumentality,  is necessary for Seller to constitute  this agreement
         the binding and  enforceable  obligation of Seller or to consummate the
         transactions contemplated hereby.

         (c)  Seller  is the owner of and has good and  marketable  title to the
         Assets, free of all liens, claims and encumbrances, except as set forth
         herein.


                                       4
<PAGE>

         (d)  There  are  no  violations,  potential  claims  of  violations  or
         questions of  irregularity  regarding any law or  governmental  rule or
         regulation  pending or, to the best of Seller's  knowledge,  threatened
         against  Seller or the Assets.  Seller has  complied  with all laws and
         governmental  rules and  regulations  applicable to the business or the
         Assets.  Seller has duly notified all insurance carriers or third party
         payors of any  suspected or known claims or potential  claims which may
         be asserted against Seller or the Assets.

         (e)  There are no  judgments,  liens,  suits,  actions  or  proceedings
         pending  or,  to the best of  Seller's  knowledge,  threatened  against
         Seller or the  Assets.  Neither  Seller  nor the Assets are a party to,
         subject to or bound by any  agreement  or any judgment or decree of any
         court,  governmental body or arbitrator which would conflict with or be
         breached by the execution,  delivery or performance of this  agreement,
         or which could  prevent the carrying out of the  transactions  provided
         for in this  agreement,  or which could prevent the use by Purchaser of
         the  Assets  or  adversely  affect  the  conduct  of  the  business  by
         Purchaser.

         (f) Seller has not  entered  into,  and the Assets are not  subject to,
         any:  (i)  written  contract or  agreement  for the  employment  of any
         employee of the business;  (ii) contract with any labor union or guild;
         (iii) pension, profit-sharing, retirement, bonus, insurance, or similar
         plan with  respect to any  employee of the  business;  or (iv)  similar
         contract or agreement affecting or relating to the Assets.

         (g) At the time of the closing, there will be no (secured or unsecured)
         creditors   of  Seller,   other  than  the  holders  of  the   Existing
         Indebtedness,  Exhibit B and other than the general business  creditors
         and equipment lessors as listed in Exhibit A-4 attached hereto.  Except
         as set forth  herein,  Seller and  Shareholder  shall be liable for all
         obligations of Seller which are incurred prior to the closing date.

         (h) The Lease is in full force and effect and  without  any  default by
         Seller  thereunder.  All  copies  of the  Lease  provided  by Seller to
         Purchaser are true and complete copies of the original Lease.
         The lease may be assigned to Purchaser.

         (i)  Identified  Contracts and  Equipment  Leases are in full force and
         effect and without any default by Seller thereunder.  All copies of the
         Contracts  and  Leases  provided  by Seller to  Purchaser  are true and
         complete copies of the original Contracts. Seller is not indebted under
         any  executory  Contracts  or  Leases,  except  as may be set  forth in
         Exhibit A-4 hereto.

         (j) Any and all Provider  Agreements are in full force and effect. True
         and complete  copies of such  Agreements are attached hereto as Exhibit
         A-5.

         (k) Seller has filed each tax return,  including without limitation all
         income,  excise,  property,  gain,  sales,  franchise  and  license tax
         returns,  required to be filed by Seller prior to the date hereof. Each
         such  return is true,  complete  and  correct,  and Seller has paid all
         taxes,  assessments and charges of any governmental  authority required
         to be paid by it and has  created  reserves or made  provision  for all
         taxes accrued but not yet payable.  No 

                                       5
<PAGE>

         government is now asserting,  or to Seller's  knowledge  threatening to
         assert,  any  deficiency  or  assessment  for  additional  taxes or any
         interest,  penalties or fines with respect to Seller.  Seller's federal
         tax identification number is _________________.  Seller and Shareholder
         shall hold  Purchaser  harmless  and  indemnify  Purchaser  against all
         claims for taxes due from and owed by Seller or Shareholder.

         (l) The  attached  financial  statements  in  Exhibit  D are  true  and
         accurate.  The financial  statements  fairly and correctly  present the
         financial  position of the Seller and will so represent  such as of the
         date of closing.

At the closing  Seller shall execute and deliver an affidavit  setting forth the
above representations as of the date of the closing.

8.  Representations  And  Warranties  Of  Purchaser.  Purchaser  represents  and
warrants to Seller as follows:

         (a)  Purchaser is a corporation  organized  under the laws of New York,
         and is duly  qualified to do business in New York.  Purchaser  has full
         power and  authority  to carry out and  perform  its  undertakings  and
         obligations as provided herein. The execution and delivery by Purchaser
         of this agreement and the consummation of the transactions contemplated
         herein have been duly authorized by the Board of Directors of Purchaser
         and will not conflict with or breach any  provision of the  Certificate
         of Incorporation or Bylaws of Purchaser. No further action or approval,
         corporate  or  otherwise,  is  required  in  order to  constitute  this
         agreement the binding and enforceable obligation of Purchaser.

         (b) No action,  approval,  consent or authorization,  including without
         limitation  any  action,  approval,  consent  or  authorization  of any
         governmental or quasi-governmental agency, commission, board, bureau or
         instrumentality,   is  necessary  for  Purchaser  to  constitute   this
         agreement  the binding and  enforceable  obligation  of Purchaser or to
         consummate the transactions contemplated hereby.


9.  Conditions To Closing.  The  obligations of Purchaser to close hereunder are
subject to the following conditions:

         (a) All of the terms,  covenants and  conditions to be complied with or
         performed by Seller under this agreement on or before the closing shall
         have been complied with or performed in all material respects.  

         (b) All  representations or warranties of Seller herein are true in all
         material  respects as of the closing  date.  Such  representations  and
         warranties shall also survive closing.

         (c) Satisfactory results of financial audit.

         (d) All assets are in good working order, as applicable.

         (e) On the  closing  date,  there  shall be no  liens  or  encumbrances
         against the Assets, except as provided for herein.

                                       6
<PAGE>

         (f) The  business  of the Seller will have been  conducted  only in the
         ordinary course of business. No contracts or purchase agreements/orders
         will have been  entered  into,  other  than in the  ordinary  course of
         business.  No expenditures or credit  purchases will be made by Seller,
         other than in the ordinary course of business.

         (g) Seller,  Shareholder  and their  representatives  and advisors will
         supply,  upon  request  by  Purchaser  and  its  representatives,  such
         pertinent  information  as may be  required  by  Purchaser  in order to
         conduct  its due  diligence  survey of  Seller.  It is agreed  that any
         documents or information  provided  hereunder shall be kept in full and
         complete confidence

Seller  promptly  shall notify the lessor under the Lease (the  "Lessor") of the
proposed assignment of the Lease to Purchaser,  and shall request the consent of
the  Lessor  thereto.  Seller and  Purchaser  shall  furnish to the Lessor  such
information  as may  reasonably be required in connection  with the procuring of
such  consent,  and shall  otherwise  cooperate  in an  effort to  expeditiously
procure such consent.  Purchaser  agrees to pay to the Lessor an amount of up to
$4,012.50 in  consideration  for the consent of Lessor to the  assignment of the
Lease to Purchaser.  If the Lessor shall fail or refuse to grant such consent in
writing  within  thirty  days  after the date of this  agreement  (the  "Outside
Date"),  or shall  require as a condition  of the  granting of such consent that
additional  consideration  be paid to the  Lessor  (in  excess of the  aforesaid
$4,012.50 to be paid by Purchaser) which neither Seller nor Purchaser is willing
to pay, then  Purchaser may terminate this  agreement,  by written notice to the
other delivered within ten days after the Outside Date.

If this  agreement  is  terminated  as provided  above in this Article 9, Seller
shall  return any payments  made by Purchaser on account of the purchase  price,
whereupon all rights of Purchaser hereunder and to the business shall terminate,
and neither Seller nor Purchaser  shall have any further claim against the other
hereunder.

10. Restrictive Covenant Not to Compete.  Seller and Shareholder will not, for a
period of four (4) years from the date of closing, either directly or indirectly
engage in the  practice of physical  therapy or related  services,  within lower
Westchester  County,  NY (up to and  including  latitude of White  Plains,  NY),
Fairfield  County,  CT and  within a ten (10) mile  radius of  Seller's  current
address at 250 West 100th  Street,  New York, NY 10025.  Seller and  Shareholder
shall  execute at  closing,  such  documents  as will  evidence  this  surviving
provision.

11. Indemnification.  Each party hereto, including Shareholder,  shall indemnify
and hold the other parties harmless from and against all liability, claim, loss,
damage or expense, including reasonable attorneys' fees, incurred or required to
be paid by such other  parties by reason of any breach or failure of  observance
or  performance of any  representation,  warranty,  covenant or other  provision
(including  lists and  Exhibits) of this  agreement by such party.  Seller shall
indemnify and hold Purchaser harmless against all actions,  suits,  proceedings,
judgments,  costs and expenses incurred by or levied against  Purchaser,  due to
Seller's or Shareholder's  prior acts,  omissions,  negligence or other wrongful
conduct.

12. Risk Of Loss. The risk of loss to the assets of the business sold hereunder,
until the  closing,  is assumed and shall be borne by Seller.  Seller  agrees to
keep all of its assets fully insured against any 


                                       7
<PAGE>

loss,  either by fire, theft or casualty,  to the date of closing.  In the event
that prior to  closing,  such  Assets are  totally or  substantially  damaged by
reason  of fire,  theft or  casualty,  Purchaser  may,  in its sole  discretion,
terminate the within transaction.  In such case, all money heretofore  deposited
with Seller or Seller's  representative  shall be refunded to Purchaser  and the
parties shall be released from any further liability hereunder. If the Purchaser
elects to consummate this transaction  despite such loss or damage, it may do so
by paying the purchase price set forth herein, reduced by any insurance proceeds
received by Seller.

13.  Escrow  Conditions.  At the closing,  Seller is to deliver to Jerry Shames,
Attorney  at Law,  having an  address  at 16 Taylor  Place,  Westport,  CT 06880
("Escrow Agent"),  the sum of $5,000.00 to be held in escrow as security for the
payment of certain liabilities of Seller, as provided in Article Six (6) above.

Escrow  Agent  shall  hold the  foregoing  $5,000.00  in  accordance  with  this
agreement,  or a joint instruction  signed by Seller and Purchaser,  or separate
instructions  of like tenor signed by Seller and Purchaser,  or a final judgment
of a court of competent jurisdiction.

14. Brokerage.  The parties hereto represent and warrant to each other that they
have not dealt with any broker or finder in connection with this agreement other
than the broker,  American  Health  Resources,  LLC with offices at 21394 Marina
Cove  Circle,  Suite  H11,  North  Miami  Beach,  FL 33180 (the  "broker").  The
Purchaser  shall  be  solely  responsible  for  and  shall  pay at  closing  all
commission,  fees, expenses and charges due or owing to the Broker in connection
with this  transaction,  pursuant to a separate  agreement between the Purchaser
and Broker.  Purchaser  and Seller shall  indemnify,  defend and hold each other
harmless  from  and  against  any  loss,  cost,  expense,   claim  or  liability
(including, without limitation,  reasonable attorney's fees) arising under or in
respect of any claim by any person or entity for any commission,  fee or expense
in respect of the transaction  contemplated by this Agreement,  where such claim
is  based in whole  or in part  upon  any act of the  indemnifying  party or its
representatives.  The  provisions of this Article shall survive the  expiration,
termination or cancellation  of this Agreement,  but shall not be construed as a
covenant for the benefit of any third party.

15. The Shareholder.  Shareholder hereby confirms all of the representations and
warranties of Seller,  and agrees to indemnify and hold Purchaser  harmless from
and against misrepresentation or breach of any warranty by Seller, or any breach
or failure by Seller to comply  with any term,  covenant  or  condition  of this
agreement,  as  fully  as if  Shareholder  was the  Seller  herein.  Shareholder
represents and warrants that he is the  shareholder  of Seller,  and that he has
full  power  and  authority  to  carry  out and  perform  his  undertakings  and
obligations  as  provided  herein.  Shareholder  agrees as  aforesaid  to induce
Purchaser  to enter  into this  agreement.  No action or  inaction  of Seller or
Purchaser,  including the giving of notices,  shall affect,  change or discharge
the obligations of the Purchaser's Guarantor hereunder.

16. Notices. All notices, demands and other communications required or permitted
to be given  hereunder  shall be in  writing  and  shall be  deemed to have been
properly given if delivered by hand or by registered or certified  mail,  return
receipt requested,  with postage prepaid,  to Seller's  attorney,  Jerry Shames,
Esq.  at 16 Taylor  Place,  Westport,  CT 06880,  and to  Purchaser's  attorney,
Frederick C. Veit,  



                                       8
<PAGE>

Esq., at 21 Gordon Avenue,  Briarcliff Manor, NY 10510. The respective attorneys
for the parties hereby are  authorized to give any notice  required or permitted
hereunder and to agree to adjournments of the closing.

17. Survival.  The representations,  warranties and covenant contained herein or
in any document,  instrument,  certificate  or schedule  furnished in connection
herewith  shall  survive the delivery of the Bill of Sale and shall  continue in
full force and effect after the closing, except to the extent waived in writing.

18. Further Assurances. In connection with the transactions contemplated by this
agreement,  the parties  agree to execute and deliver such further  instruments,
and to take such further  actions,  as may be reasonably  necessary or proper to
effectuate and carry out the transactions contemplated in this agreement.

19.  Changes  Must Be In  Writing.  No delay or  omission  by  either  Seller or
Purchaser in exercising any right shall operate as a waiver of such right or any
other right.  This  agreement may not be altered,  amended,  changed,  modified,
waived or terminated  in any respect or  particular  unless the same shall be in
writing  signed by the party to be bound.  No waiver by any party of any  breach
hereunder shall be deemed a waiver of any other or subsequent breach.

20.  Captions And Exhibits.  The captions in this agreement are for  convenience
only and are not to be  considered in construing  this  agreement.  The Exhibits
annexed to this  agreement  are an integral  part of this  agreement,  and where
there is any  reference  to this  agreement  it shall be deemed to include  said
Exhibits.

21.  Governing  Law.  This  agreement  shall be  governed  by and  construed  in
accordance with the laws of the State of New York.

22.  Binding  Effect.  This  agreement  shall be  binding  upon and inure to the
benefit  of  the  parties  hereto  and  their   respective   heirs,   executors,
administrators, successors and assigns.

23. Cancellation. Purchaser reserves the right to cancel this Agreement, without
penalty,  if any  negative  disclosure  is  discovered  regarding  Seller or its
Assets, which would materially affect the value of Seller's Assets.

24. Confidentiality.  Each party acknowledges and agrees that any information or
data it has acquired from the other party, not otherwise  properly in the public
domain,  was received in  confidence.  Each party hereto  agrees not to divulge,
communicate or disclose, except as may be required by law or for the performance
of this  Agreement  (including  conducting  due diligence or notifying a party's
lender),  or use to the detriment of the disclosing  party or for the benefit of
any other person or persons, or misuse in any way, any confidential  information
of the disclosing  party  concerning  the subject  matter hereof,  including any
trade or business  secrets of the disclosing party and any technical or business
materials  that  are  treated  by  the  disclosing   party  as  confidential  or
proprietary,  including without limitation information (whether in written, oral
or machine readable form) concerning:  general business  operations:  methods of
doing business,  servicing clients, client 


                                       9
<PAGE>

relations, and of pricing and making charge for services and products; financial
information,  including costs, profits and sales; marketing strategies; business
forms developed by or for the disclosing party;  names of suppliers,  personnel,
clients and potential  clients;  negotiations  or other  business  contacts with
suppliers,  personnel,  clients and potential clients; form and content of bids,
proposals and contracts;  the disclosing  party's  internal  reporting  methods;
technical  and  business  data and  documentation;  software  programs,  however
embodied;  diagnostic  techniques;  and information  obtained by or given to the
disclosing party about or belonging to third parties.

IN WITNESS  WHEREOF,  the parties have  executed  this  agreement the date first
above written.

                                              By_________________________
                                                       Gary Danziger

PARKSIDE PHYSICAL THERAPY SERVICES, P.C.
          ATTEST:
                                              By ________________________
                                                        President

   By ____________________
                      Secretary

NEW MEDICAL PRACTICE, P.C.
   ATTEST:
                                              By ________________________
                                                        President

   By ____________________
                      Secretary

Jerry  Shames,  Attorney at Law,  hereby  executes  this  agreement for the sole
purpose of agreeing to serve as Escrow Agent in accordance  with the  provisions
of Article 13 of this agreement.


                                          -------------------------------
                                           Jerry Shames, Attorney at Law

                                       10

<PAGE>


STATE OF NEW YORK, COUNTY OF                     , SS.:

         On the day of August, 1996, before me personally came
                                 , to me known, who being duly sworn, did depose
and say that he resides at
                                 ; that he is the President of Parkside Physical
Therapy  Services,  P.C.,  the  corporation  described in and which executed the
foregoing Agreement of Sale; and that he signed his name thereto by the order of
the board of directors of the said corporation.


                                           -------------------------------
                                                     Notary Public
                                                My commission expires on



STATE OF NEW YORK, COUNTY OF                     , SS.:

         On the day of August, 1996, before me personally came Gary Danziger, to
me  known to be the  individual  described  in and who  executed  the  foregoing
Agreement of Sale, and acknowledged that he executed said Agreement of Sale.



                                           -------------------------------
                                                     Notary Public
                                                My commission expires on


STATE OF NEW YORK, COUNTY OF                     , SS.:

                  On the      day of August, 1996, before me personally came
                                 , to me known, who being duly sworn, did depose
and say that he resides at
                                       ; that he is the President of New Medical
Practice,  P.C., the  corporation  described in and which executed the foregoing
Agreement of Sale; and that he signed his name thereto by the order of the board
of directors of the said corporation.



                                           -------------------------------
                                                     Notary Public
                                                My commission expires on



                                   EXHIBIT A-1

                          Equipment and General Assets

<PAGE>



                                   EXHIBIT A-2

                                  Improvements


<PAGE>

                                   EXHIBIT A-3

                                    The Lease


<PAGE>

                                   EXHIBIT A-4

                         Contracts and Equipment Leases









Indebtedness under executory contracts or leases:




<PAGE>


                                   EXHIBIT A-5

                               Provider Agreements

<PAGE>

                                   EXHIBIT A-6

             Bank Accounts, Safe Deposit Boxes, Lines of Credit and
                        Persons Authorized to Access Each

                                       
<PAGE>

                                   EXHIBIT A-7

                               Accounts Receivable

<PAGE>

                                    EXHIBIT B

        Existing Indebtedness, Collateral, Copies of Security Agreements


<PAGE>

                   ===========================================



                               ASSIGNMENT OF LEASE


                             dated August ___, 1996

                                      from

                    Parkside Physical Therapy Services, P.C.

                                     Seller

                                       to

                           New Medical Practice, P.C.

                                    Purchaser



                   ===========================================


<PAGE>

                                    EXHIBIT C

                               ASSIGNMENT OF LEASE

         KNOW  THAT,  for  valuable  consideration,  Parkside  Physical  Therapy
Services,  P.C.,  a New York  corporation,  having  an  address  at 41 West 96th
Street,  New  York,  NY 10025  ("Assignor")  hereby  assigns  unto  New  Medical
Practice,  P.C.,  a New York  professional  corporation,  having an address at 2
Gannett Drive,  Suite 215, White Plains, NY 10604  ("Assignee") all right, title
and interest of Assignor as lessee under the following lease:

Whitehall Apartment Company to Parkside Physical Therapy Services
Dated November 22, 1994.

         TO HAVE AND TO HOLD said lease unto Assignee and the heirs,  executors,
administrators,  successors  and  assigns  of  Assignee  from and after the date
hereof,  for the rest of the term of said lease,  as the same may be modified or
extended.

         Assignee hereby assumes and agrees to perform,  from and after the date
hereof, all of the terms, covenants and conditions of said lease to be performed
by the lessee thereunder.

         IN WITNESS  WHEREOF,  Assignor and  Assignee  have duly  executed  this
assignment and assumption on August ___, 1996.



PARKSIDE PHYSICAL THERAPY SERVICES, P.C.
   ATTEST:
                                     By ________________________
                                                President

   By ____________________
                      Secretary



NEW MEDICAL PRACTICE, P.C.

   ATTEST:
                                     By ________________________
                                                President

   By ____________________
                      Secretary


<PAGE>

STATE OF NEW YORK, COUNTY OF                                  , SS.:

         On the day of August, 1996, before me personally came
                                 , to me known, who being duly sworn, did depose
and say that he resides at
                                 ; that he is the President of Parkside Physical
Therapy  Services,  P.C.,  the  corporation  described in and which executed the
foregoing  instrument;  and that he signed his name  thereto by the order of the
board of directors of the said corporation.


                                        -------------------------------
                                                 Notary Public
                                            My commission expires on



STATE OF NEW YORK, COUNTY OF                                  , SS.:

         On the day of August, 1996, before me personally came
                                 , to me known, who being duly sworn, did depose
and say that he resides at
                                       ; that he is the President of New Medical
Practice,  P.C., the  corporation  described in and which executed the foregoing
instrument;  and that he signed  his name  thereto  by the order of the board of
directors of the said corporation.


                                        -------------------------------
                                                  Notary Public
                                           My commission expires on

         The  undersigned,  as lessor under the lease described in the foregoing
assignment of lease, hereby consents to said assignment of the lease.



                                       -------------------------------
                                         Whitehall Apartment Company


<PAGE>


                                    EXHIBIT D

                              FINANCIAL STATEMENTS




                   ===========================================



                                AGREEMENT OF SALE


                              dated August __, 1996

                                     between

                                 Gary Danziger,

                                            Seller

                                   PTSR, Inc.


                                       and

                        Oak Tree Medical Management, Inc.

                                            Purchaser



                   ===========================================



<PAGE>


                                AGREEMENT OF SALE


AGREEMENT  OF  SALE,  made  August  __,  1996,  among  PTSR,  Inc.,  a New  York
corporation,  having  an  address  at 1725  Tenbroeck  Avenue,  Bronx,  NY 10461
("PTSR"), Gary Danziger,  having an address at 1 Crooked Mile Road, Westport, CT
06880 ("Seller"), and Oak Tree Medical Management, Inc., a New York corporation,
having  an  address  at 2  Gannett  Drive  Suite  215,  White  Plains,  NY 10604
("Purchaser").


                              W I T N E S S E T H:

WHEREAS,  Purchaser desires to acquire, and Seller desires to sell, the stock of
the corporation known as PTSR, Inc., ("PTSR")  hereinafter  specified,  upon the
terms and conditions hereinafter set forth, and

WHEREAS, Seller is the shareholder of PTSR.

NOW, THEREFORE,  in consideration of the covenants and agreements  hereafter set
forth,  and other valuable  consideration,  the receipt and sufficiency of which
hereby is acknowledged, the parties hereto agree as follows:

1. Agreement To Sell. Seller agrees to sell,  transfer and deliver to Purchaser,
and Purchaser agrees to purchase,  upon the terms and conditions hereinafter set
forth,  all of the capital stock of the New York  corporation,  PTSR,  Inc. such
shares totaling (100) One Hundred.  Said shares constitute all of the authorized
and issued shares of the corporation (the "Shares").

2. The Assets of the  Corporation.  It is the  understanding of the parties that
PTSR is the owner of the following assets (the "Assets"):

     (a)  the  equipment,  patient files,  name and general assets  described in
          Exhibit A-1 hereto and all similar equipment  acquired or owned by the
          business on or before the closing date (the "General Assets");

     (b)  the  furniture,  fixtures  and  improvements  described in Exhibit A-2
          hereto and all similar  items  acquired or owned by the business on or
          before the closing date (the "Improvements");

     (c)  the lease described in Exhibit A-3 hereto (the "Lease");



                                       2
<PAGE>

     (d)  the equipment  leases,  contracts and agreements  described in Exhibit
          A-4 hereto (the "Contracts");

     (e)  the Provider  Agreements  described and attached in Exhibit A-5 hereto
          (the "Provider Agreements");

     (f)  the bank accounts, lines of credit and safe deposit boxes, including a
          list of the persons  authorized  to access the bank  accounts and safe
          deposit boxes, described in Exhibit A-6 hereto (the "bank accounts and
          boxes");

     (g)  The  accounts   receivable   listed  in  Exhibit  A-7  (the  "Accounts
          Receivable").

Notwithstanding  anything  to the  contrary  contained  herein,  there  shall be
excluded from the Assets, all cash on hand and in PTSR's bank accounts.

3. Purchase  Price.  The purchase  price to be paid by Purchaser is Four Hundred
Twenty Five Thousand Dollars ($425,000.00), payable as follows:

          (a) Twenty Five Thousand Dollars ($25,000.00) at the closing.

          (b) Four  Hundred  Thousand  Dollars  ($400,000.00)  at the closing by
          taking  title  subject  to  and  assuming   payment  of  the  Existing
          Indebtedness  owed to Lea Adar  identified in Exhibit B hereto in said
          principal amount,  and paying the same according to the terms thereof.
          If on the  closing  date  the  outstanding  principal  balance  of the
          Existing  Indebtedness is less than $400,000.00,  the $25,000.00 to be
          paid at the  closing by check  pursuant  to clause (a) above  shall be
          increased by the amount that such outstanding  principal balance shall
          be less than  $400,000.00.  IN NO CASE SHALL  PRUCHASER BE RESPONSIBLE
          FOR MORE THAN THE PRINCIPAL OF $400,000.00 OF THIS DEBT.

4.   The Closing.  The  "closing"  means the  settlement of the  obligations  of
     Seller and  Purchaser  to each other under this  agreement,  including  the
     payment of the purchase price to Seller as provided in Article 3 hereof and
     the delivery of the closing documents provided for in Article 5 hereof. The
     closing shall be held at the offices of Robert P. Borsody,  P.C.,  250 Park
     Avenue, New York, NY 10177, and shall take place within thirty (30) days of
     completion of  Purchaser's  audit,  (the "closing  date");  but in no event
     shall closing take place later than September 30, 1996.

5.   Closing  Documents.  At the  closing  Seller  shall  execute and deliver to
     Purchaser:

     (a)  an   Assignment   of  the  rights  of  the  lessee  under  the  Lease,
          substantially in the form of Exhibit C hereto

     (b)  certified copies of resolutions duly adopted by the Board of Directors
          and  Shareholder of Seller  authorizing  the sale of the Stock and the
          performance by Seller of its obligations hereunder


                                       3
<PAGE>

     (c)  an opinion of Seller's  counsel,  Jerry Shames,  Esq.  dated as of the
          closing  date,  in form  and  substance  satisfactory  to  Purchaser's
          counsel,   stating  such  counsel's   opinion  that:  (i)  PTSR  is  a
          corporation  duly  organized,  validly  existing and in good  standing
          under the laws of New York;  (ii) PTSR and Seller  have full power and
          authority,  corporate and otherwise,  to enter into this agreement and
          perform its obligations hereunder; (iii) the execution and delivery of
          this  agreement  and  the  performance  by  PTSR  of  its  obligations
          hereunder  have been duly  authorized  by the Board of  Directors  and
          Shareholder  of PTSR and no further  action or approval is required in
          order to constitute this agreement as the binding obligation of Seller
          or  PTSR,   enforceable  in  accordance  with  its  terms,  except  as
          enforceability may be limited by bankruptcy, moratorium, insolvency or
          other laws affecting  creditor's rights generally;  (iv) the execution
          and  delivery of this  agreement  and the  performance  by PTSR of its
          obligations hereunder do not and will not violate any provision of the
          Certificate of  Incorporation or Bylaws of PTSR; and (v) except as may
          be set  forth in this  agreement,  such  counsel  is not  representing
          Seller or PTSR in any suit,  action or proceeding  against them which,
          if  adversely  determined,  would  prohibit  the  consummation  of the
          transactions contemplated by this agreement,

     (d)  the certificate or certificates for the Shares, duly endorsed so as to
          effectively  transfer  ownership of the Shares to Purchaser,  together
          with all appropriate federal and state transfer tax stamps affixed,

     (e)  letters  of  resignation  from  each  director  and  officer  of PTSR,
          effective as of the closing hereunder,

     (f)  the   Certificate   of   Incorporation,   filing   receipt  and  other
          organizational  documents of PTSR, and the Bylaws,  minute book, stock
          certificate  book and  seal of  PTSR;  any  bills,  vouchers,  records
          showing the ownership of the assets used in the operation of PTSR; and
          all other books of account, records and contracts of PTSR

     (g)  Restrictive Covenant as enumerated in Article Ten (10),

     (h)  Statement   executed  by  Lea  Adar  and  Seller  that  Existing  Debt
          identified in Exhibit B herein is currently  paid, to date of closing.
          Statement  shall  also note that any  payments  in  arrears  have been
          brought current, to date of closing,

     (i)  Statements executed by Lea Adar and Seller, releasing and indemnifying
          Purchaser from any and all  obligations  and  liabilities in excess of
          the principal of Four Hundred  Thousand  Dollars  ($400,000.00) of the
          Existing  Debt  identified  in Exhibit B herein.  Lea Adar shall state
          that she will look  only to  Seller  for any sums due her in excess of
          $400,000.00 principal obligation, assumed by Purchaser,

     (j)  such  other   instruments   and  information  in  form  and  substance
          satisfactory to Purchaser's attorneys as may be necessary or proper to
          transfer to Purchaser good and marketable title to all other ownership
          interests in the Stock to be transferred under this agreement.

At the closing  Seller shall deliver to Purchaser all keys for the business.  If
any keys for the  business  or assets are held by  employees  or others,  Seller
shall identify such individuals,  their 


                                       4
<PAGE>

addresses and their relationship to the Seller. Seller shall do all further acts
and  things as may be  necessary,  or  reasonably  requested  by  Purchaser,  to
consummate  the  transactions  contemplated  by this  agreement,  including  the
acquisition of possession of the Assets.  Seller shall advise  Purchaser of, and
cause  to  be  delivered  to  Purchaser,   all  trade  secrets  and  proprietary
information pertaining to the assets of the business.

At the closing Purchaser shall execute and deliver to Seller:

     (a)  an  Assumption  of the  obligations  of the  lessee  under the  Lease,
          substantially in the form of Exhibit C hereto

     (b)  an Assumption of the Existing Indebtedness

Except as expressly provided herein,  Purchaser shall not be obligated to pay or
perform any obligations or liabilities of Seller  including  without  limitation
obligations or liabilities of Seller to its creditors or any legal,  accounting,
brokerage or finder's  fees or any taxes or other  expenses in  connection  with
this agreement or the consummation of the transactions contemplated hereby.

6. Closing Adjustments.  The following items shall be apportioned as of midnight
of the day preceding the closing date:

         (a)  rent, including any additional rent, under the Lease

         (b)  taxes and applicable common charges under the lease

         (c)  water and sewer charges

         (d)  utilities , as applicable

         (e)  employee salaries and benefits

         (f)  interest on the Existing Indebtedness

Any errors or omissions in computing apportionments shall be corrected after the
closing, with both parties fully cooperating.

7.  Representations And Warranties Of Seller.  Seller represents and warrants to
Purchaser as follows:

     (a)  PTSR is a corporation  duly  organized and validly  existing under the
          laws of New York,  and is duly  qualified  to do business in New York.
          PTSR has full power and authority to own its properties and to conduct
          its  business  as now  carried  on, and to carry out and  perform  its
          undertakings  and  obligations as provided  herein.  The execution and
          delivery  by PTSR  of  this  agreement  and  the  consummation  of the
          transactions  contemplated  herein  have been duly  authorized  by the
          Board of Directors  of PTSR and will not  conflict  with or breach any
          provision of the Certificate of  Incorporation  or Bylaws of PTSR, and
          do not and will not  conflict  with or  result  in any  breach  of any
          condition or provision of, or constitute a default under, or result in
          the creation or imposition of any


                                       5
<PAGE>

          lien,  charge  or  encumbrance  upon  the  Assets  by  reason  of  the
          provisions  of any contract,  lien,  lease,  agreement,  instrument or
          judgment to which  Seller or PTSR is a party,  or which is or purports
          to be binding  upon  Seller or PTSR or which  affects or  purports  to
          affect  the  Assets.  No  further  action or  approval,  corporate  or
          otherwise,  is  required in order to  constitute  this  agreement  the
          binding and enforceable obligation of Seller or PTSR.

     (b)  No action,  approval,  consent  or  authorization,  including  without
          limitation  any  action,  approval,  consent or  authorization  of any
          governmental or quasi-governmental agency,  commission,  board, bureau
          or instrumentality, is necessary for Seller or PTSR to constitute this
          agreement the binding and enforceable  obligation of Seller or PTSR or
          to consummate the transactions contemplated hereby.

     (c)  Seller  is the  owner of the  Shares,  and the  Shares  are all of the
          issued and outstanding shares of stock of PTSR. All of the Shares have
          no par  value,  are  fully  paid  and  non-assessable,  have  not been
          assigned,  pledged or hypothecated,  and are free of all liens, claims
          and encumbrances, except as set forth herein. PTSR is the owner of and
          has good and marketable title to the Assets, free of all liens, claims
          and encumbrances, except as set forth herein.

     (d)  There are no violations,  potential  claims of violations or questions
          of irregularity  regarding any law or governmental  rule or regulation
          pending  or, to the best of  Seller's  knowledge,  threatened  against
          Seller,  PTSR or the Assets.  Seller and PTSR have  complied  with all
          laws and governmental rules and regulations applicable to the business
          or the  Assets.  Seller  and PTSR have  duly  notified  all  insurance
          carriers or third party  payors of any  suspected  or known  claims or
          potential  claims which may be asserted  against  seller,  PTSR or the
          Assets.

     (e)  There are no judgments,  liens, suits,  actions or proceedings pending
          or, to the best of Seller's knowledge, threatened against Seller, PTSR
          or the  Assets.  Neither  Seller,  PTSR nor the Assets are a party to,
          subject to or bound by any  agreement or any judgment or decree of any
          court, governmental body or arbitrator which would conflict with or be
          breached by the execution,  delivery or performance of this agreement,
          or which could prevent the carrying out of the  transactions  provided
          for in this agreement,  or which could prevent the use by Purchaser of
          the Stock or Assets or adversely affect the conduct of the business by
          Purchaser.

     (f)  PTSR has not entered into, and the Assets are not subject to, any: (i)
          written  contract or agreement  for the  employment of any employee of
          the  business;  (ii)  contract  with any labor  union or guild;  (iii)
          pension, profit-sharing, retirement, bonus, insurance, or similar plan
          with respect to any employee of the business; or (iv) similar contract
          or agreement affecting or relating to the Stock or Assets.

     (g)  At the time of the  closing,  there will be no (secured or  unsecured)
          creditors  of PTSR or Seller,  other than the holders of the  Existing
          Indebtedness, Exhibit B. Such payments on

                                       6
<PAGE>

          the Existing  Indebtedness are current and no payments are in arrears.
          General business creditors and equipment lessors are listed in Exhibit
          A-4  attached  hereto.  Except as set forth  herein,  Seller  shall be
          liable for all other  obligations  incurred by PTSR or Seller prior to
          closing.

     (h)  The Lease is in full force and effect and  without any default by PTSR
          thereunder.  All copies of the Lease  provided by Seller to  Purchaser
          are true and complete copies of the original  Lease.  The lease may be
          assigned to Purchaser.

     (i)  Identified Contracts and Equipment Leases are in full force and effect
          and without any  default by Seller or PTSR  thereunder.  All copies of
          the Contracts and Leases  provided by Seller to Purchaser are true and
          complete  copies of the  original  Contracts.  Seller and PTSR are not
          indebted under any executory Contracts or Leases, except as may be set
          forth in Exhibit A-4 hereto.

     (j)  Any and all Provider Agreements are in full force and effect. True and
          complete copies of such Agreements are attached hereto as Exhibit A-5.

     (k)  Seller  and  PTSR  have  filed  each  tax  return,  including  without
          limitation all income,  excise,  property,  gain, sales, franchise and
          license tax returns,  required to be filed by Seller and PTSR prior to
          the date hereof. Each such return is true,  complete and correct,  and
          Seller has paid all taxes, assessments and charges of any governmental
          authority  required to be paid by it and has created  reserves or made
          provision for all taxes accrued but not yet payable.  No government is
          now asserting,  or to Seller's  knowledge  threatening to assert,  any
          deficiency  or  assessment  for  additional  taxes  or  any  interest,
          penalties  or fines  with  respect  to Seller.  Seller's  federal  tax
          identification   number  is   _________________.   Seller  shall  hold
          purchaser  harmless  and  indemnify  Purchaser  against all claims for
          taxes due from and owed by Seller or PTSR.

     (l)  The attached financial  statements in Exhibit D are true and accurate.
          The financial  statements  fairly and correctly  present the financial
          position  of the Seller and will so  represent  such as of the date of
          closing.

At the closing  Seller shall execute and deliver an affidavit  setting forth the
above representations as of the date of the closing.

8.  Representations  And  Warranties  Of  Purchaser.  Purchaser  represents  and
warrants to Seller as follows:


     (a)  Purchaser is a corporation  organized  under the laws of New York, and
          is duly qualified to do business in New York. Purchaser has full power
          and  authority  to  carry  out  and  perform  its   undertakings   and
          obligations  as  provided  herein.   The  execution  and  delivery  by
          Purchaser of this agreement and the  consummation of the  transactions
          contemplated  herein  have  been  duly  authorized  by  the  Board  of
          Directors  of  Purchaser  and will not  conflict  with or  breach  any
          provision of the Certificate of  Incorporation or Bylaws of Purchaser.
          No further action or approval,  corporate or otherwise, is required in
          order  to  constitute  this  agreement  the  binding  and  enforceable
          obligation of Purchaser.



                                       7
<PAGE>

     (b) No  action,  approval,  consent  or  authorization,  including  without
         limitation  any  action,  approval,  consent  or  authorization  of any
         governmental or quasi-governmental agency, commission, board, bureau or
         instrumentality,   is  necessary  for  Purchaser  to  constitute   this
         agreement  the binding and  enforceable  obligation  of Purchaser or to
         consummate the transactions contemplated hereby.

9.  Conditions To Closing.  The  obligations of Purchaser to close hereunder are
subject to the following conditions:

     (a)  All of the terms,  covenants  and  conditions  to be complied  with or
          performed  by Seller  under this  agreement  on or before the  closing
          shall have been complied with or performed in all material respects.

     (b)  All  representations  or  warranties  of Seller herein are true in all
          material  respects as of the closing date.  Such  representations  and
          warranties shall also survive closing.

     (c)  Satisfactory results of financial audit.

     (d)  All assets are in good working order, as applicable.

     (e)  On the closing date,  there shall be no liens or encumbrances  against
          the Assets, except as provided for herein.

     (f)  The  business of PTSR will have been  conducted  only in the  ordinary
          course of business.  No contracts or purchase  agreements/orders  will
          have been entered into, other than in the ordinary course of business.
          No expenditures or credit purchases will be made by Seller, other than
          in the ordinary course of business.

     (g)  Seller, PTSR and their  representatives and advisors will supply, upon
          request  by  Purchaser  and  its   representatives,   such   pertinent
          information  as may be required by  Purchaser  in order to conduct its
          due  diligence  survey of PTSR.  It is agreed  that any  documents  or
          information  provided  hereunder  shall be kept in full  and  complete
          confidence.

     (h)  All payments  under the Existing  Indebtedness  are current and not in
          arrears, to date of closing.

Seller  promptly  shall notify the lessor under the Lease (the  "Lessor") of the
proposed assignment of the Lease to Purchaser,  and shall request the consent of
the  Lessor  thereto.  Seller and  Purchaser  shall  furnish to the Lessor  such
information  as may  reasonably be required in connection  with the procuring of
such  consent,  and shall  otherwise  cooperate  in an  effort to  expeditiously
procure such consent.  Purchaser  agrees to pay to the Lessor an amount of up to
$10,000.00 in  consideration  for the consent of Lessor to the assignment of the
Lease to Purchaser.  If the Lessor shall fail or refuse to grant such consent in
writing  within  thirty  days  after the date of this  agreement  (the  "Outside
Date"),  or shall  require as a condition  of the  granting of such consent that
additional  consideration  be paid to the  Lessor  (in  excess of the  aforesaid
$10,000.00  to be paid by  Purchaser)  which  neither  Seller nor  Purchaser  is
willing to pay, then Purchaser may terminate this  agreement,  by written notice
to the other delivered within ten days after the Outside Date.


                                       8
<PAGE>

If this  agreement  is  terminated  as provided  above in this Article 9, Seller
shall  return any payments  made by Purchaser on account of the purchase  price,
whereupon all rights of Purchaser hereunder and to the business shall terminate,
and neither Seller nor Purchaser  shall have any further claim against the other
hereunder.

10. Restrictive  Covenant Not to Compete.  Seller will not, for a period of four
(4) years from the date of closing,  either directly or indirectly engage in the
practice of  physical  therapy or related  services,  within  lower  Westchester
County, NY (up to and including latitude of White Plains, NY), Fairfield County,
CT and within a ten (10) mile radius of PTSR's current address at 1725 Tenbroeck
Avenue, Bronx, NY 10461. Seller shall execute at closing, such documents as will
evidence this surviving provision.

11.  Indemnification.  Each  party  hereto  shall  indemnify  and hold the other
parties harmless from and against all liability, claim, loss, damage or expense,
including  reasonable  attorneys' fees,  incurred or required to be paid by such
other parties by reason of any breach or failure of observance or performance of
any representation,  warranty,  covenant or other provision (including lists and
Exhibits) of this  agreement  by such party.  Seller  shall  indemnify  and hold
Purchaser harmless against all actions, suits, proceedings, judgments, costs and
expenses  incurred  by or levied  against  Purchaser,  due to Seller's or PTSR's
prior acts, omissions, negligence or other wrongful conduct.

12. Risk Of Loss. The risk of loss to the assets of the business sold hereunder,
until the  closing,  is assumed  and shall be borne by  Seller.  Seller and PTSR
agree to keep all of its assets fully insured against any loss,  either by fire,
theft or casualty,  to the date of closing.  In the event that prior to closing,
such Assets are  totally or  substantially  damaged by reason of fire,  theft or
casualty,   Purchaser  may,  in  its  sole  discretion,   terminate  the  within
transaction.  In such  case,  all  money  heretofore  deposited  with  Seller or
Seller's  representative shall be refunded to Purchaser and the parties shall be
released  from any  further  liability  hereunder.  If the  Purchaser  elects to
consummate this transaction  despite such loss or damage, it may do so by paying
the purchase price set forth herein,  reduced by any insurance proceeds received
by Seller.

13. Brokerage.  The parties hereto represent and warrant to each other that they
have not dealt with any broker or finder in connection with this agreement other
than the broker,  American  Health  Resources,  LLC with offices at 21394 Marina
Cove  Circle,  Suite  H11,  North  Miami  Beach,  FL 33180 (the  "Broker").  The
Purchaser  shall  be  solely  responsible  for  and  shall  pay at  closing  all
commission,  fees, expenses and charges due or owing to the Broker in connection
with this  transaction,  pursuant to a separate  agreement between the Purchaser
and Broker.  Purchaser  and Seller shall  indemnify,  defend and hold each other
harmless  from  and  against  any  loss,  cost,  expense,   claim  or  liability
(including, without limitation,  reasonable attorney's fees) arising under or in
respect of any claim by any person or entity for any commission,  fee or expense
in respect of the transaction  contemplated by this Agreement,  where such claim
is  based in whole  or in part  upon  any act of the  indemnifying  party or its
representatives.  The  provisions of this Article shall survive the  expiration,
termination or cancellation  of this Agreement,  but shall not be construed as a
covenant for the benefit of any third party.

14. The Seller. Seller hereby confirms all of the representations and warranties
of PTSR,  and agrees to indemnify and hold  Purchaser  harmless from and against
misrepresentation or breach of any warranty by PTSR, or any breach or failure by
Seller to comply with any term, covenant or condition of this 


                                       9
<PAGE>


agreement.  Seller  represents and warrants that he is the  shareholder of PTSR,
and  that  he has  full  power  and  authority  to  carry  out and  perform  his
undertakings and obligations as provided  herein.  Seller agrees as aforesaid to
induce  Purchaser to enter into this agreement.  No action or inaction of Seller
or Purchaser, including the giving of notices, shall affect, change or discharge
the obligations of the Purchaser's Guarantor hereunder.

15. Notices. All notices, demands and other communications required or permitted
to be given  hereunder  shall be in  writing  and  shall be  deemed to have been
properly given if delivered by hand or by registered or certified  mail,  return
receipt requested,  with postage prepaid,  to Seller's  attorney,  Jerry Shames,
Esq.  at 16 Taylor  Place,  Westport,  CT 06880,  and to  Purchaser's  attorney,
Frederick C. Veit,  Esq., at 2 Gannett Drive Suite 215, White Plains,  NY 10604.
The  respective  attorneys  for the parties  hereby are  authorized  to give any
notice  required or  permitted  hereunder  and to agree to  adjournments  of the
closing.

16. Survival.  The representations,  warranties and covenant contained herein or
in any document,  instrument,  certificate  or schedule  furnished in connection
herewith  shall  survive the delivery of the Bill of Sale and shall  continue in
full force and effect after the closing, except to the extent waived in writing.

17. Further Assurances. In connection with the transactions contemplated by this
agreement,  the parties  agree to execute and deliver such further  instruments,
and to take such further  actions,  as may be reasonably  necessary or proper to
effectuate and carry out the transactions contemplated in this agreement.

18.  Changes  Must Be In  Writing.  No delay or  omission  by  either  Seller or
Purchaser in exercising any right shall operate as a waiver of such right or any
other right.  This  agreement may not be altered,  amended,  changed,  modified,
waived or terminated  in any respect or  particular  unless the same shall be in
writing  signed by the party to be bound.  No waiver by any party of any  breach
hereunder shall be deemed a waiver of any other or subsequent breach.

19.  Captions And Exhibits.  The captions in this agreement are for  convenience
only and are not to be  considered in construing  this  agreement.  The Exhibits
annexed to this  agreement  are an integral  part of this  agreement,  and where
there is any  reference  to this  agreement  it shall be deemed to include  said
Exhibits.

20.  Governing  Law.  This  agreement  shall be  governed  by and  construed  in
accordance with the laws of the State of New York.

21.  Binding  Effect.  This  agreement  shall be  binding  upon and inure to the
benefit  of  the  parties  hereto  and  their   respective   heirs,   executors,
administrators, successors and assigns.

22. Cancellation. Purchaser reserves the right to cancel this Agreement, without
penalty, if any negative disclosure is discovered  regarding Seller, PTSR or its
Assets, which would materially affect the value of PTSR's Assets.

23. Taxes.  Purchaser  agrees to treat the current taxable year (ending December
31,  1996) of PTSR as if it  consisted  of two  taxable  years,  the first  such
taxable year ending on the Closing Date, and to cause


                                       10
<PAGE>

PTSR to file a Section  1377 (a) (2)  Election  when  filing the  corporate  tax
return  for the  taxable  year.  Purchaser  agrees  that it will not  allow  the
Corporation  to file the tax return or any K-1s without the prior  consent (such
consent not to be unreasonably  withheld) of the Seller and that prior to filing
any K-1s, the Seller shall have the right to review the tax return and the K-1s.
If Seller or PTSR has not  maintained  adequate books and records to comply with
this provision, Seller shall be responsible for the accounting costs in assembly
adequate records needed to comply with this provision.

24. Confidentiality.  Each party acknowledges and agrees that any information or
data it has acquired from the other party, not otherwise  properly in the public
domain,  was received in  confidence.  Each party hereto  agrees not to divulge,
communicate or disclose, except as may be required by law or for the performance
of this  Agreement  (including  conducting  due diligence or notifying a party's
lender),  or use to the detriment of the disclosing  party or for the benefit of
any other person or persons, or misuse in any way, any confidential  information
of the disclosing  party  concerning  the subject  matter hereof,  including any
trade or business  secrets of the disclosing party and any technical or business
materials  that  are  treated  by  the  disclosing   party  as  confidential  or
proprietary,  including without limitation information (whether in written, oral
or machine readable form) concerning:  general business  operations:  methods of
doing business,  servicing clients, client relations,  and of pricing and making
charge for  services  and  products;  financial  information,  including  costs,
profits and sales; marketing strategies;  business forms developed by or for the
disclosing party; names of suppliers,  personnel, clients and potential clients;
negotiations or other business contacts with suppliers,  personnel,  clients and
potential  clients;  form and  content of bids,  proposals  and  contracts;  the
disclosing party's internal  reporting methods;  technical and business data and
documentation;  software programs, however embodied;  diagnostic techniques; and
information  obtained by or given to the disclosing  party about or belonging to
third parties.



                                       11

<PAGE>


IN WITNESS  WHEREOF,  the parties have  executed  this  agreement the date first
above written.

       SELLER:
                                                    By_________________________
                                                             Gary Danziger

PTSR, INC.
   ATTEST:
                                                    By ________________________
                                                             President

   By ____________________
           Secretary


 OAK TREE MEDICAL MANAGEMENT, INC.
   ATTEST:
                                                    By ________________________
                                                             President

   By ____________________
           Secretary


                                       12
<PAGE>



STATE OF NEW YORK, COUNTY OF                                         , SS.:

         On  the  ____  day  of  August,   1996,   before  me  personally   came
__________________________________________________ , to me known, who being duly
sworn, did depose and say that he resides at  __________________________________
_________________________  ;  that  he is  the  President  of  PTSR,  Inc.,  the
corporation described in and which executed the foregoing Agreement of Sale; and
that he signed his name  thereto by the order of the board of  directors  of the
said corporation.


                                                 -------------------------------
                                                          Notary Public
                                                     My commission expires on


STATE OF NEW YORK, COUNTY OF                                              , SS.:

                  On the day of August,  1996,  before me  personally  came Gary
Danziger,  to me known to be the  individual  described  in and who executed the
foregoing Agreement of Sale, and acknowledged that he executed said Agreement of
Sale.


                                                 -------------------------------
                                                          Notary Public
                                                     My commission expires on


STATE OF NEW YORK, COUNTY OF                                              , SS.:

         On  the  _____  day  of  August,   1996,   before  me  personally  came
________________________________________________  , to me known,  who being duly
sworn, did depose and say that he resides at  __________________________________
__________________________________________________ ; that he is the President of
Oak Tree Medical  Management of New York Inc., the corporation  described in and
which  executed the  foregoing  Agreement  of Sale;  and that he signed his name
thereto by the order of the board of directors of the said corporation.



                                                 -------------------------------
                                                          Notary Public
                                                     My commission expires on




                                       13
<PAGE>



                                   EXHIBIT A-1

                          Equipment and General Assets




                                       14
<PAGE>



                                   EXHIBIT A-2

                                  Improvements





                                       15
<PAGE>



                                   EXHIBIT A-3

                                    The Lease





                                       16
<PAGE>


                                   EXHIBIT A-4

                         Contracts and Equipment Leases




Indebtedness under executory contracts or leases:





                                       17
<PAGE>




                                   EXHIBIT A-5

                               Provider Agreements


                                       18
<PAGE>




                                   EXHIBIT A-6

             Bank Accounts, Safe Deposit Boxes, Lines of Credit and
                       Persons Authorized to Access Each




                                       19
<PAGE>








                                   EXHIBIT A-7

                               Accounts Receivable




                                       20
<PAGE>




                                    EXHIBIT B

        Existing Indebtedness, Collateral, Copies of Security Agreements







                                       21
<PAGE>




                   ===========================================



                               ASSIGNMENT OF LEASE


                             dated August ___, 1996

                                      from

                                   PTSR, Inc.

                                                  Seller

                                       to

                        Oak Tree Medical Management, Inc.

                                                  Purchaser



                   ===========================================




                                       22
<PAGE>


                                    EXHIBIT C

                               ASSIGNMENT OF LEASE

         KNOW  THAT,  for  valuable  consideration,   PTSR,  Inc.,  a  New  York
corporation,  having  an  address  at 1725  Tenbroeck  Avenue,  Bronx,  NY 10461
("Assignor") hereby assigns unto Oak tree Medical  Management,  Inc., a New York
corporation,  having an address at 2 Gannett Drive Suite 215,  White Plains,  NY
10604 ("Assignee") all right, title and interest of Assignor as lessee under the
following lease:

Physur Realty Associates to PTSR, Inc.
Dated December 1, 1991.

         TO HAVE AND TO HOLD said lease unto Assignee and the heirs,  executors,
administrators,  successors  and  assigns  of  Assignee  from and after the date
hereof,  for the rest of the term of said lease,  as the same may be modified or
extended.

         Assignee hereby assumes and agrees to perform,  from and after the date
hereof, all of the terms, covenants and conditions of said lease to be performed
by the lessee thereunder.

         IN WITNESS  WHEREOF,  Assignor and  Assignee  have duly  executed  this
assignment and assumption on August ___, 1996.


PTSR, INC.
    ATTEST:
                                                 By ________________________
                                                           President

   By ____________________
          Secretary


OAK TREE MEDICAL MANAGEMENT, INC.

   ATTEST:
                                                 By ________________________
                                                           President

   By ____________________
          Secretary




                                       23
<PAGE>






STATE OF NEW YORK, COUNTY OF                                              , SS.:

         On  the  _____  day  of  August,   1996,   before  me  personally  came
_______________________________________ , to me known, who being duly sworn,
did   depose   and   say   that   he   resides   at   __________________________
___________________________________________; that he is the President of PTSR,
Inc., the corporation  described in and which executed the foregoing instrument;
and that he signed his name  thereto by the order of the board of  directors  of
the said corporation.



                                               -------------------------------
                                                         Notary Public
                                                   My commission expires on



STATE OF NEW YORK, COUNTY OF                                              , SS.:

         On  the  ____  day  of  August,   1996,   before  me  personally   came
___________________________  , to me known, who being duly sworn, did depose and
say  that  he   resides   at   _________________________________________________
_________________________________________________  ; that he is the President of
Oak Tree  Medical  Management,  Inc.,  the  corporation  described  in and which
executed the  foregoing  instrument;  and that he signed his name thereto by the
order of the board of directors of the said corporation.


                                               -------------------------------
                                                         Notary Public
                                                   My commission expires on


The undersigned, as lessor under the lease described in the foregoing assignment
of lease, hereby consents to said assignment of the lease.



                                                -------------------------------
                                                    Physur Realty Associates




                                       24
<PAGE>


                                    EXHIBIT D

                              FINANCIAL STATEMENTS


                                       25

<TABLE> <S> <C>


<ARTICLE>                     5
       
<S>                             <C>
<PERIOD-TYPE>                   3-MOS
<FISCAL-YEAR-END>                              MAY-31-1996
<PERIOD-START>                                 JUN-01-1996
<PERIOD-END>                                   AUG-31-1996
<CASH>                                             106,894
<SECURITIES>                                             0
<RECEIVABLES>                                    5,159,797
<ALLOWANCES>                                     1,486,270
<INVENTORY>                                              0
<CURRENT-ASSETS>                                 3,849,012
<PP&E>                                             552,228
<DEPRECIATION>                                     175,227
<TOTAL-ASSETS>                                  10,508,757
<CURRENT-LIABILITIES>                            1,462,237
<BONDS>                                                  0
                                    0
                                              0
<COMMON>                                            25,292
<OTHER-SE>                                       7,772,677
<TOTAL-LIABILITY-AND-EQUITY>                    10,508,757
<SALES>                                          1,002,463
<TOTAL-REVENUES>                                 1,002,463
<CGS>                                              176,427
<TOTAL-COSTS>                                      550,152
<OTHER-EXPENSES>                                         0
<LOSS-PROVISION>                                         0
<INTEREST-EXPENSE>                                  43,072
<INCOME-PRETAX>                                    232,812
<INCOME-TAX>                                        87,426
<INCOME-CONTINUING>                                145,386
<DISCONTINUED>                                           0
<EXTRAORDINARY>                                          0
<CHANGES>                                                0
<NET-INCOME>                                       145,386
<EPS-PRIMARY>                                          .06
<EPS-DILUTED>                                          .04
                               


</TABLE>


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