PROMEDCO MANAGEMENT CO
8-K, 1997-12-17
OFFICES & CLINICS OF DOCTORS OF MEDICINE
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                       SECURITIES AND EXCHANGE COMMISSION
                             Washington, D.C. 20549




                                FORM 8-K

                              CURRENT REPORT


                     Pursuant to Section 13 or 15(d) of the
                       Securities and Exchange Act of 1934


          Date of Report (date of earliest event reported): December 2, 1997



                           ProMedCo Management Company
             (Exact name of Registrant as specified in its charter)


       Delaware                      0-21373                   75-2529809
       (State of              (Commission File No.)           (IRS Employer
     Incorporation)                                         Identification No.)


                          801 Cherry Street, Suite 1450
                             Fort Worth, Texas 76102
           (Address of principal executive offices, including zip code)


                                (817) 335-5035
              (Registrant's telephone number, including area code)





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



<PAGE>






Item 2.  Acquisition or Disposition of Assets

         On December 2, 1997,  ProMedCo  Management  Company  ("ProMedCo" or the
"Company"),  a Delaware  corporation,  through its wholly owned  subsidiary,  HP
Acquisition Corp.,  acquired all of the outstanding stock of Health Plans, Inc.,
a Maine corporation ("HPI"). HPI provides capitation management services through
risk contracting with third-party payors. Currently, HPI provides services which
cover  approximately  30,000  capitated  lives,  and it manages a network of 240
physicians and several  hospitals in the Maine and New Hampshire area. The total
consideration  for  the  transaction  was  approximately  $8.5  million,   which
consisted  of a $1.7 million of cash and $6.8  million of the  Company's  common
stock and stock options.  The consideration was determined  through arm's length
negotiations  between  the  representatives  of  ProMedCo  and HPI.  The factors
considered in determining the purchase price included  information  with respect
to the financial condition,  assets,  liabilities,  businesses and operations of
each entity on both a historical and prospective  basis. The cash portion of the
purchase price was funded with  borrowings from the Company's  revolving  credit
facility.  The  acquisition  will be accounted for using the purchase  method of
accounting.

Item 7.  Financial Statements and Exhibits

          Financial Statements

         (a) It is impractical to provide the required  financial  statements at
this time. The required  financial  statements  will be filed as an amendment to
this report as soon as practical in accordance with Item 7(a)(4) of Form 8-K.

         (b) It is  impractical  to provide  the  required  pro forma  financial
information at this time. The required pro forma financial  information  will be
filed as an amendment to this report as soon as  practical  in  accordance  with
Item 7(a)(4) of Form 8-K.

         Exhibits

         (c) Agreement for Statutory Merger by and between HP Acquisition Corp.,
a Wholly  Owned  Subsidiary  of ProMedCo  Management  Company,  with PBMA Health
Systems, Inc. and Health Plans, Inc. Dated July 25, 1997.




2




<PAGE>






                                    SIGNATURE


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 hereunto duly authorized.




                                        ProMedCo Management Company




                                         By: /s/ H. Wayne Posey
                                                 H. Wayne Posey
                                       President and Chief Executive Officer


Date:  December 17, 1997










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


                         AGREEMENT FOR STATUTORY MERGERS

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



                              HP ACQUISITION CORP.,

                          A WHOLLY OWNED SUBSIDIARY OF

                          PROMEDCO MANAGEMENT COMPANY,

                                      WITH

                            PBMA HEALTH SYSTEMS, INC.

                                       AND

                               HEALTH PLANS, INC.


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



                                  July 25, 1997

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<PAGE>











                                DRAMATIS PERSONAE
<TABLE>
<CAPTION>


                 Player                              Office Address                          Home Address
<S>                              <C>                                            <C>
                                 ProMedCo, Inc.
H. Wayne Posey                             ProMedCo, Inc.
President                                  801 Cherry St.
                                           Suite 1450                           (Edwards) 214-294-0119
Dale Edwards                               Fort Worth, TX 76102
Senior Vice President                      817-335-5035
E-mail: [email protected]                  Fax 817-335-8321
Pager: 1-800-759-7243
Pin #5733551
                                                                                (Johnson) 817-923-2465
Deborah Johnson
Senior Vice President
                                ProMedCo Counsel
John E. Gillmor                            Boult, Cummings,                     (Gillmor) 1700 Graybar
615-252-2305                               Conners & Berry                      Lane
Fax 615-252-6305                           414 Union Street, Suite              Nashville, TN 37215
E-mail: [email protected]                  1600                                 615-297-3149
                                           Nashville, TN 37219                  Car 615-419-4119
Kevin Campbell                             615-244-2582                         Portable 615-330-3668
615-252-2325                               Fax 615-252-2380
E-mail:[email protected]
                               Health Plans, Inc.

Robert Sontheimer                          Health Plans, Inc.                   56 Beatrice Circle
207-781-6613                               Foreside Place                       Belmont, MA 02178
                                           202 US Route 1                       617-484-4828
                                           Falmouth, ME 04105                   Fax 617-484-8766
                                           (PO Box 9746
                                           Portland, ME 04104-
                                           5040)
                                           1-800-439-9895
                                           Fax 207-828-2409

                              Health Plans Counsel
Michele M.  Garvin                         Ropes & Gray                         (Garvin) 617-825-0906
617-951-7495                               One International Place
Email: [email protected]               Boston, MA 02110-2624
                                           617-951-7000
Michael Sexton                             Fax 617-951-7050
617-951-7807
Email: [email protected]

</TABLE>

3






<PAGE>


                                       -i-




                                Table of Contents


ARTICLE 1 DEFINITIONS...................................................1
         Affiliate......................................................1
         Balance of the HP Consideration................................1
         Balance of the HSI Consideration...............................1
         COBRA    ......................................................1
         Closing  ......................................................1
         Closing Date...................................................1
         Code     ......................................................1
         Consideration..................................................1
         Definitive Closing Statements..................................1
         Exhibit Volume.................................................1
         Final Closing Statement........................................2
         GAAP     ......................................................2
         HP       ......................................................2
         HP Consideration...............................................2
         HP Financial Statements........................................2
         HSI      ......................................................2
         HSI Consideration..............................................2
         HSI Merger.....................................................2
         Initial Portion of the HP Consideration........................2
         Initial Portion of the HSI Consideration.......................2
         Inventory......................................................2
         IRS      ......................................................3
         Market Value...................................................3
         MergerSub......................................................3
         Pension Plan...................................................3
         Person   ......................................................3
         ProMedCo ......................................................3
         ProMedCo Stock.................................................3
         Shareholder Representative.....................................3
         Shareholders...................................................3
         Tax Gross Up...................................................4
         Tax Value......................................................4

ARTICLE  2. MERGERS AND OTHER TRANSACTIONS..............................4
         2.1  Merger of HSI into MergerSub..............................4
         2.2  Merger of HP into MergerSub...............................7

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<PAGE>


                                      -ii-




         2.3  Cash Mergers...............................................9
         2.4  Closing and Effective Date of Merger.......................9
         2.5  Further Assurances........................................10
         2.6  Dissenting Stockholders of HSI and/or HP..................10
         2.7  Nature of Transaction; Further Assurances.................10
         2.8  Legend....................................................10
         2.9 Additional Transactions at the Closing.....................11
         2.10  Consideration Adjustments................................11

ARTICLE  3 REPRESENTATIONS AND WARRANTIES OF THE CONSTITUENT
         CORPORATIONS...................................................12
         3.1  Organization, Corporate Power and Qualification...........12
         3.2  Capitalization of the Constituent Corporations............13
         3.3  Subsidiaries, Affiliates, Affiliated 
              Companies and Joint Venture. .............................15
         3.4  Financial Statements......................................15
         3.5  Absence of Undisclosed Liabilities........................16
         3.6  Letters of Credit.........................................16
         3.7  Absence of Certain Recent Changes.........................16
         3.8  Title to Assets...........................................18
         3.9  Contracts.................................................18
         3.10  Defaults.................................................20
         3.11  Inventory................................................20
         3.12  Equipment................................................21
         3.13  Investments..............................................21
         3.14  Receivables..............................................21
         3.15  Powers of Attorney.......................................22
         3.16  Guarantees...............................................22
         3.17  Permits and Licenses.....................................22
         3.18  Bank Accounts............................................22
         3.19  Intangible Property Rights...............................22
         3.20  Assets Necessary to Business.............................23
         3.21  Litigation, etc..........................................23
         3.22  Court Orders, Decrees and Laws...........................23
         3.23  Taxes....................................................23
         3.24  Immigration Act..........................................25
         3.25  ERISA....................................................25
         3.26  Pension, etc. ...........................................26
         3.27  Employee Matters.........................................26
         3.28  Insurance and Bonds......................................27
         3.29  Labor Matters............................................27




<PAGE>


                                      -iii-




         3.30  Improper Payments.......................................27
         3.31  Books of Account; Reports...............................28
         3.32  No Finders or Brokers...................................28
         3.33  Insider Transactions....................................28
         3.34  Authority; Binding Effect...............................28
         3.35  Consents and Approvals of Governmental Authorities......28
         3.36  Disclosure..............................................29

ARTICLE 4 REPRESENTATIONS AND WARRANTIES OF PROMEDCO AND
         MERGERSUB
          .............................................................29
         4.1  Organization and Standing of ProMedCo and MergerSub......29
         4.2 Prospectus; Financial Statements..........................29
         4.3  Absence of Certain Changes...............................30
         4.4  Authority; Binding Effect................................30
         4.5  No Finders or Brokers....................................31
         4.6  Defaults.................................................31
         4.7  Pending Litigation.......................................31
         4.8  Court Orders, Decrees and Laws...........................31
         4.9  Consents and Approvals of Governmental Authorities.......31
         4.10  Interim Operations of Merger Sub. ......................32
         4.11  Disclosure..............................................32

ARTICLE  5 COVENANTS OF PROMEDCO ......................................32
         5.1  The Subsidiary...........................................32
         5.2  Best Efforts to Secure Consents..........................32
         5.3  Information..............................................32
         5.4  Corporate Action.........................................33
         5.5  Handling of Documents....................................33
         5.6  Non-Disclosure...........................................33
         5.7 Tax Representation Letter.................................33

ARTICLE  6 COVENANTS OF THE CONSTITUENT CORPORATIONS...................33
         6.1  Access and Information...................................33
         6.2  Conduct of Business......................................34
         6.3  Compliance with Agreement................................34
         6.4  Best Efforts to Secure Consents..........................35
         6.5  Unusual Events...........................................35
         6.6  Interim Financial Statements.............................35
         6.7  Stockholders' Meeting....................................35

iii






<PAGE>


                                      -iv-




         6.8  Departmental Violations..................................35
         6.9  Insurance Ratings........................................36
         6.10  Maintain Insurance Coverage.............................36
         6.11  Exclusive Dealings......................................36
         6.12  Non-Disclosure..........................................36
         6.13  HP Stock Options........................................36
         6.14 Tax Representation Letter................................36
         6.15 Modification of ERISA Plans..............................36

ARTICLE  7 CONDITIONS PRECEDENT TO THE OBLIGATIONS OF THE CONSTITU
         ENT CORPORATIONS .............................................37
         7.1  Representations and Warranties True......................37
         7.2  Opinion of Counsel.......................................37
         7.3  Authority................................................37
         7.4  No Obstructive Proceeding................................37
         7.5  Delivery of Certain Documents............................38
         7.6  Approval by Stockholders of the Constituent Corporations.38
         7.7  Articles of Merger. .....................................38
         7.8  Maine Bureau of Insurance................................38

ARTICLE  8 CONDITIONS PRECEDENT TO THE OBLIGATIONS OF PROMEDCO
         AND MERGERSUB.................................................38
         8.1  Representations and Warranties True......................38
         8.2  No Obstructive Proceeding................................39
         8.3  Opinion of Counsel to the Constituent Corporations.......39
         8.4  Consents and Approvals...................................39
         8.5  No Adverse Change........................................39
         8.6  Stockholder Agreements...................................40
         8.7 Shareholder Representations...............................40
         8.8  Approval by Stockholders of the Constituent Corporations.40
         8.9  Maine Bureau of Insurance................................40
         8.10  Delivery of Certain Documents...........................40
         8.11  Employment Agreements...................................40
         8.12  Articles of Merger......................................40

ARTICLE  9  TERMINATION................................................40
         9.1  Optional Termination.....................................40
         9.2  Notice of Abandonment. ..................................41
         9.3  Mandatory Termination....................................41
         9.4  Termination..............................................41




<PAGE>


                                                      -5-

         9.5  Shareholder Representative...............................42

ARTICLE 10 MISCELLANEOUS...............................................43
         10.1  Expenses................................................43
         10.2 HSR .....................................................43
         10.3  Cooperation by ProMedCo.................................43
         10.4  Cooperation by Constituent Corporations.................43
         10.5  Notices. ...............................................43
         10.6  Entire Agreement........................................44
         10.7  Governing Law...........................................44
         10.8 WAIVER OF TRIAL BY JURY..................................44
         10.9 Legal Fees and Costs.....................................45
         10.10  Section Headings.......................................45
         10.11  Waiver.................................................45
         10.12  Nature and Survival of Representations.................45
         10.13  Exhibits...............................................45
         10.14  Assignment.............................................46
         10.15  Binding on Successors and Assigns......................46
         10.16  Parties in Interest....................................46
         10.17  Amendments.............................................46
         10.18  Drafting Party.........................................46
         10.19  Counterparts...........................................46
         10.20  Press Releases.........................................46

APPENDIX 2.1 ARTICLES OF MERGER AND PLAN OF MERGER FOR THE HSI
MERGER

APPENDIX 2.2 ARTICLES OF MERGER AND PLAN OF MERGER FOR THE HP MERGER

APPENDIX 4.1 BYLAWS OF MERGERSUB

APPENDIX 5.7  PROMEDCO TAX REPRESENTATION LETTER

APPENDIX 6.14  CONSTITUENT CORPORATION TAX REPRESENTATION LETTER

APPENDIX 7.2 OPINION OF COUNSEL TO PROMEDCO

APPENDIX 8.3 OPINION OF COUNSEL TO HP

APPENDIX 8.6 FORM OF STOCKHOLDER AND INDEMNIFICATION AGREEMENT

APPENDIX 8.7 SHAREHOLDER CONTINUITY OF INTEREST CERTIFICATE

APPENDIX 8.11A-C FORMS OF EMPLOYMENT AGREEMENT


<PAGE>


                                                      -1-

                         AGREEMENT FOR STATUTORY MERGERS

         Agreement for  Statutory  Mergers  ("Agreement"),  dated as of July 25,
1997, among ProMedCo Management Company, a Delaware corporation ("ProMedCo"), HP
Acquisition Corp., a Maine corporation and a wholly-owned subsidiary of ProMedCo
(  "MergerSub"),  PBMA Health  Systems,  Inc., a Maine  corporation  ("HSI") and
Health  Plans,  Inc., a Maine  corporation  ("HP";  HSI and HP are  collectively
referred to herein as the "Constituent Corpora
tions").

     The parties hereby agree as follows:

ARTICLE 1 DEFINITIONS

         For the purposes of this  Agreement,  the following  definitions  shall
apply:

"Affiliate" means with  respect to any Party,  any  entity  which  controls,  is
         controlled  by, or is under common  control with such party all as more
         fully  set forth in the rules and  regulations  of the  Securities  and
         Exchange Commission under the Securities Act of 1933, as amended.

"Balance of the HP Consideration" is defined in ss. 2.1.7.

"Balance of the HSI Consideration" is defined in ss. 2.2.7.

"COBRA" means Title X of the Consolidated Omnibus Budget Reconciliation Act of 
         1985, 26 U.S.C. ss. 162 et seq.

"Closing" and "Closing Date" are defined in ss. 2.4.

"Code" means the Internal Revenue Code of 1986, as amended.

"Consideration" means $7,500,000 adjusted pursuant to ss. 2.10.

"Constituent Corporations" means HP and HSI..

"CPA Firm" is defined in ss. 2.10(a).

"Definitive Closing Statements" is defined in ss. 2.10.

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

"Exhibit Volume"  means the volume of  Exhibits  referred  to in this  Agreement
         prepared and delivered by HP.

1






<PAGE>


                                                      -2-

"Final Closing Statement" is defined in ss. 2.10.

"GAAP" means generally accepted accounting principles.

"HP" means Health Plans, Inc., a Maine corporation.

"HP      Consideration" means shares of ProMedCo Stock at valued at Market Value
         having  an  aggregate  value  equal to the  Consideration  less the HSI
         Consideration;  provided how ever, if ProMedCo  exercises its option to
         effect cash mergers pursuant to ss. 2.3, "HP Consideration"  shall mean
         cash in an amount equal to the HP Consideration  increased by an amount
         necessary on a grossed up basis to compensate the HP  Shareholders  for
         the difference  between the Federal capital gains tax rate in effect on
         the Effective Date and the highest marginal  individual  Federal Income
         Tax rate on the same date and such for any increased state or other tax
         liability resulting from ProMedCo's exercising its option to effectuate
         cash mergers under ss. 2.3 (the "Tax Gross Up").

"HP Financial Statements" is defined in ss. 3.4.

"HSI" means PBMA Health Systems, Inc., a Maine corporation.

"HSI     Consideration"   means  the  amount   obtained   by   multiplying   the
         Consideration  by a fraction,  the (x) numerator of which is the number
         of shares  of HP  Common  Stock  held by HSI  immediately  prior to the
         Closing and (y) the  denominator of which is the number of shares of HP
         Common Stock  outstanding  immediately  prior to the  Closing.  The HSI
         Consideration  shall consist of (A) shares of ProMedCo  Stock having an
         aggregate  value  (based on a per share  value  equal to the Tax Value)
         equal to 50% of the total HSI  Consideration  (increased to the extent,
         if any,  necessary to reflect payments to dissent ers), as set forth in
         ss.  2.1.7  hereof,  and  (B)  cash  (including  cash  paid  in lieu of
         fractional  shares)  equal  to the  total  HSI  Consideration  less the
         aggregate  value of such shares of ProMedCo Stock (based on a per share
         value  equal to the  greater  of the Tax  Value or the  Market  Value);
         provided  however,  if  ProMedCo  exercises  its option to effect  cash
         mergers pursuant to ss. 2.3, "HSI  Consideration"  shall consist solely
         of cash.

"HSI Merger" is defined in ss.  2.1.

"Initial Portion of the HP Consideration" is defined in ss. 2.2.7.

"Initial Portion of the HSI Consideration" is defined in ss. 2.1.7.

"Inventory" means the inventory of HP.

"IRS" means the Internal Revenue Service.




<PAGE>


                                                      -3-

"Market  Value" means $8.80 per share if the average  closing  price of ProMedCo
         Stock for the five  trading  days ending two trading  days prior to the
         Closing is greater  than $8.36 and less than  $10.56;  if such  average
         closing price is $8.36 or less,  "Market Value" shall mean such average
         closing  price  plus  $.44;  and if such  average  price is  $10.56  or
         greater,  "Market  Value"  shall mean such average  closing  price less
         $1.76.

"MergerSub" means HP Acquisition  Corp., a Maine  corporation and a wholly-owned
         subsidiary of ProMedCo.

"Pension Plan" and "Pension  Plans" means any  "employee  pension  benefit plan"
         listed in Exhibit 3.25.

"Person" means  any  individual,   corporation,   partnership,   joint  venture,
         association, joint stock company, trust or unincorporated organization.

"ProMedCo" means ProMedCo Management Company, a Delaware corporation.

"ProMedCo Stock" means common stock, par value $.01 per share of ProMedCo.

"Shareholder Representative" is defined in ss. 9.5.

"Shareholders"  mean  the  following  Persons  (including  Transferees)  who are
         shareholders  of HSI or HP immediately  prior to the Closing;  "Current
         HSI  Shareholders"  is  defined  in ss.  2.1.8 and means the  following
         persons:


         HSI Shareholder                                 Number of HSI Shares
         ---------------                                 --------------------
         Paul Barresi, M.D.                                      128
         David L. Hall, M.D.                                     128
         Gordon Paine, M.D.                                      128
         John Wickenden, M.D.                                    128
         Charles Gluck, M.D.                                     128
         Johan Brouwer, M.D.                                     609
         Donald J. Weaver, M.D.                                  128
         Corwin Olds, M.D.                                       128
         Peter Shrier, M.D.                                      128
         Onni Kangas, M.D.                                       128
         Dr. Gregory O'Keefe                                      15

         and "HP Shareholders" means those persons who were shareholders of HP 
         as follows:


3






<PAGE>


                                                      -4-

                                                     Number of HP Shares to be
         HP Shareholder                                   Held at Closing+
         --------------                                   ---------------
         Robert Sontheimer                                     74,512
         Michael Florance                                       4,000
         Valeri Saffer                                          7,500
         Carol Brewer                                           7,500
         Judy Arbuckle                                          1,000
         Jeffery Kirby                                          1,000
         Beth Williams                                            600
         Matt McGovern                                            600
         Helen Leddy                                              500
         Matt Flynn                                               500
- ------------
+ Assumes exercise of options to purchase HP Stock prior to the Closing.

"Tax Gross Up" is defined in the definition of HP Consideration.

"Tax     Value" means the lesser of (x) Market Value or (y) the average  closing
         price of ProMedCo  Stock for the five  trading  days ending two trading
         days prior to the Closing less a discount determined by Piper Jaffray &
         Company, ProMedCo's investment bankers, necessary to reflect, as of the
         Closing Date, the economic value of unregistered ProMedCo Stock subject
         to the  restrictions  contemplated  by this  Agreement,  including  the
         holding  period  required by Rule 144 of the  Securities  and  Exchange
         Commission and the tax representations to be signed by the Shareholders
         pursuant to ss. 8.7 hereof.

ARTICLE  2. MERGERS AND OTHER TRANSACTIONS

         2.1  Merger of HSI into  MergerSub.  HSI shall be merged  with and into
MergerSub  (the "HSI  Merger")  on the  Effective  Date (as  defined  in ss. 2.4
hereof) in accordance with the applicable laws of the State of Maine as provided
in the  Articles and Plan of Merger  attached  hereto as Appendix  2.1,  certain
provisions of which are as follows:

                  2.1.1 Surviving Corporation.  MergerSub shall be the surviving
         corporation (the "Surviving  Corporation") from and after the Effective
         Date,  and  the  name  of  the  Surviving   Corporation  shall  be  "HP
         Acquisition  Corp." On the Effective  Date,  the sepa rate existence of
         HSI shall cease,  and the  Surviving  Corporation  shall  without other
         transfer  succeed to all the rights and property,  subject to all debts
         and  liabilities,  of HSI and  MergerSub  in the same  manner as if the
         Surviving Corporation itself had incurred them.





<PAGE>


                                                      -5-

                  2.1.2 Articles of Incorporation.  From and after the Effective
         Date, the Articles of Incorporation of the Surviving  Corporation shall
         be  amended  to be the same as the  Articles  of  Incorporation  of the
         MergerSub.

                  2.1.3 By-Laws.  From and after the Effective Date, the by-laws
         of the  MergerSub as they exist on the date hereof shall be the by-laws
         of the Surviving Corporation.

                  2.1.4  Directors and  Officers.  The directors and officers of
         MergerSub  immedi  ately  prior  to the  Effective  Date  shall  be the
         officers and directors,  respectively, of the Surviving Corporation, to
         serve, in both cases,  until their  successors  shall have been elected
         and shall qualify or until  otherwise  provided by law and the Articles
         of Incorpo ration and by-laws of the Surviving Corporation.

                  2.1.5  Exchange  of Shares  for Cash  and/or  Securities.  The
         manner  and basis of  exchanging  and  converting  the shares of common
         stock  of the  MergerSub  and HSI on the  Effective  Date  shall  be as
         follows:

                  (a)      Common  Stock of  MergerSub.  By virtue of the Merger
                           and  without  any action of the holder  thereof  each
                           share of common stock of MergerSub outstanding on the
                           Effective Date shall remain outstanding and unchanged
                           as a  share  of the  common  stock  of the  Surviving
                           Corporation.

                  (b)      Common Stock of HSI.  By virtue of the merger and 
                           without any action of the holders thereof each share 
                           of (i) the no par value Class A Voting Common Stock
                           of HSI and (ii)  the no par Class B Non-Voting Common
                           Stock of HSI (collectively the "HSI Common Stock") 
                           outstanding at the Effective Date shall be 
                           reclassified into the right to receive the portion of
                           the HSI Consideration determined in accordance with 
                           the formula set forth in ss.2.1.7 hereof and 
                           distributable in accordance with the time schedule 
                           set forth in such section, except that any share of 
                           HSI Common Stock then owned by HSI or MergerSub shall
                           be canceled.

                  2.1.6 Rights of HSI's Stockholders  Pending and Upon Surrender
         of Certifi cates. From and after the Effective Date, except as provided
         in the  Maine  Business  Corporation  Act with  respect  to  rights  of
         dissenting  stockholders,  each  holder of a  certificate  representing
         shares of HSI Common Stock shall be entitled, upon surrender thereof to
         the Surviving Corporation,  to receive in exchange therefor the portion
         of the  Consideration  to which such holder would otherwise be entitled
         on the basis provided for in ss.2.1.5(b) of this Agreement.


5






<PAGE>


                                                      -6-

                  2.1.7 HSI Exchange Formula.  As a result of the Closing,  each
         share of HSI Common Stock shall be  exchanged  for the right to receive
         the  portion of the HSI  Consideration  obtained  by  dividing  (x) HSI
         Consideration,  as adjusted  pursuant to ss. 2.10, by (y) the number of
         shares of HSI Common Stock issued and outstanding  immediately prior to
         the  Effective  Date  other  than  those  owned  by HSI  or  MergerSub.
         Immediately after the Closing, 80% of the HSI Consideration which would
         be  distributable if no adjustments were made pursuant to ss. 2.10 (the
         "Initial Portion of the HSI Consideration") shall be distributed to the
         former HSI  shareholders,  and 120 days after the Effective Date, or on
         such later time as is reasonable under the  circumstances  for ProMedCo
         to have computed the adjustments, if any, under ss. 2.10 the balance of
         the  HSI   Consideration   due  hereunder  (the  "Balance  of  the  HSI
         Consideration").  The Initial  Portion of the HSI  Consideration  shall
         include  a number  of  shares  of  ProMedCo  Stock  that is  sufficient
         (regardless  of  the  ultimate   amount  of  the  Balance  of  the  HSI
         Consideration)  to satisfy the  requirement set forth in the definition
         of HSI Consideration that at least 50 % of HSI Consideration be paid in
         ProMedCo  Stock.  The  Surviving  Corporation  shall  not  deliver  any
         fraction of a share of ProMedCo  Stock but will  deliver a whole number
         of shares of ProMedCo  Stock  rounded up to the next whole  number with
         the value of the fractional share being reflected in the amount of cash
         distributed.  Notwithstanding the foregoing,  if ProMedCo exercises its
         option  to  effect  a  cash  merger   pursuant  to  ss.  2.3,  the  HSI
         Consideration shall consist of cash only.

                  2.1.8  Transfers of HSI Stock.  HSI agrees that,  on and after
         the date of this Agreement, it shall not issue any additional shares of
         HSI Common Stock or authorize or permit any person who holds HSI Common
         Stock on the date of this  Agreement (a "Current HSI  Shareholder")  to
         sell,  transfer,  pledge or  dispose of in any manner any shares of HSI
         Common Stock; provided,  however, that a Current HSI Stockholder may be
         permitted  by HSI to  transfer  shares of HSI  Common  Stock to another
         person (the "Transferee") if:

                        (i)         the  Transferee  executes  a joinder to this
                                    Agreement  and  agrees in writing to execute
                                    and   be    bound   by   the    Stock    and
                                    Indemnification     Agreement     and    all
                                    certificates  and other documents  furnished
                                    or   required   to  be   furnished   by  HSI
                                    Stockholders    pursuant   to   the   Merger
                                    Agreement  or the Stock and  Indemnification
                                    Agreement;

                       (ii)         such executed  documents and  agreements are
                                    delivered  to  counsel  to HP  and  ProMedCo
                                    prior  to any  transfer  of the  HSI  Common
                                    Stock and are  satisfactory  in form to such
                                    counsel; and

                      (iii)         the Shareholder Representatives shall revise
                                    and determine in their sole  discretion  the
                                    allocation of cash and ProMedCo  Stock among
                                    the HSI  Stockholders  who have  elected  to
                                    receive a portion of HSI




<PAGE>


                                                      -7-

                                    Consideration  as cash  in lieu of  ProMedCo
                                    Stock   so   that   (a)  the   Current   HSI
                                    Stockholders  who are not  transferring  HSI
                                    Common Stock are not  adversely  affected by
                                    any such transfer and (b) the ability of the
                                    transactions  contemplated by this Agreement
                                    to qualify as  tax-free  reorganizations  is
                                    not adversely affected by such transfers.

         By  executing  the  joinder  to  this   Agreement,   each  Current  HSI
         Stockholder  agrees  to be bound by the  terms  of this ss.  2.1.8  and
         agrees  that he will not sell,  transfer,  pledge or  dispose of in any
         manner any shares of HSI Common Stock except as permitted in compliance
         with the terms of this ss. 2.1.8.

         2.2 Merger of HP into MergerSub.  Immediately after consummation of the
HSI Merger,  HP shall be merged with and into MergerSub (the "HP Merger") on the
Effective Date (as defined in ss. 2.4 hereof) in accordance  with the applicable
laws of the  State of Maine  as  provided  in the  Articles  and Plan of  Merger
attached hereto as Appendix 2.2, certain provisions of which are as follows:

                  2.2.1 Surviving Corporation.  MergerSub shall be the surviving
         corporation (the "Surviving  Corporation") from and after the Effective
         Date, and the name of the Surviving Corporation shall be "Health Plans,
         Inc." On the Effective Date, the separate  existence of HP shall cease,
         and the Surviving  Corporation  shall without other transfer succeed to
         all the rights and property,  subject to all debts and liabilities,  of
         HP and  MergerSub  in the same manner as if the  Surviving  Corporation
         itself had incurred them.

                  2.2.2 Articles of Incorporation.  From and after the Effective
         Date, the Articles of Incorporation of the Surviving  Corporation shall
         be  amended  to be the same as the  Articles  of  Incorporation  of the
         MergerSub  except that the name of the Surviving  Corporation  shall be
         "Health Plans, Inc."

                  2.2.3 By-Laws.  From and after the Effective Date, the by-laws
         of the  MergerSub as they exist on the date hereof shall be the by-laws
         of the Surviving Corporation.

                  2.2.4  Directors and  Officers.  The directors and officers of
         MergerSub  immedi  ately  prior  to the  Effective  Date  shall  be the
         officers and directors,  respectively, of the Surviving Corporation, to
         serve, in both cases,  until their  successors  shall have been elected
         and shall qualify or until  otherwise  provided by law and the Articles
         of Incorpo ration and by-laws of the Surviving Corporation.


7





<PAGE>


                                                      -8-

                  2.2.5  Exchange  of Shares  for Cash  and/or  Securities.  The
         manner  and basis of  exchanging  and  converting  the shares of common
         stock  of the  MergerSub  and  HP on the  Effective  Date  shall  be as
         follows:

                  (a)      Common  Stock of  MergerSub.  By virtue of the Merger
                           and  without  any action of the holder  thereof  each
                           share of common stock of MergerSub outstanding on the
                           Effective Date shall remain outstanding and unchanged
                           as a  share  of the  common  stock  of the  Surviving
                           Corporation.

                  (b)      Common Stock of HP.  By virtue of the merger and 
                           without any action of the holders thereof each share 
                           of (i) the $.01 par value Voting Common Stock of
                           HP, (ii) the $.01 par value Nonvoting Common Stock of
                           HP and (iii) the $15.00 par value Nonvoting 
                           Convertible Preferred Stock of, including in each
                           case shares owned by MergerSub by virtue of the HSI
                           Merger, (collectively the "HP Common Stock") 
                           outstanding at the Effective Date shall be 
                           reclassified into the right to receive the portion 
                           of the HP Consideration determined in accordance with
                           the formula set forth in ss. 2.2.7 hereof and 
                           distributable in accordance with the time schedule 
                           set forth in such section, except that any share of 
                           HP Common Stock then owned by HP or MergerSub shall 
                           be canceled.

                  2.2.6 Rights of HP's  Stockholders  Pending and Upon Surrender
         of Certifi cates. From and after the Effective Date, except as provided
         in the  Maine  Business  Corporation  Act with  respect  to  rights  of
         dissenting  stockholders,  each  holder of a  certificate  representing
         shares of HP Common Stock shall be entitled,  upon surrender thereof to
         the Surviving Corporation,  to receive in exchange therefor the portion
         of the  Consideration  to which such holder would otherwise be entitled
         on the basis provided for in ss.2.2.5(b) of this Agreement.

                  2.2.7 HP Exchange  Formula.  As a result of the Closing,  each
         share of HP Common Stock, including those held by MergerSub as a result
         of the HSI  Merger,  shall be  exchanged  for the right to receive  the
         portion  of  the  HP   Consideration   obtained  by  dividing   (x)  HP
         Consideration,  as adjusted  pursuant to ss. 2.10, by (y) the number of
         shares of HP Common Stock issued and outstanding  immediately  prior to
         the  Effective  Date  excluding  those shares owned by HP or MergerSub.
         Immediately after the Closing,  80% of the HP Consideration which would
         be  distributable if no adjustments were made pursuant to ss. 2.10 (the
         "Initial Portion of the HP Consideration")  shall be distributed to the
         former HP  shareholders,  and 120 days after the Effective  Date, or on
         such later time as is reasonable under the  circumstances  for ProMedCo
         to have computed the adjust ments,  if any, under ss. 2.10, the balance
         of  the  HP  Consideration  due  hereunder  (the  "Balance  of  the  HP
         Consideration")  shall be distributed to the former shareholders of HP.
         The combined  distributions  shall be comprised of the number of shares
         of ProMedCo




<PAGE>


                                                      -9-

         Stock,  valued at the Market Value per share, having an aggregate value
         equal to the portion of the HP  Consideration  then being  distributed.
         The Surviving  Corporation shall not deliver any fraction of a share of
         ProMedCo  Stock but will  deliver a whole  number of shares of ProMedCo
         Stock  rounded down to a whole number with the value of the  fractional
         share being paid in cash.  Notwithstanding  the foregoing,  if ProMedCo
         exercises  its option to effect a cash merger  pursuant to ss. 2.3, the
         HP Consideration shall consist of cash only.

         2.3 Cash Mergers. Notwithstanding the provisions of ss.ss. 2.1 and 2.2,
if Market Value is $8.00 or less, ProMedCo and MergerSub shall have the right to
effect the transactions  contemplated  herein as mergers in which HSI and HP are
the surviving  corporation pursuant to which the shareholders of HSI and HP will
receive cash for their shares. If it exercises such option, ProMedCo must effect
both mergers as a condition to effecting  either merger,  and this Agreement and
the various  appendixes hereto will be amended to reflect the fact that ProMedCo
will create two special  purpose  acquisition  corporations,  each with the same
articles of incorpo  ration and bylaws as MergerSub  (except for the name of the
corporation),  that  the  surviving  entity  in the  mergers  will be HSI and HP
respectively and that the articles of incorporation  and bylaws of the surviving
corporations  will be  modified  as a  result  of the  mergers  to  include  all
operative  provisions of the articles of incorporation and bylaws of the special
purpose acquisi tion corporations. ProMedCo may effect cash mergers only if such
modifications  contain such  provisions  as each of the affected  parties  deems
appropriate to ensure that the transactions  are properly  structured from a tax
point  of view as  taxable  acquisitions  of the  stock of HSI and HP and do not
result in corporate level taxation or result in incremental tax liability to the
HP employee  shareholders  taking  into  account the Tax Gross Up, as defined in
Section 1 under "HP  Consideration."  The parties shall  cooperate in making all
necessary regulatory filings to effectuate the restructured transactions.

         2.4  Closing  and  Effective  Date  of  Merger.  At  the  closing  (the
"Closing"),  which  shall be held  within  five days after  satisfaction  of the
conditions  set forth in  Articles  7 and 8 (or at such  later  date as shall be
agreeable to HP and ProMedCo but in no event later than September 16, 1997) (the
"Closing  Date") at the  offices of Ropes & Gray in Boston,  MA, in  addition to
other actions  contemplated  hereunder,  (i) HSI and MergerSub  shall execute in
accordance with the Maine Business  Corporation Act, and shall cause to be filed
and recorded with the appropri ate offices under the laws of the State of Maine,
copies of the Articles of Merger  relating to the HSI Merger and such  officers'
certificates  and other  documents  as may be  necessary  or appro priate in the
opinion of counsel to ProMedCo to cause the Merger to become effective under the
laws of the State of Maine and (ii) HP and MergerSub shall execute in accordance
with the  Maine  Business  Corporation  Act,  and  shall  cause to be filed  and
recorded  with the  appropriate  offices  under  the laws of the State of Maine,
copies of  Articles  of Merger  relating  to the HP  Merger  and such  officers'
certificates  and other  documents  as may be necessary  or  appropriate  in the
opinion of counsel to ProMedCo to cause the Merger to become effective under the
laws of

9





<PAGE>


                                                      -10-

the State of Maine. The Mergers shall become effective at the time the Secretary
of the  State of Maine  issues a  Certificates  of  Merger  in  response  to the
aforesaid filings of the Articles of Merger (the "Effective Date").

         2.5  Further  Assurances.   The  Surviving  Corporation,   through  its
appropriate  officers and directors,  is hereby  authorized,  in the name of the
ProMedCo or MergerSub,  either  Constituent  Corporation or itself,  to execute,
acknowledge and deliver all instruments of further  assurance and to do all such
acts and things as it may, at any time,  deem  necessary or desirable to vest in
the  Surviving   Corporation  any  property  or  rights  of  either  Constituent
Corporation  or  ProMedCo  or  MergerSub,  or to carry  out any of the  purposes
expressed in this Agreement.

         2.6  Dissenting  Stockholders  of HSI and/or HP.  Each  stockholder  of
either Constituent  Corporation,  if any, who becomes entitled,  pursuant to ss.
909 of the Maine Business  Corporation  Act, to payment of the fair value of his
HSI or HP Common Stock, as the case may be, (a "Dissenting  Stockholder")  shall
receive payment therefor from the Surviving Corporation but only after the value
thereof  shall have been  agreed  upon or finally  determined  pursuant  to such
provisions. Neither Constituent Corporation shall, except with the prior written
consent of ProMedCo,  voluntarily  make any payment with respect to or settle or
offer to settle any demand for such payment.  Shares of Constituent  Corporation
Common  Stock  acquired  by  either  Constituent  Corporation  or the  Surviving
Corporation from Dissenting Stockholders shall be canceled.

         2.7 Nature of Transaction;  Further Assurances. The parties intend that
the  transac   tions   contemplated   hereby   shall   constitute   a  tax  free
reorganizations  pursuant to ss. 368(a) of the Internal Revenue Code of 1986, as
amended,  (the "Code") and shall use their best efforts to avoid any actions not
contemplated  hereby  which  are  inconsistent  with such  intention.  ProMedCo,
MergerSub, HSI and HP, respectively,  shall take all such action as may be neces
sary or appropriate to effectuate the transactions contemplated hereby.

         2.8 Legend.  The  certificates  representing  the ProMedCo Common Stock
issued to the former  stockholders  of HSI and HP as the  result of the  mergers
shall bear the following legend:

         "THE SHARES  REPRESENTED BY THIS  CERTIFICATE  HAVE NOT BEEN REGISTERED
         UNDER THE SECURITIES ACT OF 1933, AS AMENDED,  OR ANY APPLICABLE  STATE
         SECURITIES   LAWS,  AND  MAY  NOT  BE  OF  FERED,   SOLD  OR  OTHERWISE
         TRANSFERRED,  PLEDGED OR HYPOTHE CATED UNLESS AND UNTIL SUCH SHARES ARE
         REGISTERED UNDER SUCH ACT, OR SUCH STATE LAWS, OR AN OPINION OF COUNSEL
         IS FURNISHED TO THE COMPANY  (WHICH OPINION AND COUNSEL REN DERING SAME
         SHALL BE  REASONABLY  SATISFACTORY  TO THE COM PANY) TO THE EFFECT THAT
         SUCH REGISTRATION IS NOT REQUIRED."




<PAGE>


                                                      -11-

         2.9  Additional  Transactions  at the Closing.  At the Closing HP shall
enter into  employment  agreements  in the forms  attached as  Appendices  8.11A
through  C hereto  (the  "Employment  Agreements")  with  Robert  M.  Sontheimer
(Appendix 8.11A),  Gregory A. Wagoner,  M.D., M.B.A. (Appendix 8.11B) and Valeri
Saffer,  Elspeth C.  Williams,  Carol Brewer,  Matthew L.  McGovern.  Matthew J.
Flynn, Jeffrey Kirby, C.P.A., and Randall E. Tatro (Appendix 8.11C).

         2.10  Consideration Adjustments.

(a)  Definitive Closing Statements. Within 120 days after the Closing or by such
     time as is reasonable under the  circumstances,  ProMedCo shall prepare and
     deliver to the HSI and HP Shareholders and the Shareholder Representative a
     final  combined  balance sheet of HSI and HP as of the Closing Date ("Final
     Closing  Statement").  ProMedCo  covenants that the Final Closing Statement
     shall be true, complete and accurate and will present fairly the assets and
     liabilities of HSI and HP as at the Closing Date,  calculated in accordance
     with GAAP as presented in the HSI and HP Financial  Statements  (as defined
     inss.3.4),  and  the  requirements  of  this  Agreement.  The  HSI  and  HP
     Shareholders and the Shareholder Represen tative and their  representatives
     shall  be  provided  access  to the  books  and  records  of HSI  and HP as
     necessary  to verify  the  accuracy  of such  calcula  tions.  If within 30
     business days of receipt of the Final Closing  Statement,  the  Shareholder
     Representative  fails to deliver to ProMedCo written notice  specifying any
     unacceptable  entries  on the Final  Closing  State  ments and the  reasons
     therefor, then such Final Closing Statement shall constitute the Definitive
     Closing  Statements.  If the  Shareholder  Represen  tative timely and duly
     delivers  such  notice  within 30  business  days of receipt  thereof,  the
     parties  shall  attempt in good faith to resolve the differ  ences,  and if
     they are  unable  to do so,  within  20 days  thereafter  either  party may
     deliver the Final Closing Statement to a "big six" accounting firm mutually
     acceptable  to  ProMedCo  and the  Shareholder  Representa  tive  (the "CPA
     Firm"),  who  shall  have 20  business  days to review  the  Final  Closing
     Statement and make such adjustments thereto as it deems necessary to ensure
     that the Final Closing  Statement has been prepared in accordance with GAAP
     as  presented  in the HSI and HP  Financial  State  ments  calculated  on a
     consistent  basis and the  requirements  of this Agree ment and  conform to
     consistently  applied generally accepted accounting  principles.  The Final
     Closing  Statement as so adjusted shall  constitute the Definitive  Closing
     Statement and shall be binding on ProMedCo and the HSI and Shareholders. If
     the total amount payable by ProMedCo pursuant to clause (b) below increases
     from that shown on the Final  Closing  State ment,  ProMedCo  shall pay the
     fees and expenses of the CPA Firm,  other wise such fees and expenses shall
     be borne by the HSI and HP Sharehold ers.

(b)  Balance  Sheet  Adjustment.  To the  extent  that  the  Definitive  Closing
     Statement  shows assets at Closing net of  liabilities to be different from
     $3,601,573  plus the proceeds from any exercise of stock options under HP's
     stock option plan on and after April 30, 1997, the  Consideration  shall be
     increased or reduced, as the case may be, to the nearest $.1.00 on a dollar
     for dollar basis.

Any  reduction in the Consideration  resulting from this ss. 2.10 shall be accom
     plished by first  reducing the Balance of HSI and HP  Consideration  and if
     such reductions  exhaust the Balance of the HSI and HP Consideration,  then
     the HSI and HP  Shareholders  shall  return  within 10 days  after a demand
     therefor by ProMedCo,  sufficient  additional  shares of ProMedCo Stock and
     cash from the  Initial  Portion  of the HSI and HP  Consideration  to fully
     satisfy  the  reduction  in  Consideration.   Any  reductions  of  the  HSI
     Consideration  resulting  under  this  clause  (b)  shall  consist  of such
     portions of cash and ProMedCo Stock as are  consistent  with the provisions
     of ss. 2.1.7.

ARTICLE  3 REPRESENTATIONS AND WARRANTIES OF THE CONSTITUENT
CORPORATIONS

         As of the date of this Agreement,  the Constituent  Corporations hereby
represent and warrant to ProMedCo and MergerSub as follows (each  representation
and  warranty  hereunder  shall  be  deemed  to be made  only  by a  Constituent
Corporation as to itself, and not as to the other Constituent Corporation):

         3.1  Organization,  Corporate  Power  and  Qualification.  Each  of the
Constituent  Corporations is a corporation duly organized,  validly existing and
in good  standing  under the laws of the  State of Maine and has full  corporate
power and authority to own,  lease and operate its  properties and assets and to
carry on its business as and where it is now being conducted, to enter into this
Agreement,  and to perform  its  obligations  contemplated  hereby.  Each of the
Constituent  Corporations  is duly  qualified  as a  foreign  corporation  to do
business and is in good standing in each  jurisdiction in which the character of
the properties owned or leased by it or the nature of the business transacted by
it makes such qualification necessary.  Each of the Constitu ent Corporations is
qualified  as a foreign  corporation  to do  business  in the states and foreign
countries  listed in Exhibit 3.1A of the Exhibit Volume which is a volume of all
Exhibits referred to in this Agreement (the "Exhibit  Volume").  No jurisdiction
where  one of the  Constituent  Corporations  is not  presently  qualified  as a
foreign  corporation  has made any  assertion  that  either  of the  Constituent
Corporation's business or ownership of property makes qualification as a

11





<PAGE>


                                                      -12-

foreign  corporation in such jurisdiction  necessary.  A copy of the Articles of
Incorporation and all amendments thereto as of the date hereof and a copy of the
by-laws,  as amended to the date hereof of each of the Constituent  Corporations
(both certified by the Secretary of such Constitu ent Corporation), are included
as Exhibit 3.1B of the Exhibit Volume and are true,  accurate and complete as of
the date hereof.  Neither of the Constituent  Corporation is in material default
under or in material violation of any provision of its Articles of Incorporation
or bylaws.

         3.2  Capitalization of the Constituent Corporations.

(a)  The authorized  capital stock of HSI consists : (i) 2,000 shares of Class A
     Voting Common Stock without par value, of which as of the date hereof 1,068
     shares  are  issued  and  outstanding  and  (ii)  1,000  shares  of Class B
     Non-Voting  Common Stock without par value,  of which as of the date hereof
     708 shares are issued and outstanding  (collectively the "HSI Stock").  All
     of such issued shares have been duly authorized by all necessary  corporate
     action on the part of HSI and are  validly  issued and  outstanding,  fully
     paid and non-assessable. No assessments have been made with respect to such
     stock which have not been fully  satisfied.  Except as set forth in Exhibit
     3.2A of the Exhibit Volume,  there are no other  authorized and outstanding
     or authorized equity securities of HSI of any class, kind or character, and
     there  are  no  outstanding  rights,  contracts,   rights  to  sub  scribe,
     conversion rights, exchange rights, warrants, options, calls, puts or other
     agreements  or  commitments  of any character to which HSI is a party or by
     which it is bound  relating to the capital  stock of HSI or any  securities
     convertible or  exchangeable  or exercisable for any shares of stock of any
     class of capital stock of HSI. HSI has no treasury  stock that has not been
     canceled as of the date hereof. Except for the transactions contemplated by
     this Agreement,  there are not any agreements or understandings among HSI's
     stockholders  to which HSI is a party or by which it is bound with  respect
     to the voting of shares of the HSI Stock on any matter. Except as set forth
     on  Exhibit  3.2A,  the HSI Stock is  subject to no pledge or other lien to
     which  HSI is a party or by which it is bound.  No  shares  of the  capital
     stock of HSI are  reserved  for any  purpose,  except  stock  reserved  for
     issuance upon the exercise of outstanding options as described above; there
     are no preemptive or similar  rights with respect to the issuance,  sale or
     other transfer  (whether  present,  past or future) of the capital stock of
     HSI and  there  are no  agreements  or  other  obligations  (contingent  or
     otherwise) which may require HSI to issue,  repurchase or otherwise acquire
     any  shares  of its  capital  stock or any other  securities.  There are no
     outstanding  or  authorized  stock  appreciation/phantom  stock or  similar
     rights with respect to HSI. Except as set forth on Exhibit 3.2B,  there are
     no voting trusts,  proxies,  or any other agreements or  understandings  to
     which HSI is a party or by which it is bound  with  respect  to the  voting
     stock of HSI.




<PAGE>


                                                      -13-


(b)  The  authorized  capital  stock of HP  consists : (i)  1,000,000  shares of
     Voting Common Stock, $.01 par value, of which as of the date hereof 150,012
     shares are issued  and  outstanding;  (ii)  1,000,000  shares of  Nonvoting
     Common Stock, $.01 par value, of which as of the date hereof 100 shares are
     issued and outstanding;  and (iii) 200,000 shares of Nonvoting  Convertible
     Preferred Stock,  $15.00 par value, of which as of the date hereof zero (0)
     shares are issued and outstanding  (collectively,  the Voting Common Stock,
     Nonvoting  Common  Stock and Nonvot  ing  Convertible  Preferred  Stock are
     referred to herein as the "HP Stock").  All of such issued shares have been
     duly authorized by all necessary corporate action on the part of HP and are
     validly issued and outstanding, fully paid and non-assessable. In addition,
     there have been duly reserved for issuance upon the exercise of outstanding
     options  216,988  shares  of Voting  Common  Stock  and  252,400  shares of
     Nonvoting  Common Stock,  which upon such exercise will be duly authorized,
     validly  issued,  fully  paid,  non-assessable  and  owned of record by the
     holders listed on Exhibit 3.2B. No assessments  have been made with respect
     to such stock which have not been fully  satisfied.  Except as set forth in
     Exhibit  3.2B of the  Exhibit  Volume,  there are no other  authorized  and
     outstanding  or authorized  equity  securities of HP of any class,  kind or
     character,  and  there  are no  outstanding  rights,  contracts,  rights to
     subscribe,  conversion rights, exchange rights,  warrants,  options, calls,
     puts or other  agreements or  commitments of any character to which HP is a
     party or by which it is bound  relating to the  capital  stock of HP or any
     securities  convertible or  exchangeable  or exercisable  for any shares of
     stock of any class of capital  stock of HP. HP has no  treasury  stock that
     has not been  canceled as of the date hereof.  Except for the  transactions
     contem  plated  by  this  Agreement,   there  are  not  any  agreements  or
     understandings  among HP's  stockholders to which HP is a party or by which
     it is bound  with  respect  to the  voting of shares of the HP Stock on any
     matter. The HP Stock is subject to no pledge or other lien to which HP is a
     party or by which it is bound.  No shares  of the  capital  stock of HP are
     reserved for any  purpose,  except  stock  reserved  for issuance  upon the
     exercise of  outstanding  options as  described  above and except for stock
     reserved  for  issuance to  third-party  purchasers  of HP as  described in
     Exhibit 3.2B; there are no preemptive or similar rights with respect to the
     issuance,  sale or other transfer (whether present,  past or future) of the
     capital  stock of HP and  there  are no  agreements  or  other  obligations
     (contingent  or  otherwise)  which may require HP to issue,  repurchase  or
     otherwise  acquire any shares of its capital stock or any other securities.
     There are no outstanding or authorized stock  appreciation/phantom stock or
     similar  rights with  respect to HP.  Except as set forth on Exhibit  3.2B,
     there  are  no  voting  trusts,   proxies,   or  any  other  agreements  or
     understandings  to which HP is a party or by which it is bound with respect
     to the voting stock of HP.


13






<PAGE>


                                                      -14-

         3.3 Subsidiaries,  Affiliates,  Affiliated Companies and Joint Venture.
Except as set forth on Exhibit  3.3,  neither  Constituent  Corporation  has any
direct  or  indirect  ownership  interest  in,  by way  of  stock  ownership  or
otherwise, any corporation, association or business enterprise.

         3.4  Financial Statements.

(a)  Exhibit 3.4A  consists of the  following  financial  statements of HSI: (i)
     balance  sheet of HSI at December  31, 1995 and the  related  statement  of
     operations,  stockholders'  equity  and cash flow for the year then  ended,
     together with the opinion thereon of Baker,  Newman & Noyes, LLC, certified
     public  accountants;  (ii)  unaudited  balance sheet of HSI at December 31,
     1996 and the related  state ment of  operations,  stockholders'  equity and
     cash flow for the year then ended; and (iii) the unaudited balance sheet of
     HSI as of April 30, 1997 and  unaudited  statement of operations of HSI for
     the four months then ended (the audited and unaudited financial  statements
     and the related notes being herein called "HSI Financial Statements").

(b)  Exhibit 3.4B  consists of the  following  financial  statements  of HP: (i)
     balance sheet of HP at December 31, 1995, and at December 31, 1996, and the
     related statement of operations, stockholders' equity and cash flow for the
     years then  ended,  together  with the opinion  thereon of Baker,  Newman &
     Noyes,  LLC,  certi fied  public  accountants  for the fiscal  year  ending
     December  31,  1995 and of Ernst & Young,  LLP for the fiscal  year  ending
     December 31, 1996;  and (ii) the unau dited balance sheet of HP as of April
     30, 1997 and  unaudited  statement of  operations of HP for the four months
     then ended (the audited and unaudited financial  statements and the related
     notes being herein  called "HP  Financial  State  ments";  the HP Financial
     Statements  together with the HSI  Financial  Statements  are  collectively
     referred to herein as the "Constituent Corporation Financial Statements").

The  Constituent  Corporation  Financial  Statements  have been  based  upon the
information  contained in the books and records of Constituent  Corporation  and
present fairly the financial condition of the relevant  Constituent  Corporation
as at the  respective  dates thereof and the results of its  operations  for the
periods  ended  at the  respective  dates  thereof,  in each  case  prepared  in
conformity with generally accepted accounting principles applied on a consistent
basis throughout the periods involved and with prior periods, except that in the
unaudited  portion of the Constituent  Corporation  Financial  Statements do not
contain certain  footnote  information.  The Constituent  Corporation  Financial
Statements  do not contain any  material  inaccuracy  and do not suffer from any
material omissions.





<PAGE>


                                                      -15-

         3.5  Absence of  Undisclosed  Liabilities.  Except as and to the extent
reflected  or  reserved  against  in  the  Constituent   Corporation   Financial
Statements and except for liabilities,  commitments and obligations  incurred in
the ordinary course of business  accruing after April 30, 1997 and except as set
forth on Exhibit 3.5 , the Constituent Corporations as of April 30, 1997 had, or
will have at Closing,  no liabilities,  claims or obligations  (whether accrued,
absolute,  contingent,  unliquidated  or otherwise,  whether or not known to the
Constituent  Corporations  or  any  directors,  officers  or  employees  of  the
Constituent  Corporations,  whether due to become payable and regardless of when
or by whom asserted) which would be required to be reflected in a balance sheets
of the Constituent Corporations or the notes thereto prepared in accordance with
GAAP. .
         3.6 Letters of Credit. Except as disclosed in Exhibit 3.6 hereto, there
are no  outstand  ing  letters  of  credit  issued  at  the  request  of  either
Constituent  Corporation  to any  suppliers  or obligees  of either  Constituent
Corporation with respect to the operations of either Constituent Corporation.

         3.7 Absence of Certain Recent Changes.  Except as expressly provided in
this  Agreement  or  as  set  forth  on  Exhibit  3.7  in   alphabetical   order
corresponding  to the following  subsections,  since April 30, 1997, and through
the Closing Date, neither Constituent Corporation has been nor will have:

         (a)      except  in the  usual and  ordinary  course  of its  business,
                  consistent with past practice, and in an amount which is usual
                  and  normal   incurred  any   indebtedness,   guaranteed   any
                  indebtedness or sold any of its assets;

         (b)      suffered any damage,  destruction or casualty loss, whether or
                  not covered by insurance, in excess of $10,000;

         (c)      suffered  the   resignation   or  other   termination  of  any
                  management personnel of either Constituent Corporation, or the
                  loss of or other  termination of a business  relationship with
                  any material customers or suppliers of the Constituent Corpora
                  tions' businesses, taken as a whole;

         (d)      increased  the regular rate of  compensation  payable by it to
                  any employee, stock holder, or any physician other than normal
                  merit and cost of living  increases  gran ted in the  ordinary
                  course of business;  or increased such  compensation by bonus,
                  percentage,  compensation service award or similar arrangement
                  theretofore  in  ef  fect  for  the  benefit  of  any  of  its
                  employees, and no such increase is required;

         (e)      established or agreed to establish,  amended or terminated any
                  pension,  retirement  or welfare plan or  arrangement  for the
                  benefit of its employees not theretofore in effect;

15





<PAGE>


                                                      -16-

         (f)      suffered  any  change  in  its  financial  condition,  assets,
                  liabilities,  operations,  business,  prospects or business or
                  suffered any other event or condition of any  character  which
                  individually  or in  the  aggregate  has,  or  might  have,  a
                  material ad verse effect on the Constituent Corporations;

         (g)      issued any shares of stock of any class,  or made,  granted or
                  entered into any subscriptions, options, warrants, convertible
                  securities,  rights, calls, agreements,  commitments or rights
                  affecting  or  relating  in  any  manner   whatsoever  to  any
                  equitable  interests in either  Constituent  Corporation other
                  than as expressly contemplated by this Agreement;

         (h)      declared  or paid any  dividend or other  distribution  on any
                  class of its capital stock or purchased or redeemed any of its
                  capital stock;

         (i)      made any  direct or  indirect  purchase,  redemption  or other
                  acquisition  by  such  Constituent   Corporations,   made  any
                  commitment, plan or agreement by such Constituent Corporations
                  to purchase,  redeem or otherwise  acquire any shares of their
                  capital stock or other equitable interests;

         (j)      experienced  any  labor  organizational  efforts,  strikes  or
                  complaints  other than  grievance  procedures  in the ordinary
                  course of business or entered into any  collective  bargaining
                  agreements with any union;

         (k)      made any single capital  expenditure which exceeded $10,000 or
                  made aggregate capital expenditures which exceeded $25,000;

         (l)      except  with  respect  to liens  or  encumbrances  arising  by
                  operation  of law,  permit  ted or  allowed  any of its assets
                  (real,  personal  or  mixed,  tangible  or  intangible)  to be
                  subjected to any mortgage,  pledge,  lien,  security interest,
                  encumbrance, restric tion or charge of any kind;

         (m)      written down the value of any of its assets, or written off as
                  uncollectible  any notes or  accounts  receivable,  except for
                  write-downs and write-offs in the ordi nary course of business
                  and consistent with past practice,  none of which are material
                  to the Constituent Corporations, taken as a whole, or revalued
                  any of its assets;

         (n)      paid,  discharged  or  satisfied  any claims,  liabilities  or
                  obligations  (absolute,  ac crued,  contingent  or  otherwise)
                  other than in the usual and ordinary course of business;





<PAGE>


                                                      -17-

         (o)      suffered  any  extraordinary  losses,  canceled  any  debts or
                  waived any claims or rights of substantial  value,  whether or
                  not in the usual and ordinary course of bus iness;

     (p) paid,  lent or advanced any amount to, or sold,  transferred  or leased
any properties or assets (real,  personal or mixed,  tangible or intangible) to,
or entered into any agreement or  arrangement  with,  any  stockholder of either
Constituent   Corporation  or  any  of  the  officers  or  directors  of  either
Constituent  Corporation  or of any "af  filiate" or  "associate"  of any of its
officers or directors (as such terms are defined in the rules and regulations of
the  Securities  and Exchange  Commission  under the  Securities Act of 1933, as
amended),  except for reimbursement of ordinary and reasonable business expenses
related to the business of one of the Constituent  Corporations and compensation
to officers at rates not exceeding the rates of  compensation  at April 30, 1997
or except as expressly contemplated by this Agreement;

         (q)      amended, terminated or otherwise altered (whether by action or
                  inaction)  any contract,  agreement or license of  significant
                  value  to which  either  Constituent  Corporation  is a party,
                  except in the ordinary course of business;

         (r)      entered into a material transaction other than in the ordinary
                  course  of  business  or made  any  change  in any  method  of
                  accounting or accounting practice;

         (s)      canceled, or failed to continue, insurance coverages; or

         (t)  agreed,  whether  in  writing  or  otherwise,  to take any  action
described in this ss. 3.7.

         3.8 Title to  Assets.  Neither  Constituent  Corporation  owns any real
property.  The owned  personal  property is subject to no liens or  encumbrances
except the security  interests of record set forth on Exhibit 3.8 of the Exhibit
Volume,  which  Exhibit is a copy of a Uniform  Commer  cial Code search as of a
recent date duly obtained by the Constituent Corporations and which search shows
security  interests of record  relating to such assets in every place where such
security  interests are legally  required to be filed and includes copies of all
such financing state ments.  All of the assets of the  Constituent  Corporations
other than goodwill have a fair market or realizable value at least equal to the
value thereof as reflected in the Constituent Corporation Financial Statements.

         3.9  Contracts.  Exhibit 3.9 of the Exhibit  Volume  contains a copy of
each contract, lease, agreement and other instrument to which either Constituent
Corporations is a party or is bound which involves an unperformed  commitment or
obligation  (contingent or otherwise) of more than $25,000 in the  aggregate.  A
complete and correct copy of each such contract, lease, agreement and instrument
has been made available to ProMedCo. Except as noted in such

17





<PAGE>


                                                      -18-

Exhibit,  (i) all such  contracts,  leases and  agreements are in full force and
effect,  (ii)  there  has  been,  to the best of the  Constituent  Corporations'
knowledge,  no threatened cancellation thereof, and (iii) there are, to the best
of the Constituent  Corporations' knowledge, no outstanding disputes thereunder.
Except as described in Exhibit 3.9, there are no employment  agreements or other
agreements to which either Constituent Corporation is a party or by which either
Constitu ent  Corporation is bound that contain any severance or termination pay
liabilities or obligations.

         Except for contracts,  leases,  agreements and instruments contained in
Exhibit 3.9 or listed in the other  Schedules  hereto  (and except for  purchase
contracts and orders for inventory in the ordinary course of business consistent
with past practice),  neither Constituent Corporation is, as of the date of this
Agreement, a party to or bound by any:

(a)  material agreement or contract not made in the ordinary course of business;

(b)  employee collective  bargaining  agreement or other contract with any labor
     union;

(c)  covenant not to compete;

(d)  lease or similar agreement under which either Constituent  Corporation is a
     lessor or sublessor of any material real property owned or leased by one of
     the Constitu ent Corporations or any portion of premises otherwise occupied
     by one of the Constituent Corporations;

(e)  (i) lease or  similar  agreement  under  which  (A) one of the  Constituent
     Corpora  tions is lessee of, or holds or uses,  any  machinery,  equipment,
     vehicle or other tangible  personal  property owned by a third party or (B)
     one of  the  Constituent  Corporations  is a  lessor  or  sublessor  of any
     tangible  personal  property owned by one of the Constituent  Corporations,
     (ii) continuing contract for the future purchase of materials,  supplies or
     equipment, or (iii) management,  service,  consulting or other similar type
     of  contract,  in any such case which has a future  liability  in excess of
     $25,000, and which is not terminable by such Constituent  Corporation for a
     cost of less than $10,000;

(f)  license  or other  agreement  relating  in whole or in part to,  trademarks
     (including,  but not limited to, any license or other agreement under which
     such Constituent Corporations has the right to use any of the same owned or
     held by a third party);

(g)  agreement or contract under which such Constituent Corporation has borrowed
     or lent any money or issued any note, bond,  indenture or other evidence of
     indebted   ness  or  directly  or   indirectly   guaranteed   indebtedness,
     liabilities  or  obligations  of others  for an amount in excess of $10,000
     (other than (i) endorsements for the




<PAGE>


                                                      -19-

purpose of collection  in the ordinary  course of business,  (ii)  agreements or
     contracts  between  the  Constituent  Corporations,  and (iii)  advances to
     employees of one of the Constituent  Corporations in the ordinary course of
     business);

(h)  mortgage,  pledge,  security  agreement,  deed of trust  or other  document
     granting a lien (including liens upon properties acquired under conditional
     sales,  capital  leases or other title  retention  or security  devices but
     excluding  operating leases) other than liens reflected in the notes to the
     Constituent Corporation Financial Statements; or

(i)  other  agreement,  contract,  lease,  license,  commitment or instrument to
     which  such  Constituent  Corporation  is a party  or by or to  which  such
     Constituent  Corpora tions or any of its assets or businesses  are bound or
     subject,  which has an aggregate  future liability in excess of $10,000 and
     is not terminable by such Constituent  Corporations for a cost of less than
     $10,000.

         3.10 Defaults.  Neither Constituent  Corporation is in material default
under,  nor has any event occurred which,  with the lapse of time or action by a
third  party,   would  constitute  a  material  default  under  any  outstanding
indenture, mortgage, contract instrument, or agreement to which such Constituent
Corporation is a party or by which such  Constituent  Corporation is bound.  The
execution, delivery and performance of this Agreement by the Constituent Corpora
tions and the  consummation by the Constituent  Corporations of the transactions
contemplated by this Agreement will not (i) violate,  subject to compliance with
the applicable  requirements of the Maine Insurance Holding Company Act, federal
and state  securities  laws any  provision  of, or result in the  breach  of, or
constitute  a default  under,  any law the  violation of which would result in a
significant  liability to either  Constituent  Corporation,  or any order, writ,
injunction or decree of any court,  governmental agency or arbitration tribunal;
(ii)  constitute  a material  violation  of or a material  default  under,  or a
material  conflict with, any term or provision of the Articles of  Incorporation
or  by-laws  of either  Constituent  Corporation  or any  contract,  commitment,
indenture,  lease,  instrument  or other  agreement to which either  Constituent
Corporation is a party or is bound; or (iii) cause, or, to the best knowledge of
the Constituent  Corporations,  give any party grounds to cause (with or without
notice, the passage of time or both) the maturity of any liability or obligation
of  either  Constituent  Corporation  to be  accelerated  or  increase  any such
liability or obligation.

         3.11  Inventory.  All  inventory of the  Constituent  Corporations,  as
reflected in the  Constituent  Corporation  Financial  Statements  or otherwise,
consists of a quality and quantity usable and saleable in the ordinary course of
business  and is  carried  on the  balance  sheet  included  in the  Constituent
Corporation  Financial  Statements  at the lower of cost or  market,  except for
items of obsolete  materials and  materials of below  standard  quality,  all of
which have been written down in the balance  sheet  included in the  Constituent
Corporation  Financial  Statements  to  realizable  market  value  or for  which
adequate reserves have been provided in the

19






<PAGE>


                                                      -20-

balance sheet included in the Constituent Corporation Financial Statements.  The
present quantity of all inventory of the Constituent  Corporations is reasonable
and warranted in the present  circumstances  of the businesses  conducted by the
Constituent Corporations.  The only transactions related thereto since April 30,
1997 have been additions or sales in the ordinary course of business.

         3.12 Equipment.  All assets of the Constituent  Corporations consisting
of  equipment,  whether  reflected  in  the  Constituent  Corporation  Financial
Statements or otherwise,  are well  maintained and in good operating  condition,
except for reasonable wear and tear and except for items which have been written
down in the Constituent  Corporation Financial Statements to a realizable market
value or for which  adequate  reserves  have been  provided  in the  Constituent
Corporation Financial Statements.  The present quantity of all such equipment of
the Constitu ent  Corporations is reasonable and warranted in the present course
of  the  businesses  conducted  by  the  Constituent   Corporations.   The  only
transactions  related thereto since April 30, 1997, have been additions  thereto
in the ordinary  course of business.  Exhibit 3.12  contains a list of equipment
additions since April 30, 1997.

         3.13 Investments. Except as reflected in the balance sheet of April 30,
1997 contained in the  Constituent  Corporation  Financial  Statements,  neither
Constituent  Corporation has any  investments in, and does not have  outstanding
any advances to, any other firms, persons or corporations.

         3.14 Receivables.  All notes and accounts receivable of the Constituent
Corporations  shown on the  April  30,  1997  balance  sheets  contained  in the
Constituent  Corporation  Financial  Statements and all those arising since such
date have arisen in the  ordinary  course of business.  As of the  Closing,  the
notes  and  accounts   receivable  of  the  Constituent   Corporations  will  be
collectible in the ordinary  course of business  without resort to litigation or
subjection  to  counterclaim  or offset as follows:  (a) the notes and  accounts
receivable  set forth on the April  30,  1997  balance  sheet  contained  in the
Constituent Corporation Financial Statements less the reserves for uncollectible
notes and accounts receivable set forth on the balance sheet, (b) plus the notes
and accounts  receivable  of the  Constituent  Corporations  arising since their
respective  balance  sheet  dates,  (c) less the notes and  accounts  receivable
referred to in (a) and (b) which have been  collected  prior to the Closing Date
and less a reserve for  uncollectible  notes and accounts arising  subsequent to
the balance sheet dates which bears the same ratio to said subsequent  notes and
accounts as the  reserves  set forth on the balance  sheet bear to the notes and
accounts receivable set forth on such balance sheets.

         3.15 Powers of Attorney.  Exhibit 3.15 lists any outstanding  powers of
attorney related to either  Constituent  Corporation and a summary  statement of
the terms thereof.




<PAGE>


                                                      -21-

         3.16  Guarantees.  Included as Exhibit 3.16 in the Exhibit  Volume is a
list and brief  description  of all  guarantee  and matters of suretyship of the
Constituent Corporations.

         3.17  Permits and  Licenses.  Included  as Exhibit  3.17 in the Exhibit
Volume is a schedule of permits  and  licenses,  listing and briefly  describing
each permit,  license or similar authorization from each governmental  authority
issued with respect to the  operation or owner ship of properties by each of the
Constituent  Corporations  together  with  the  designation  of  the  respective
expiration  dates  of  each,  and  also  listing  and  briefly  describing  each
association  in  which  either  Constituent  Corporation  is a  member  and each
association or governmental au thority by which either  Constituent  Corporation
is accredited or otherwise recognized.  To the best knowledge of the Constituent
Corporations,   neither  Constituent  Corporation  is  required  to  obtain  any
additional  permits,  licenses  or similar  authorizations  (including,  without
limitation, any additional certificates of need) from any governmental authority
for the proper conduct of its business or to become a member of or accredited by
any  association or  governmental  authority  other than those listed on Exhibit
3.17 in the Exhibit Volume except where failure to obtain such license,  permit,
accreditation  or  membership  would not have a material  adverse  effect on the
Constituent  Corporations,  taken as a whole. All of such permits,  licenses and
authorizations  listed on Exhibit 3.19 are valid and in full force and effect in
accordance with their respective terms.

         3.18 Bank  Accounts.  Exhibit 3.18 of the Exhibit  Volume is a true and
complete  list as of the date  hereof of all banking  institutions  in which the
Constituent  Corporation have accounts,  lines of credit,  letters of credit, or
safety  deposit  boxes,  plus the  numbers  thereof and the names of the persons
authorized to have access thereto.

         3.19  Intangible  Property  Rights.  Exhibit  3.19A lists all  patents,
patent applications,  inventions,  licenses,  trade names,  trademarks,  service
marks,  brandmarks,   copyrights  or  registrations  or  applications  therefor,
franchises  and other assets of like kind (such assets and rights  herein called
"Rights"), used in the business of either Constituent Corporation,  or which are
registered in the name of either Constituent Corporation.  The expiration dates,
if any, of each of the Rights are also set forth in Exhibit  3.19A.  Each of the
Constituent  Corporations owns and possesses or has valid,  existing and legally
binding  property  rights or  licenses  to all Rights used in the conduct of its
business;  such Rights are  adequate  for the conduct of the business of each of
the  Constituent  Corporations  and  will  not  be  adversely  affected  by  the
transactions   contemplated   hereby;  and,  to  the  best  of  the  Constituent
Corporations'  knowledge,  any Rights owned by such Constituent  Corporation are
not  being  infringed  or  violated  by any  other  person  or  entity.  Neither
Constituent  Corporation  has  granted any  licenses  thereunder  to others.  No
products sold by either Constituent  Corporation  infringe the Rights of others.
All licenses granted to either Constituent Corporation by others with respect to
its  business  are set forth in the  Exhibit  3.19B.  No  holder  of any  equity
security, general or limited partner, or director, officer, employee or agent of
such owns,  directly or  indirectly,  in whole or in part,  any Rights which the
business  of either  Constituent  Corporation  has used,  or the use of which is
necessary

21





<PAGE>


                                                      -22-

for  the  business  of  such  Constituent  Corporation  as now  conducted.  Each
Constituent  Corpora  tion  owns or has  valid,  existing  and  legally  binding
property rights or licenses to all technology, data, processes,  formulas, trade
secrets  and the like  used in the  operation  of its  business  (herein  called
"Know-How"),  free of any equities,  claims, liens or encumbrances,  and neither
Constitu ent Corporation has granted any license or right thereto to others.

         3.20  Assets  Necessary  to  Business.   Each  Constituent  Corporation
presently has and at Closing will have good and  marketable  title to all of its
property and assets, real, personal and mixed, tangible and intangible.

         3.21  Litigation,  etc.  Except  as set  forth in  Exhibit  3.21 of the
Exhibit  Volume,  there is no  material  litigation,  arbitration,  governmental
claim,  investigation  or  proceeding  pending or, to the best  knowledge of the
Constituent  Corporations,  threatened against either Constituent Corporation at
law or in equity,  before any court,  arbitral tribunal or governmental  agency.
There is no reasonable  basis for material  claims to be hereafter  made against
either Constituent Corporation,  except as set forth in Exhibit 3.23. All claims
and  litigations  against either  Constituent  Corporation  are fully covered by
insurance, except as set forth in Exhibit 3.23.

         3.22 Court Orders,  Decrees and Laws.  There is not  outstanding or, to
the best knowledge of the Constituent Corporations,  threatened any order, writ,
injunction or decree of any court,  governmental agency or arbitration  tribunal
against or affecting either  Constituent  Corporation or any of its assets which
would  materially  interfere  with its  ability to conduct  its  business.  Each
Constituent  Corporation is in material  compliance with all applicable federal,
state and local laws,  regulations and administrative  orders which are material
to its business, and neither Constituent Corporation has received any notices of
alleged  violations  thereof except as disclosed in Exhibit 3.22 hereof.  To the
best knowledge of the Constituent Corporations,  no governmental authorities are
presently conducting  proceedings against either Constituent  Corporation and no
such investigation or proceeding is pending or being threatened.

         3.23  Taxes.

(a)  For purposes of this  Agreement,  "Tax" or "Taxes" shall mean taxes,  fees,
     levies, duties, tariffs,  imposts, and governmental  impositions or charges
     of any kind in the nature of (or similar to) taxes, payable to any federal,
     state, local or foreign taxing authority,  including  (without  limitation)
     (i) income,  franchise,  profits,  gross receipts,  ad valorem,  net worth,
     value  added,  sales,  use,  service,  real or personal  property,  special
     assessments,  capital stock, license,  payroll,  with holding,  employment,
     social security, workers' compensation, unemployment compensation, utility,
     severance,  production,  excise,  stamp,  occupation,  premi ums,  windfall
     profits,  transfer  and gains taxes,  and (ii)  interest,  penalties,  addi
     tional taxes and additions to tax imposed with respect thereto; and "Tax Re
     turns" shall mean returns, reports, and information statements with respect
     to Taxes required to be filed with the IRS or any other  federal,  foreign,
     state or  provincial  taxing  authority,  domestic or  foreign,  including,
     without limitation, consolidated, combined and unitary tax returns.

(b)  Other than as  disclosed  in  Exhibit  3.23A,  (i) Each of the  Constituent
     Corporations  has filed all Tax  Returns  required  to be filed by it, (ii)
     each of the Constituent  Corporations has paid and discharged all Taxes due
     in connection with or with respect to the periods or  transactions  covered
     by such Tax Returns  and have paid all other Taxes as are due,  except such
     as are being  contested in good faith by  appropriate  proceedings  (to the
     extent that any such  proceedings  are  required) and with respect to which
     such Constituent  Corporation is maintaining  adequate reserves,  and (iii)
     there  are no  other  Taxes  that  would  be due if  asserted  by a  taxing
     authority,  except with respect to which such  Constituent  Corporation  is
     maintaining reserves to the extent currently required unless the failure to
     do so could not reasonably be expected to have a material  adverse  effect.
     Except  as does not  involve  or would  not  result  in  liability  to such
     Constituent  Corporation  that  could  reasonably  be  expected  to  have a
     material adverse effect: (i) there are no tax liens on any assets of either
     Constituent  Corporation;  and (ii)  neither  Constituent  Corporation  has
     granted any waiver of any statute of  limitations  with  respect to, or any
     extension  of a period for the  assessment  of, any Tax.  The  accruals and
     reserves  for  Taxes  (including   deferred  taxes)  reflected  in  on  the
     Constituent Corporation Financial Statements are sufficient for the payment
     of all  unpaid  federal,  state,  county  and local  taxes  accrued  for or
     applicable to all periods (or portions thereof) ending immediately prior to
     the  consummation  of  the  transactions  contemplated  by  this  Agreement
     (including  interest  and  penalties,  if  any,  thereon  and  Taxes  being
     contested) in accordance with generally accepted accounting principles.

(c)  Neither  Constituent  Corporation  is, or has been,  a United  States  real
     property holding  corporation (as defined in Section 897(c)(2) of the Code)
     during the applicable period specified in Section  897(c)(1)(A)(ii)  of the
     Code. Neither Constituent Corporation owns any property of a character, the
     indirect transfer of which, pursuant to this Agreement,  would give rise to
     any material documentary, stamp or other transfer tax.

(d)  Copies of each of the Constituent  Corporation's last two federal state and
     local  income tax  returns  are  included  as Exhibit  3.23B of the Exhibit
     Volume. Each Constituent Corporation has withheld from each payment made to
     employees  of  such  Constituent   Corporation  the  amount  of  all  taxes
     (including,  but not limited to, federal,  state and local income taxes and
     Federal Insurance Contribution Act taxes) required to be withheld therefrom
     and all amounts customarily withheld




<PAGE>


                                                      -23-

therefrom,  and have set aside  all other  employee  contributions  or  payments
     customarily  set aside with respect to such wages and have paid or will pay
     the same to, or have  deposited  or will deposit  such  payment  with,  the
     proper tax receiving  officers or other  appropriate  authorities.  Neither
     Constituent Corpora tion will be required as a result of a change in method
     of accounting  for a taxable  period ending on or prior to the Closing Date
     to include any  adjustment  in taxable  income for any  taxable  period (or
     portion  thereof)  beginning  after the Closing Date.  Neither  Constituent
     Corporation  has  been a member  of an  affiliated  group  (as  defined  in
     ss.1504(a)  of  the  Code)  other  than  one  of  which  such   Constituent
     Corporation  was the common parent.  Neither  Constituent  Corporation is a
     party  to or bound  by any tax  sharing  agreement  or has any  current  or
     potential  contrac  tual  obligation  to  indemnify  any other  person with
     respect to taxes.  Neither  Constituent  Corporation  is, nor will  become,
     obligated as a result of the transac tions  contemplated  by this Agreement
     so long as such transactions qualify as tax-free reorganizations (under any
     contract  entered into on or before the Closing  Date) to make any payments
     that will be non-deductible under ss.280G of the Code.

         3.24  Immigration  Act. Each  Constituent  Corporation is in compliance
with the terms and provisions of the Immigration  Act in all material  respects.
For each  employee  (as  defined in 8 C.F.R.  274a.1(f))  of either  Constituent
Corporation for whom  compliance  with the Immigra tion Act by such  Constituent
Corporation is required,  such Constituent Corporation has obtained and retained
a complete and true copy of each such employee's  Form I-9 (Employment  Eligibil
ity Verification Form) and all other records or documents prepared,  procured or
retained by such Constituent  Corporation pursuant to the Immigration Act. There
are no  violations  or potential  violations  of the  Immigration  Act by either
Constituent Corporation.  Neither Constituent Corporation has been cited, fined,
served with a Notice of Intent to Fine or with a Cease and Desist Order, nor, to
the  Constituent  Corporations'  knowledge,  has any  action  or  administrative
proceeding been initiated or threatened against either Constituent  Corporation,
by reason of any actual or alleged failure to comply with the Immigration Act.

         3.25  ERISA.

(a)  Except as listed in Exhibit 3.25 of the Exhibit Volume, neither Constituent
     Corporation has any "employee benefit plans", as such term is defined under
     Section 3(3) of the Employee  Retirement  Income  Security Act of 1974,  as
     amended  ("ERISA"),  or any other plan or similar  arrangement,  written or
     other wise, which provides any type of pension or welfare benefit to any of
     its directors, employees, or former employees.


23






<PAGE>


                                                      -24-

(b)  With respect to all of the plans listed in Exhibit  3.25,  the  Constituent
     Corporations  have has  delivered to ProMedCo  true and exact copies of (i)
     all plan docu ments  embodying the provisions of such plans,  together with
     all amendments thereto, (ii) all summary plan descriptions and summaries of
     material modifica tions pertaining thereto, (iii) copies of the most recent
     Internal Revenue Service  determination  letters,  if any, relating to such
     plans,  (iv) copies of the last three (3) years'  Annual  Report (Form 5500
     series),  required to be filed with respect to such plans with the Internal
     Revenue  Service,  together with all  Schedules  and attach ments  thereto,
     including,  without limitation,  copies of the plan audits and/or actuarial
     valuations,  (v) copies of all contract  administration  agreements between
     either  Constituent  Corporation and third party  administrators,  and (vi)
     copies of all participant-related forms currently in use in connection with
     such plans including,  without limitation,  salary reduction agreements and
     beneficiary designations.

(c)  No "prohibited transaction",  as such term is defined under Section 4975(c)
     of the Code or under Section 406 of ERISA,  and the respective  regulations
     thereunder,  has  occurred or is occurring  with  respect to any  "employee
     benefit plan" main tained by either Constituent Corporation or with respect
     to any trustee or adminis trator thereof.

         3.26  Pension, etc.

(a)  Neither  Constituent  Corporation  has ever  maintained or been required to
     contrib ute to a pension plan subject to Title IV of ERISA.

(b)  With respect to each "employee  benefit pension plan" within the meaning of
     ERISA Section 3(2) listed on Exhibit  3.25,  there are not in existence any
     liabilities  other than those liabilities shown on the Annual Reports (Form
     5500 series)  delivered  to ProMedCo in  connection  herewith.  No material
     change with respect to the matters covered by the most recent Annual Report
     for each Pension Plan has occurred since the filing date thereof. The terms
     and operation of each Pen sion Plan have  complied,  and are in compliance,
     with the  applicable  provisions  of ERISA and the Code.  All Pension Plans
     have at all times been and are qualified  under Section 401(a) of the Code,
     except for those  Pension  Plans set forth in Exhibit  3.26 of the  Exhibit
     Volume.  None of the Pension Plans listed in Exhibit 3.25 is unfunded.

         3.27 Employee Matters.  Included as Exhibit 3.27A of the Exhibit Volume
is a list of all  employees of the  Constituent  Corporations.  The  Constituent
Corporations  have made  available  in writing to ProMedCo  the annual  rates of
compensation of all such employees, including a list of all people who were paid
bonuses in the last twelve months plus the amount




<PAGE>


                                                      -25-

thereof.  Except as set forth in Exhibit 3.9, no written employment agreement to
which either Constituent Corporation is a party requires longer than a four-week
notice  before  termination  or agreement to lend to or guarantee any loan to an
employee or an agreement  relating to a bonus,  severance  pay or similar  plan,
agreement, arrangement or understanding.  Exhibit 3.27B of the Exhibit Volume is
a brief description of employee benefits of each Constituent Corporations.

         3.28  Insurance and Bonds.  Exhibit 3.28 contains a description  of all
fire,  liability and other  insurance  coverage  maintained by each  Constituent
Corporation  during the past two years,  including  the  amounts  and losses and
risks  covered.  All of the  foregoing  insurance  policies  are with  reputable
companies  and are fully paid as to all premiums  heretofore  due.  Exhibit 3.28
also contains a list and brief  description of all bonds outstanding on the date
hereof which either Constituent  Corporation has furnished or otherwise provided
in connection  with the operation of its business,  including but not limited to
any performance  bonds, bid bonds,  fidelity bonds,  completion bonds, labor and
material  payment  bonds,  and bonds required by any Federal,  state,  county or
local laws, together with the respective amounts of the bonds and the applicable
corporate  or other  surety.  Such bonds are in such  amounts,  and against such
losses and risks,  as are generally  maintained for comparable  businesses.  The
Constituent  Corporations  have delivered to ProMedCo true and correct copies of
all such bonds.

         3.29 Labor Matters.  There are no collective bargaining agreements with
any labor union to which either  Constituent  Corporation is a party or by which
it is bound, and neither Constituent Corporation is currently negotiating with a
labor union. No employees of either Constituent Corporation have ever petitioned
for a  representation  election.  Each  Constituent  Corporation  is in material
compliance  with all  applicable  laws  respecting  employment  and em  ployment
practices,  terms and conditions of employment  and wages and hours,  and is not
engaged  in any  unfair  labor  practice.  There  is no  unfair  labor  practice
complaint  against either  Constituent  Corporation  pending before the National
Labor Relations Board. There is no labor strike,  dispute,  slowdown or stoppage
actually  pending or, to its knowledge,  threatened  against or affecting either
Constituent Corporation. No grievance which might have a material adverse effect
on the  Constituent  Corporations,  taken as a whole,  or the  conduct  of their
businesses  nor  any  such  arbitration  proceeding  arising  out  of  or  under
collective  bargaining  agreements  is  pending  and,  to the  knowledge  of the
Constituent   Corporations,   no  claim  therefor  exists.  Neither  Constituent
Corporation has  experienced  any employee  strikes during the last three years.
The Constituent  Corporations  ProMedCo of any such labor dispute,  petition for
representative  election or negotiations  with any labor union which shall arise
before the  Closing  Date.  Except as may be required by ss.4980B of the Code or
applicable state health care continuation coverage statutes, neither Constituent
Corporation  has any  liability  under any plan or  arrangement  which  provides
welfare benefits, including medical and life insurance, to any current or future
retiree or terminated employee.


25






<PAGE>


                                                      -26-

         3.30 Improper Payments. Neither Constituent Corporation nor any officer
or employee of either Constituent Corporation have made any bribes, kickbacks or
other improper payments on behalf of either Constituent  Corporation or received
any such  payments from vendors,  suppliers or other  persons  contracting  with
either Constituent Corporation.

         3.31 Books of Account; Reports. The books of account of the Constituent
Corpora  tions are accurate and complete in all material  respects and have been
maintained in accordance with applicable sound business practices.

         3.32 No Finders or Brokers.  Neither  Constituent  Corporation  nor any
officer or director of either Constituent  Corporation has engaged any finder or
broker in connection with the transactions contemplated hereunder.

         3.33  Insider   Transactions.   There  are  no  contracts,   leases  or
commitments  to  which  either  Constituent  Corporation  is a party or by which
either  Constituent  Corporation  is bound,  directly  or  indirectly,  with any
director  of either  Constituent  Corporation  or any Vice  President  or higher
officer of either Constituent  Corporation or any Affiliate of any such director
or officer aside from the employment agreements included in Exhibit 3.9.

         3.34 Authority;  Binding Effect.  Subject to shareholder approval,  the
execution,  delivery and performance of this Agreement and all other agreements,
instruments  and docu  ments  contemplated  hereby and the  consummation  of the
transactions  contemplated  hereby have been duly  authorized  by all  necessary
corporate action of each Constituent  Corporation,  and no other  proceedings or
actions on the part of either Constituent Corporation are necessary to authorize
this Agreement and the  consummation of the  transactions  contemplated  hereby.
This  Agreement  has  been  duly  executed  and  delivered  by each  Constituent
Corporation.  This Agreement constitutes the valid and binding agreement of each
Constituent  Corporation enforceable in accordance with its terms (except as the
same may be  restricted,  limited or delayed by  applicable  bankruptcy or other
laws  affecting  creditors'  rights  generally  and  except as to the  remedy of
specific  performance  which  may not be  available  under  the laws of  various
jurisdictions) assuming that this Agreement has been duly authorized,  delivered
and executed by ProMedCo and  MergerSub  and  constitutes  the valid and binding
obligation of ProMedCo and MergerSub  enforceable against ProMedCo and MergerSub
in accordance  with its terms  (except as  enforceability  against  ProMedCo and
MergerSub may be  restricted,  limited or delayed to the same extent as referred
to in the parenthetical phrase immediately above).

         3.35 Consents and Approvals of  Governmental  Authorities.  No consent,
approval or authorization  of, or declaration,  filing or registration  with any
governmental  or  regulatory  authority  is  required  in  connection  with  the
execution and delivery of this Agreement by either  Constituent  Corporation and
the consummation of the transactions  contemplated  hereby except for filing and
recording of appropriate merger documents and issuance of a Certificates of




<PAGE>


                                                      -27-

Merger as  required  by the law of the State of  Maine,  the  filing of a Form A
regarding the change of ownership with, and obtaining approval thereof from, the
Maine Bureau of Insurance.

         3.36  Disclosure.  No  representation  or warranty  by the  Constituent
Corporations  in  this  Agreement  and no  statement  in this  Agreement  or any
document or  certificate  furnished or to be furnished to ProMedCo and MergerSub
pursuant hereto contains or will contain any untrue statement of a material fact
or omits or will omit to state a material  fact  necessary  in order to make the
statements contained therein not misleading.  The Constituent  Corporations have
dis closed to ProMedCo all facts known to the Constituent  Corporations material
to the assets, liabilities,  business, operation and property of the Constituent
Corporations. There are no facts known to the Constituent Corporations unique to
the Constituent  Corporations not yet disclosed which would adversely affect the
future operations of the Constituent Corporations, taken as a whole.

ARTICLE 4 REPRESENTATIONS AND WARRANTIES OF PROMEDCO AND
MERGERSUB

         ProMedCo and MergerSub hereby represent and warrant as follows:

         4.1 Organization  and Standing of ProMedCo and MergerSub.  ProMedCo and
MergerSub are corporations duly organized, validly existing and in good standing
under the laws of the  states of  Delaware  and  Maine  respectively;  have full
corporate  power  and  authority  to  conduct  their  businesses  as  now  being
conducted;  and are duly qualified to do business in each  jurisdiction in which
the  nature of the  property  owned or leased  or the  nature of the  businesses
conducted  by them  requires  such  qualification.  Copies  of the  Articles  of
Incorporation  and Bylaws of MergerSub as they shall exist  immediately prior to
the Closing are attached hereto as Appendix 4.1.

         4.2 Prospectus; Financial Statements.

(a)  Prospectus.  ProMedCo has delivered to the Constituent  Corporations a copy
     of its  Prospectus  dated March 12, 1997 as filed with the  Securities  and
     Exchange  Commission  ("SEC") and complete and correct  copies of all other
     reports and other  filings  filed by ProMedCo  with the SEC pursuant to the
     Securities  Exchange Act of 1934, as amended (the  "Exchange  Act"),  since
     January 1, 1994,  through the date hereof (such  reports and other  filings
     are  collectively   referred  to  herein  as  the  "ProMedCo  Exchange  Act
     Filings").  As of their respective dates, the ProMedCo Exchange Act Filings
     complied in all material  respects with the published rules and regulations
     of the SEC with respect thereto and did not contain any untrue statement of
     a material fact or omit to state a material fact required to be

27






<PAGE>


                                                      -28-

stated therein or  necessary  to make the  statements  therein,  in light of the
     circumstances  under which they were made, not misleading.  The description
     of  ProMedCo,  its  business and other  salient  features  contained in the
     Prospectus as modified by the ProMedCo  Exchange Act Filings are correct in
     all  material  respects  and  may be  relied  upon  by a  prudent  investor
     contemplating an investment in ProMedCo Stock.

(b)  ProMedCo Financial  Statements.  The Prospectus  contains the consoli dated
     balance sheet of ProMedCo and its subsidiaries at December 31, 1996, and at
     December 31, 1995,  and the related  consolidated  statement of operations,
     stockholders' equity and cash flows for the years then ended, together with
     the  opinion  thereon of Arthur  Andersen  & Co.,  LLP,  certi fied  public
     accountants. The financial statements included in the ProMedCo Exchange Act
     Filings  have been based upon the  information  contained  in the books and
     records of ProMedCo and present fairly the financial  condition of ProMedCo
     and its  subsidiaries as at the respective dates thereof and the results of
     their operations for the periods ended at the respective dates thereof,  in
     each case  prepared  in  conformity  with  gener ally  accepted  accounting
     principles  applied on a consistent  basis through out the periods involved
     and with prior  periods,  except as stated in the unaudited  portion of the
     financial statements.

         4.3 Absence of Certain Changes. Since March 3, 1997, there has not been
any change in the assets, liabilities or financial condition of ProMedCo and its
subsidiaries  other  than  changes  which,  in  the  aggregate,  have  not  been
materially adverse;  any material adverse change in the business of ProMedCo and
its subsidiaries;  or any damage,  destruction,  casualty or loss materially and
adversely affecting the business or property of ProMedCo and its subsidiaries.

         4.4 Authority; Binding Effect. The execution,  delivery and performance
of  this  Agreement  and  all  other   agreements,   instruments  and  documents
contemplated hereby and the consummation of the transactions contemplated hereby
have been duly  authorized  by all  necessary  corporate  action of ProMedCo and
MergerSub,  and no other  proceedings  or  actions on the part of  ProMedCo  and
MergerSub are necessary to authorize this Agreement and the  consummation of the
transactions  contemplated  hereby.  This  Agreement  has been duly executed and
delivered by ProMedCo and MergerSub.  This Agreement  constitutes  the valid and
binding  agreement of ProMedCo and MergerSub  enforceable in accordance with its
terms  (except as the same may be  restricted,  limited or delayed by applicable
bankruptcy or other laws affecting  creditors' rights generally and except as to
the remedy of specific  performance which may not be available under the laws of
various  jurisdictions)  assuming that this Agreement has been duly  authorized,
delivered and executed by the Constituent Corporations and constitutes the valid
and binding  obligations,  enforceable  against the Constituent  Corporations in
accordance with its




<PAGE>


                                                      -29-

terms (except as  enforceability  against the  Constituent  Corporations  may be
restricted,  limited  or  delayed  to the  same  extent  as  referred  to in the
parenthetical phrase immediately above).

         4.5 No Finders or  Brokers.  Neither  ProMedCo  nor  MergerSub  nor any
officer or director  thereof has engaged any finder or broker in connection with
the transactions contem plated hereunder.

         4.6  Defaults.  Neither  ProMedCo  nor  any of its  subsidiaries  is in
default  under,  nor has any  event  occurred  which,  with the lapse of time or
action  by a  third  party,  would  result  in a  material  default  under,  any
outstanding  indenture,  mortgage,  contract,  instrument  or agreement to which
ProMedCo or any of its subsidiaries is bound. The execution, delivery and perfor
mance of this  Agreement  by ProMedCo  and the  consummation  by ProMedCo of the
transactions  contemplated  by this Agreement  will not (i) violate,  subject to
compliance  with the  applicable  requirements  of the Maine  Insurance  Holding
Company Act,  federal and state  securities laws, or result in the breach of, or
constitute  a default  under,  any law the  violation of which would result in a
significant  liability to ProMedCo,  or, to the best knowledge of ProMedCo,  any
order,  writ,  injunction  or  decree  of  any  court,  governmental  agency  or
arbitration  tribunal;  (ii)  constitute  a material  violation of or a material
default  under,  or a  material  conflict  with,  any term or  provision  of the
Articles of  Incorporation  or by-laws of ProMedCo or any of its subsidiaries or
any  material  contract,  commitment,  indenture,  lease,  instrument  or  other
agreement to which ProMedCo or any of its  subsidiaries  is a party or is bound;
or (iii) cause,  or, to the best knowl edge of ProMedCo,  give any party grounds
to cause (with or without  notice,  the passage of time or both) the maturity of
any  liability  or  obligation  of  ProMedCo  or any of its  subsidiaries  to be
accelerated or increase any such liability or obligation.

         4.7 Pending  Litigation.  There are no  proceedings  pending or, to the
knowledge of ProMedCo,  threatened,  against or affecting ProMedCo or any of its
subsidiaries  in any court or before any  governmental  authority or arbitration
board or tribunal  which involve the  possibility  of  materially  and adversely
affecting the properties,  business,  prospects, profits or condition (financial
or otherwise) of ProMedCo or any of its subsidiaries considered as a whole.

         4.8 Court Orders,  Decrees and Laws.  There is not  outstanding  or, to
ProMedCo's  knowledge,  threatened any order, writ,  injunction or decree of any
court, governmental agency or arbitration tribunal against or affecting ProMedCo
or any of its  subsidiaries  or any of their  assets  which would  significantly
interfere  with  their  ability  to  conduct  their  businesses.  To  ProMedCo's
knowledge,  ProMedCo and its  subsidiaries are in compliance with all applicable
federal,  state and local laws,  regulations and administrative orders which are
material  the  business  of  ProMedCo  and  its  subsidiaries.  No  governmental
authorities are presently  conduct ing any  investigation or proceeding  against
ProMedCo  or any of its  subsidiaries  and,  to  ProMedCo's  knowledge,  no such
investigation or proceeding is pending or being threatened.


29






<PAGE>


                                                      -30-

         4.9 Consents and  Approvals of  Governmental  Authorities.  No consent,
approval or authorization  of, or declaration,  filing or registration  with any
governmental  or  regulatory  authority  is  required  in  connection  with  the
execution  and  delivery  of  this  Agreement  and  the   consummation   of  the
transactions  contemplated hereby except for filing and recording of appropriate
merger documents and issuance of a Certificate of Mergers as required by the law
of the  State of  Maine,  obtaining  all  approvals  required  under  the  Maine
Insurance  Holding  Company  Act and  compliance  with  all  federal  and  state
securities filing requirements.

         4.10 Interim Operations of Merger Sub. Merger Sub was formed solely for
the purpose of engaging in the transactions  contemplated hereby, has engaged in
no  other  business   activities  and  has  conducted  its  operations  only  as
contemplated  hereby.  As of the date hereof and the Effective Date,  except for
obligations  or liabilities  incurred in connection  with its  incorporation  or
organization and the transactions contemplated by this Agreement, Merger Sub has
not and will not have incurred,  directly or indirectly  through any subsidiary,
any obligations or liabilities or engaged in any business activities of any type
or kind  whatsoever  or entered into any  agreements  or  arrangements  with any
Person.

         4.11 Disclosure. No representation or warranty by ProMedCo or MergerSub
in  this  Agreement  and no  statement  in this  Agreement  or any  document  or
certificate  furnished  or to  be  furnished  to  the  Constituent  Corporations
pursuant hereto contains or will contain any untrue statement of a material fact
or omits or will omit to state a material  fact  necessary  in order to make the
statements contained therein not misleading.

ARTICLE  5 COVENANTS OF PROMEDCO

         ProMedCo hereby covenants and agrees as follows:

         5.1 The Subsidiary.  Prior to the Closing Date,  ProMedCo shall provide
Subsidiary  with a  sufficient  number of shares of  ProMedCo  Common  Stock for
distribution to the  shareholders of the Constituent  Corporations in accordance
with this Agreement.

         5.2 Best Efforts to Secure  Consents.  ProMedCo will cooperate with the
Constituent  Corporations  and shall use its best  efforts to secure  before the
Closing  all  necessary  consents  and  approvals  needed  to  satisfy  all  the
conditions  precedent  to  the  obligations  of  the  Constituent   Corporations
hereunder and to consummate  the  transactions  contemplated  hereby,  including
securing the required approval of the Maine Bureau of Insurance.

         5.3  Information.  ProMedCo shall promptly  provide to the  Constituent
Corporations  upon reasonable  request any  information or documents  reasonably
necessary for the  Constituent  Corporations  or their  stockholders  to make an
informed  judgment  as to the  advisability  of  consummating  the  transactions
contemplated hereby or to verify the representations and warranties of MergerSub
herein. Until the Closing Date ProMedCo shall notify the Constituent




<PAGE>


                                                      -31-

Corporations of any matter which may be materially adverse to ProMedCo and shall
keep the Constituent Corporations fully informed of such events.

         5.4 Corporate  Action.  ProMedCo and MergerSub  will take all necessary
corporate  and other  action and use its best  efforts  to obtain all  consents,
approvals  and  amendments  of  agreements  required  of them to  carry  out the
transactions  contemplated  by this  Agreement  and to  satisfy  the  conditions
specified  herein.  Neither  ProMedCo  nor the  MergerSub  shall take any action
intended to make any of the representations and warranties  contained in Article
4 of this  Agreement  untrue or incorrect at and as of the Effective Date unless
such action is contemplated by this Agreement.

         5.5 Handling of Documents.  With respect to information provided by the
Constituent  Corporations  pursuant  to this  Agreement  prior  to the  Closing,
ProMedCo and MergerSub shall keep all such information confidential which is not
in the public  domain,  except to the extent that such  information  (i) becomes
generally  available  to the  public  other  than as a  result  of a  disclosure
directly or indirectly by ProMedCo, (ii) was known by ProMedCo on a non-confiden
tial basis  prior to  disclosure  to ProMedCo  by the  Constituent  Corporations
pursuant  to  this  Agreement  or  (iii)  becomes  available  to  ProMedCo  on a
non-confidential  basis  from a  source  (other  than  one  of  the  Constituent
Corporations)  which is entitled to disclose the same,  and to exercise the same
care  in  handling  such   information  as  they  would  exercise  with  similar
information of their own.

         5.6 Non-Disclosure. ProMedCo will keep confidential and not disclose to
any third  party any  information  relating to the  business of the  Constituent
Corporations,  whether  acquired by ProMedCo  before or after the Closing  Date,
which ProMedCo has not made generally available to the public.

         5.7 Tax  Representation  Letter.  ProMedCo  is  prepared  to, and will,
deliver  at  Closing  a tax  representation  letter  in  substantially  the form
attached hereto as Appendix5.7.

ARTICLE  6 COVENANTS OF THE CONSTITUENT CORPORATIONS

         The Constituent  Corporations hereby jointly and severally covenant and
agree as follows:

         6.1 Access and Information.  Between the date of this Agreement and the
Effective Date; the Constituent  Corporations  will: (i) provide to the ProMedCo
and its  officers,  attorneys,  accountants  and other  representatives,  during
normal business hours, or otherwise if ProMedCo deems  necessary,  free and full
access  to  all of  the  properties,  assets,  agreements,  commitments,  books,
records,  accounts,  tax returns, and documents of the Constituent  Corporations
and permit them to make  copies  thereof;  (ii)  furnish  the  ProMedCo  and its
representatives  with all informa tion  concerning the business,  properties and
affairs of the Constituent Corporations as

31






<PAGE>


                                                      -32-

ProMedCo requests and certified by the officers,  if requested;  (iii) cause the
independent public accountants of the Constituent Corporations to make available
to ProMedCo and its representa tives all financial  information  relating to the
Constituent  Corporations requested,  including all working papers pertaining to
audits and reviews made heretofore by such auditors;  (iv) furnish ProMedCo true
and complete copies of all financial and operating statements of the Constituent
Corporations;  (v) permit access to customers and suppliers for  consultation or
verification of any information  obtained by ProMedCo and use their best efforts
to cause such  customers  and  suppliers to cooperate  with the ProMedCo in such
consultation and in verifying such informa tion; and (vi) cause their employees,
accountants and attorneys to make disclosure of all material facts known to them
affecting the financial  condition  and business  operations of the  Constituent
Corporations  and to cooperate fully with any audit,  review,  investigation  or
examination  made  by  ProMedCo  and  its  representatives,  including,  without
limitation, with respect to:

         (a)      The books and records of each Constituent Corporation;

         (b)      The reports of state and federal regulatory examinations;

         (c)      Leases,  contracts and commitments  between either Constituent
                  Corporation and any other person; and

         (d)      Physical examination of the Equipment and Furnishings.

         6.2 Conduct of  Business.  Between  the date  hereof and the  Effective
Date,  except as  otherwise  expressly  approved  in writing by  ProMedCo,  each
Constituent Corporation shall conduct its businesses only in the ordinary course
thereof  consistent with past practice and shall take no action intended to make
any the representations and warranties  contained in Article 3 of this Agreement
untrue or incorrect at and as of the Effective Date unless such action is contem
plated  by  this  Agreement.   The  Constituent   Corporations  will  use  their
commercially  reasonable efforts to, consistent with conducting their businesses
in accordance with reasonable  business judgment,  preserve the their businesses
intact;  and use their  commercially  reasonable  efforts to keep  available  to
ProMedCo and MergerSub the services of the present  employees of the Constituent
Corporations  (except  those  dismissed  for  cause  or  those  who  voluntarily
discontinue  their  employment)  and preserve for  ProMedCo  and  MergerSub  the
goodwill of the suppliers,  patients and others having  business  relations with
the Constituent Corporations.

         6.3 Compliance with Agreement.  The Constituent  Corporations shall not
undertake any course of action  inconsistent with satisfaction of the conditions
applicable  to it set  forth in this  Agreement,  and shall do all such acts and
take all  such  measures  as may be  reasonably  necessary  to  comply  with the
representations,  agreements, conditions and other provisions of this Agreement.
The  Constituent  Corporations  shall give ProMedCo prompt written notice of any
change in any information  contained in the  representations and warranties made
in Article 3 hereof and on the Exhibits referred to therein (provided,  however,
that such notice shall not limit




<PAGE>


                                                      -33-

ProMedCo's  rights  under ss. 8.1  hereof) and of any  condition  or event which
constitutes  a default of any covenant or agreement  made in Article 6 or in any
other section hereof.

         6.4 Best Efforts to Secure Consents. The Constituent  Corporations will
cooperate  with  ProMedCo  and shall use its best  efforts to secure  before the
Closing  Date all  necessary  consents and  approvals  needed to satisfy all the
conditions  precedent  to the  obligations  of  ProMedCo  and  MergerSub  and to
consummate the transactions contemplated hereby, including securing the required
approval of the Maine Bureau of Insurance.

         6.5  Unusual   Events.   Until  the  Effective  Date,  the  Constituent
Corporations  shall  supplement  or amend all  relevant  Exhibits in the Exhibit
Volume with respect to any matter  thereafter  arising or discovered  which,  if
existing or known at the date of this Agreement,  would have been required to be
set  forth  or  described  in such  Exhibits;  provided,  however,  that for the
purposes  of the rights  and  obligations  of the  parties  hereunder,  any such
supplemental  disclosure  shall not be deemed to have been  disclosed  as of the
date Constituent  Corporations  delivers to ProMedCo the Exhibit Volume pursuant
to ss. 9.1 of this Agreement, and shall not be deemed to amend or supplement any
Exhibits  or to prevent or cure any  misrepresentation,  breach of  warranty  or
breach of covenant  made as of the date of this  Agreement,  unless agreed to in
writing  by  ProMedCo;   provided  further,   however,  that  such  supplemental
disclosure  shall cure any such  misrepresentation  or breach if,  despite  such
supplemental  disclosure,  ProMedCo  consummates the Closing  (whether or not it
expressly waives such misrepresentation or breach).

         6.6 Interim Financial Statements.  Within 30 days after the end of each
calendar  month  subsequent  to the  date of this  Agreement  and  prior  to the
Effective Date, the Constituent Corporations shall deliver to ProMedCo unaudited
balance sheets of each  Constituent  Corpora tion as at the end of such calendar
month  together with the related  statement of  operations.  All such  financial
statements  shall fairly present the financial  position,  results of operations
and changes in financial  condition during the periods indicated,  in accordance
with generally accepted accounting principles  consistently applied, except that
note information may be omitted in such  statements,  subject to normal year-end
audit adjustments,  but only if such adjustments are of a normal, recurring type
and are not material in the aggregate.

         6.7  Stockholders'  Meeting.  Promptly  after  the  date  hereof,  each
Constituent Corpora tion shall call a meeting of its stockholders (to be held as
soon as practicable after said ProMedCo approval) for the purpose of considering
and acting upon the Merger relating to it, to recommend  approval of such Merger
to  its  stockholders,  and  use  its  best  efforts  to  obtain  the  necessary
stockholder approval.

         6.8 Departmental Violations.  All notes or notices of violations of law
or  municipal  ordinances,  orders  or  requirements  noted in or  issued by the
Departments of Buildings,  Fire, Labor,  Health, or any other State or Municipal
Department having jurisdiction against or

33






<PAGE>


                                                      -34-

affecting the  business,  property or assets of either  Constituent  Corporation
shall be  complied  with prior to the Closing  Date.  All such notes or notices,
after the date hereof and prior to the Closing  Date,  shall be complied with by
the Constituent  Corporations  prior to the Closing Date. Upon written  request,
the  Constituent  Corporations  shall  furnish  ProMedCo and  MergerSub  with an
authorization to make the necessary searches for such notes or notices.

         6.9 Insurance  Ratings.  Each  Constituent  Corporation  shall take all
action reasonably  requested by ProMedCo to enable it to succeed to the Workers'
Compensation and Unemploy ment Insurance ratings,  insurance policies,  deposits
and other  interests  of such  Constituent  Corporation  and other  ratings  for
insurance  or  other  purposes  established  by  such  Constituent  Corporation.
ProMedCo shall not be obligated to succeed to any such rating, insurance policy,
deposit or other interest, except as it may elect to do so.

         6.10  Maintain  Insurance  Coverage.  From the date  hereof  until  the
Closing, the Constituent  Corporations shall maintain and cause to be maintained
in full force and effect the existing insurance on the Assets and the operations
of the  Constituent  Corporations  and shall provide,  upon request by ProMedCo,
evidence  satisfactory to ProMedCo that such insurance continues to be in effect
and that all premiums due have been paid.

         6.11  Exclusive  Dealings.  During  the  period  from  the date of this
Agreement  to the  Closing  Date,  or  until  the  earlier  termination  of this
Agreement pursuant to Article 9, each Constituent Corporation shall refrain from
taking any actions,  directly or indirectly,  to encour age, initiate, or engage
in  discussions  or  negotiations  with,  or  provide  any  information  to, any
corporation,  partnership, person, or other entity or group, other than ProMedCo
and MergerSub,  concerning the purchase of such  Constituent  Corporation or its
assets,  or any merger,  joint  venture or similar  transaction  involving  such
Constituent Corporation and will not enter into any such transaction.

         6.12   Non-Disclosure.   Each   Constituent   Corporation   will   keep
confidential and not disclose to any third party any information relating to the
business of ProMedCo, whether acquired by such Constituent Corporation before or
after the Closing Date,  which ProMedCo has not made generally  available to the
public.

         6.13 HP Stock  Options.  Prior to the  Closing HP shall  eliminate  all
outstanding stock options which elimination may be effected by exercise thereof.

         6.14  Tax  Representation  Letter.  Each  Constituent   Corporation  is
prepared to, and will, deliver a tax representation  letter in substantially the
form attached as Appendix 6.14.

         6.15  Modification  of ERISA  Plans.  If  after  ProMedCo  reviews  the
materials  constitut ing Exhibits  3.25 and 3.26 it  determines  that any of the
employee  benefit plans of the  Constituent  Corporations  are not in compliance
with ERISA or could result in liabilities to ProMedCo after




<PAGE>


                                                      -35-

the Effective  Date which are not in the ordinary  course of its  business,  the
Constituent  Corpora  tions will use their  best  efforts to bring such plans in
compliance with ERISA or to terminate them prior to the Closing.

ARTICLE  7 CONDITIONS PRECEDENT TO THE OBLIGATIONS OF THE
CONSTITUENT CORPORATIONS

         All  obligations  of  the  Constituent  Corporations  which  are  to be
discharged  under this Agreement at the Closing are subject to the  performance,
at or prior to the Closing,  of all covenants and  agreements  contained  herein
which are to be performed  by ProMedCo and  MergerSub at or prior to the Closing
and to the  fulfillment  at, or prior to, the Closing,  of each of the following
conditions  (unless expressly waived in writing by the Constituent  Corporations
at any time at or prior to the Closing):

         7.1 Representations and Warranties True. All of the representations and
warranties  made by  ProMedCo  and  MergerSub  contained  in  Article  4 of this
Agreement  shall have been true in all material  respects as of the date of this
Agreement,  and ProMedCo and MergerSub  shall have performed and complied in all
material  respects with all covenants and conditions  required by this Agreement
to be  performed or complied  with by them prior to or at the  Closing;  and the
Constituent  Corporations  shall have been  furnished  with a certificate of the
President or any Vice  President of ProMedCo  and  MergerSub,  dated the Closing
Date,   in  such   officer's   capacity,   certifying   to  the  truth  of  such
representations  and warranties as of the date hereof and to the  fulfillment of
such covenants and conditions.

         7.2 Opinion of Counsel.  The Constituent  Corporations  shall have been
furnished with an opinion dated the Closing Date of Boult,  Cummings,  Conners &
Berry,  PLC,  counsel to ProMedCo,  in form and  substance  satisfactory  to the
Constituent Corporations,  in substantially the form attached hereto as Appendix
7.2.

         7.3  Authority.  All action  required  to be taken by or on the part of
ProMedCo and MergerSub to authorize the execution,  delivery and  performance of
this Agreement by ProMedCo and MergerSub and the Articles of Merger by MergerSub
including any required federal or state securities  filings and the consummation
of the transactions  contemplated  hereby shall have been duly and validly taken
by the Board of Directors of ProMedCo and MergerSub.

         7.4 No Obstructive Proceeding. No action or proceedings shall have been
instituted by a governmental  agency,  commission or authority  against,  and no
order,  decree or  judgment of any court,  agency,  commission  or  governmental
authority shall be subsisting against,  either Constituent  Corporation,  or the
officers or  directors  of either  Constituent  Corporation,  which seeks to, or
would,  render  it  unlawful  as of  the  Closing  to  effect  the  transactions
contemplated  hereby in  accordance  with the terms  hereof,  and no such action
shall seek damages in a material

35






<PAGE>


                                                      -36-

amount by reason of the transactions  contemplated  hereby. Also, no substantive
legal  objection to the  transactions  contemplated by this Agreement shall have
been received from or threatened by any governmental department or agency.

         7.5  Delivery of Certain  Documents.  At the  Closing,  ProMedCo  shall
deliver to the Constituent  Corporations copies of the Articles of Incorporation
of ProMedCo and MergerSub  certified (not more than 30 days prior to the Closing
Date) by the appropriate  governmental  authorities and copies of resolutions of
the Boards of Directors of ProMedCo and MergerSub and the consent of ProMedCo as
the sole  stockholder  of  MergerSub,  certified  by the  secretary or assistant
secretary of ProMedCo and MergerSub  approving and authorizing the execution and
delivery of this Agreement and the consummation of the transactions contemplated
hereby. In addition ProMedCo and MergerSub shall deliver an executed copy of the
tax  representation   letter  in  substantially  the  form  attached  hereto  as
Appendix5.7.

         7.6  Approval by  Stockholders  of the  Constituent  Corporations.  The
stockholders  of each  Constituent  Corporation  shall have  approved the Merger
pertaining to it in accordance with the Maine Business Corporation Act.

         7.7 Articles of Merger.  Merger Sub shall have executed the Articles of
Merger  (and any other  documents  required to be filed in  connection  with the
mergers of the  Constituent  Corporations  and Merger  Sub) and the  Articles of
Merger  shall have been filed with the Maine  Secretary  of State in  accordance
with the Maine Business Corporation Act.

         7.8 Maine Bureau of Insurance. The Maine Bureau of Insurance shall have
granted all approvals  required under the Maine Insurance Holding Company Act to
be obtained by ProMedCo in connection with the transactions contemplated hereby.

ARTICLE  8 CONDITIONS PRECEDENT TO THE OBLIGATIONS OF PROMEDCO
AND MERGERSUB

         All  obligations  of ProMedCo and MergerSub  which are to be discharged
under this Agreement at the Closing are subject to the performance,  at or prior
to the Closing, of all covenants and agreements contained herein which are to be
performed by the Constituent  Corporations at or prior to the Closing and to the
fulfillment  at or  prior to the  Closing  of each of the  following  conditions
(unless  expressly waived in writing by ProMedCo and MergerSub at any time at or
prior to the Closing):

         8.1 Representations and Warranties True. All of the representations and
warranties  of the  Constituent  Corporations  contained  in  Article  3 of this
Agreement  shall  have  been  true  as of the  date of  this  Agreement  and the
Constituent  Corporations  shall have  performed  or  complied  in all  material
respects  with all  covenants and  conditions  required by this  Agreement to be
performed  or  complied  with by it prior  to or at the  Closing.  ProMedCo  and
MergerSub shall be




<PAGE>


                                                      -37-

furnished  with a  certificate  of the  President or any Vice  President of each
Constituent  Corpora tion,  dated the Closing  Date, in such person's  corporate
capacity,  certifying to the truth of such  representations and warranties as of
the date hereof and to the fulfillment of such covenants and conditions.

         8.2 No Obstructive Proceeding. No action or proceedings shall have been
instituted by a governmental  agency,  commission or authority  against,  and no
order,  decree or  judgment of any court,  agency,  commission  or  governmental
authority shall be subsisting  against,  ProMedCo,  MergerSub or the officers or
directors of ProMedCo or MergerSub which seeks to, or would,  render it unlawful
as of the Closing to effect the transactions  contemplated  hereby in accordance
with the terms  hereof,  and no such  action  shall  seek  damages in a material
amount by reason of the transaction  contemplated  hereby.  Also, no substantive
legal  objection to the  transactions  contemplated by this Agreement shall have
been received from or threatened by any govern mental department or agency.

         8.3 Opinion of Counsel to the Constituent Corporations. The Constituent
Corpora  tions shall have  delivered to ProMedCo and MergerSub at the Closing an
opinion of Ropes & Gray,  counsel  to the  Constituent  Corporations,  dated the
Closing Date, in substantially the form attached hereto as Appendix 8.3.

         8.4 Consents  and  Approvals.  Each of the parties to any  agreement or
instrument to which either of the Constituent Corporation is a party or by which
it is bound under which the transactions contemplated hereby would constitute or
result in a default or acceleration of obligations shall have given such consent
as may be necessary to permit the consummation of the transactions  contemplated
hereby without constituting or resulting in a default or acceleration under such
agreement or instrument, and any consents required from any public or regulatory
agency or organization having jurisdiction shall have been given.

         8.5 No  Adverse  Change.  From the  date of this  Agreement  until  the
Closing,  the  operations  of  the  Constituent  Corporations  shall  have  been
conducted in the ordinary  course of business  consistent with past practice and
from the date of the  Constituent  Corporation  Financial  Statements  until the
Closing no event shall have occurred or have been threatened  which has or would
have a  material  and  adverse  affect  upon the  financial  condition,  assets,
liabilities,  operations, prospects or business of the Constituent Corporations,
taken as a whole; and the Constituent  Corporations shall have not sustained any
loss or damage to their assets,  whether or not insured,  or union activity that
affects  materially  and adversely  their  ability to conduct their  businesses,
taken as a whole.

         8.6 Stockholder Agreements.  All of the Shareholders of the Constituent
Corporations  shall have executed and  delivered a stockholder  agreement in the
form attached hereto as Appendix 8.6 (the "Stockholder Agreements").

37






<PAGE>


                                                      -38-

         8.7 Shareholder  Representations.  Each of the Shareholders  shall have
executed and delivered a Continuity of Interest Certificate in the form attached
hereto as Appendix 8.7.

         8.8  Approval by  Stockholders  of the  Constituent  Corporations.  The
stockholders  of each  Constituent  Corporation  shall have  approved the Merger
pertaining to it in accordance with the Maine Business Corporation Act.

         8.9 Maine Bureau of Insurance. The Maine Bureau of Insurance shall have
granted all approvals  required under the Maine Insurance Holding Company Act to
be obtained by ProMedCo in connection with the transactions contemplated hereby.

         8.10 Delivery of Certain  Documents.  At the Closing,  the  Constituent
Corporations  shall  have  delivered  to  ProMedCo  copies  of the  Articles  of
Incorporation of each Constituent  Corporation  certified (not more than 30 days
prior to the  Closing  Date) by the  appropriate  governmental  authorities  and
copies of resolutions of the stockholders of each Constituent Corporation and of
the  Board  of  Directors  of each  Constituent  Corporation,  certified  by the
secretary  of  such  Constituent  Corporation,  approving  and  authorizing  the
execution  and  delivery  of  this  Agreement  and  the   consummation   of  the
transactions contemplated hereby. In addition the Constituent Corporations shall
have delivered copies of the tax representation letter in substantially the form
attached as Appendix 6.14.

         8.11  Employment  Agreements.  HP  shall  have  delivered  to  ProMedCo
Employment Agreements, in the forms attached hereto as Appendix 8.11A through C,
executed by each of the persons listed in ss. 2.9.

         8.12  Articles  of  Merger.  Each  Constituent  Corporation  shall have
executed the Articles of Merger (and any other documents required to be filed in
connection with the merger of such  Constituent  Corporation and Merger Sub) and
the Articles of Merger  shall have been filed with the Maine  Secretary of State
in accordance with the Maine Business Corporation Act.

ARTICLE  9  TERMINATION

         9.1 Optional  Termination.  This  Agreement may be  terminated  and the
transactions  contemplated  hereby  abandoned at any time prior to the Effective
Date, notwithstanding stock holder approval as follows:

         (a)      By the mutual consent of ProMedCo and the Constituent 
                  Corporations; or

         (b)      By the Constituent Corporations,  if any of the conditions set
                  forth in  Article 7 shall not have met or waived by  September
                  17, 1997;  provided that the Constitu ent  Corporations  shall
                  not be entitled to terminate this Agreement pursuant to this




<PAGE>


                                                      -39-

                  ss. 9.1(b) if breach of this Agreement by either Constituent 
                  Corporations has prevented the consummation of the 
                  transactions contemplated hereby; or

         (c)      By ProMedCo,  if any of the  conditions  provided in Article 8
                  hereof  have not been met or waived  by  September  17,  1997;
                  provided  that  ProMedCo  shall not be enti tled to  terminate
                  this  Agreement  pursuant  to this ss.  9.1(c)  if  ProMedCo's
                  breach of this Agreement has prevented the consummation of the
                  transactions contemplated hereby.

Notwithstanding   anything  to  the  contrary  set  forth  herein,  the  parties
acknowledge and agree that the Exhibits referred to in Article 3 herein were not
prepared or  delivered to ProMedCo or  MergerSub  prior to or  contemporaneously
with  the  execution  of this  Agreement.  By July  31,  1997,  the  Constituent
Corporations  shall deliver to ProMedCo and MergerSub all the Exhibits  referred
to in Article 3, to be prepared in accordance  with Article 3 of this Agreement,
and ProMedCo may, at its discretion, within seven days after its receipt of such
Exhibits,  terminate this Agreement by notice to the Constituent Corporations if
any information contained in any of such Exhibits or any information obtained by
ProMedCo pursuant to ss. 6.3 of this Agreement by such date shall establish that
any  representation  or warranty of the Constituent  Corporations  con tained in
Article 3 of this Agreement or any information  previously furnished to ProMedCo
or  MergerSub  by  the  Constituent   Corporations  concerning  the  Constituent
Corporations  shall not be true and accurate in all material  respects as of the
date of this Agreement or in the opinion of ProMedCo, any of such Exhibits shall
disclose  facts which  shall be  materially  adverse  con cerning the  financial
condition, business or operations of Constituent Corporations, taken as a whole,
as of the date of this Agreement or as of the date of such disclosure.

         9.2 Notice of Abandonment.  In the event of such  termination by either
ProMedCo or the  Constituent  Corporations  pursuant  to ss. 9.1 above,  written
notice shall forthwith be given to the other party hereto.

         9.3 Mandatory Termination. If the Closing has not occurred by September
30, 1997, this Agreement shall  automatically  terminate and no longer be of any
force or effect.

         9.4 Termination.  In the event this Agreement is terminated as provided
above, ProMedCo and MergerSub shall deliver to the Constituent  Corporations all
documents (and copies  thereof in its  possession)  concerning  the  Constituent
Corporations  and  its  subsidiaries  previously  delivered  by the  Constituent
Corporations  to ProMedCo and MergerSub;  and,  except as expressly  provided in
Section IV of the Binding Letter of Intent by and between  ProMedCo and HP dated
as of June 9, 1997,  none of the parties nor any of their  respective  partners,
shareholders, directors, or officers shall have any liability to the other party
for costs,  expenses,  loss of anticipated  profits,  consequential  damages, or
otherwise,  except for any  deliberate  breach of any of the  provisions of this
Agreement.

39





<PAGE>


                                                      -40-

         9.5  Shareholder Representative.

         (a)      Appointment.  By their execution of the Joinder at the foot of
                  this   Agreement,   the   Shareholders   of  the   Constituent
                  Corporations irrevocably constitute and appoint Johan Brouwer,
                  M.D.,   and   Robert   Sontheimer   to  as  the   agents   and
                  attorneys-in-fact   of  the  Shareholders   (collectively  the
                  "Shareholder's  Representa  tive") to act for and on behalf of
                  each of the  Shareholders  with respect to all matters arising
                  in connection with this  Agreement,  including but not limited
                  to,   the   power   and   authority,   in  the   Shareholder's
                  Representative's sole discretion, to:

                        (i)         take any action contemplated to be taken by,
                                    and receive any notices  contemplated  to be
                                    given to, the Shareholder's  Representa tive
                                    under this Agreement;

                       (ii)         negotiate,  determine, defend and settle any
                                    dispute   which  my  arise  this   Agreement
                                    between the Shareholder's Representative and
                                    the  other  parties  thereto  and to  accept
                                    service of process in connection  therewith;
                                    and

                      (iii)         make,  execute,  acknowledge and deliver any
                                    release,   assurance,    receipt,   request,
                                    instruction,  notice, agreement, certificate
                                    or other instrument, and to generally do any
                                    and  all  things  and to  take  any  and all
                                    actions  which my be  requisite,  proper  or
                                    advisable in connection with this Agreement.

         (b)      Indemnification   of   Shareholder's   Representative.    Each
                  Shareholder   shall  indemnify  and  hold  the   Shareholder's
                  Representative  harmless  with respect to anything done by the
                  Shareholder's  Representative in good faith in connection with
                  their   responsibilities   hereunder   and  to  reimburse  the
                  Shareholder's   Represen   tative,   in  proportion  to  their
                  respective interests in the Balance of the ProMedCo Shares for
                  any costs or expenses,  including attorneys' fees, incurred by
                  the Shareholder's  Representative in the satisfaction of their
                  responsibilities hereunder.


         (c)      Selection of Successor.  If the Shareholder  Representative or
                  any successor  Shareholder  Representative  shall die,  become
                  disabled,  or  otherwise  be  unable to  continue  to act as a
                  Shareholder  Representative  hereunder,  the  Shareholders who
                  formerly  received  a  majority  of HP and HSI  Consideration,
                  within fifteen (15) days of such  occurrence,  shall appoint a
                  successor Shareholder Representative and shall promptly notify
                  the other  parties  hereto in writing of the  identify of such
                  successor.





<PAGE>


                                                      -41-

ARTICLE 10 MISCELLANEOUS

         10.1 Expenses. All expenses of the preparation of this Agreement and of
the transac tions contemplated hereby,  including,  without limitation,  counsel
fees,  accounting fees,  investment  adviser's fees and disbursements,  shall be
borne by the  respective  parties  incurring  such expense,  whether or not such
transactions are consummated.

         10.2 HSR. Each party hereto acknowledges that it has received advice of
counsel that, based on the aggregate amount of the HP and HSI  Consideration and
the size of the parties as revealed in the Constituent  Financial Statements and
the ProMedCo  financial  statements  referred to herein, it is not necessary for
any  party  hereto  to  file  any  Hart-Scott-Rodino   Report  pursuant  to  the
Hart-Scott-Rodino  Antitrust  Improvements  Act  with  respect  to  the  mergers
contemplated hereby with the FTC or the Antitrust Division.

         10.3  Cooperation  by  ProMedCo.   In  the  event  either   Constituent
Corporation is required to defend against any action, suit or proceeding arising
out of a claim  pertaining  to the business or  operations  of such  Constituent
Corporation, ProMedCo shall provide such assistance and cooperation,  including,
without  limitation,   witnesses  and  documentary  or  other  evidence  as  may
reasonably be requested by such  Constituent  Corporation in connection with its
defense.

         10.4 Cooperation by Constituent Corporations.  In the event ProMedCo is
required to defend against any action, suit or proceeding arising out of a claim
pertaining  to a  liability  assumed  by  ProMedCo  pursuant  to this  Agreement
relating to the business or operations of either Constituent  Corporation,  such
Constituent Corporation shall provide such assistance and cooperation, including
without  limitation,  witnesses  and  documentary  or  other  evidence,  as  may
reasonably be requested by ProMedCo in connection with its defense.

         10.5 Notices. All notices,  demands and other communications  hereunder
shall be in writing and shall be deemed to have been duly given if  delivered in
person or mailed by certified mail or registered mail (postage prepaid), sent by
reputable overnight courier service (charges prepaid) or sent via facsimile:

         To the Constituent Corporations:  c/o Health Plans, Inc.
                                           Foreside Place
                                           202 US Route 1
                                           Falmouth, ME 04105
                                           (PO Box 9746
                                           Portland, ME 04104-5040)
                                           Attn:  Chief Executive Officer

         With a copy to:                   Ropes & Gray

41






<PAGE>


                                                      -42-

                                           One International Place
                                           Boston, MA  02110-2624
                                           Attn:  Michele M. Garvin

         To ProMedCo and MergerSub         c/o ProMedCo Management Company
                                           801 Cherry Street
                                           Suite 1450
                                           Fort Worth, TX 76102
                                           Attention: Chief Executive Officer

         with a copy to                    Boult, Cummings, Conners & Berry, PLC
                                           414 Union Street, Suite 1600
                                           Nashville, TN 38219
                                           Attention: John E. Gillmor

or to such other address as either the Constituent  Corporations or ProMedCo may
designate by notice to the other.

         10.6 Entire  Agreement.  This Agreement and the  Appendices,  Exhibits,
schedules and documents delivered pursuant hereto constitute the entire contract
between the parties hereto pertaining to the subject matter hereof and supersede
all prior  and  contemporaneous  agreements,  understandings,  negotiations  and
discussions,  whether  written  or  oral,  of  the  parties,  and  there  are no
representations,   warranties  or  other  agreements   between  the  parties  in
connection  with the subject matter  hereof,  except as  specifically  set forth
herein. No supplement, modification or waiver of this Agreement shall be binding
unless executed in writing by the parties to be bound thereby.

         10.7  Governing Law.  THE VALIDITY AND CONSTRUCTION OF THIS AGREE
MENT SHALL BE GOVERNED BY THE LAWS OF THE STATE OF MAINE.

         10.8 WAIVER OF TRIAL BY JURY.  TO THE EXTENT  PERMITTED  BY  APPLICABLE
LAW,  EACH PARTY  HEREBY  IRREVOCABLY  WAIVES  ALL RIGHT OF JURY IN ANY  ACTION,
PROCEEDING OR  COUNTERCLAIM  ARISING OUT OF OR IN CONNECTION WITH THIS AGREEMENT
OR ANY MATTER ARISING HEREUNDER.

         10.9 Legal Fees and Costs.  In the event  either  party elects to incur
legal  expenses to enforce or interpret  any  provision of this  Agreement,  the
prevailing  party will be entitled to recover  such legal  expenses,  including,
without   limitation,   reasonable   attorneys'   fees,   costs  and   necessary
disbursements,  in  addition  to any other  relief to which such party  shall be
entitled.

         10.10 Section Headings. The Section headings are for reference only and
shall not limit or control the meaning of any provision of this Agreement.




<PAGE>


                                                      -43-

         10.11  Waiver.  No delay or omission on the part of any party hereto in
exercising  any right  hereunder  shall operate as a waiver of such right or any
other right under this Agreement.

         10.12  Nature and Survival of Representations.

         (a) All  statements  contained  in any  certificate  delivered by or on
behalf of any of the parties to this  Agreement  pursuant  hereto in  connection
with the transactions  contemplated hereby shall be deemed to be representations
and warranties made by the respective parties hereunder.

         (b) Except as otherwise  provided in this Section 10.12, the covenants,
representations, warranties and agreements made by the parties each to the other
in this Agreement or pursuant hereto shall survive any investigation  made by or
on behalf of any other party hereto. All of the  representations  and warranties
included or provided for herein by the  Constituent  Corporations,  ProMedCo and
MergerSub  shall  survive for a period of one (1) year after the  Closing  Date;
provided,  however,  that the representations and warranties set forth in ss.ss.
3.2, 3.8, 3.21, 3.25 and 3.26 shall until  expiration of the relevant statute of
limitations, if longer.

         (c) Any disclosure  made with reference to one or more sections of this
Agreement or the Exhibit  Volume shall be deemed  disclosed  with respect to any
section  of this  Agreement  or the  Exhibit  Volume  to which  such  disclosure
reasonably relates.

         (d) For purposes of this Agreement,  "knowledge"  shall mean the actual
knowledge,  after reasonable inquiry, of the directors and officers of the party
to which it refers.

         10.13  Exhibits.  All  Exhibits,  Appendices,  schedules  and documents
referred  to in or at  tached  to this  Agreement  are  integral  parts  of this
Agreement  as if fully set forth  herein and all  statements  appearing  therein
shall be deemed to be representations.

         10.14  Assignment.  No party hereto shall assign this Agreement without
first obtaining the written consent of the other party.

         10.15 Binding on  Successors  and Assigns.  Subject to ss. 10.14,  this
Agreement  shall  inure  to  the  benefit  of and  bind  the  respective  heirs,
administrators,  successors and assigns of the parties hereto. Nothing expressed
or referred to in this  Agreement  is intended or shall be construed to give any
person other than the parties to this Agreement or their  respective  successors
or permitted  assigns any legal or equitable right,  remedy or claim under or in
respect  of this  Agreement  or any  provision  contained  herein,  it being the
intention of the parties to this Agreement that this Agreement  shall be for the
sole and exclusive  benefit of such parties or such  successors  and assigns and
not for the benefit of any other person.


43






<PAGE>


                                                      -44-

         10.16  Parties in  Interest.  Nothing in this  Agreement is intended to
confer any right on any person other than the parties to it and their respective
successors and assigns,  nor is anything in this Agreement intended to modify or
discharge  the  obligation or liability of any third person to any party to this
Agreement,  nor  shall  any  provision  give  any  third  person  any  right  of
subrogation or action over against any party to this Agreement.

         10.17 Amendments.  This Agreement may be amended,  but only in writing,
signed by the parties hereto, at any time prior to the Closing,  before or after
approval  hereof  by the  stockholders  of the  Constituent  Corporations,  with
respect  to any of the  terms  contained  herein,  but  after  such  stockholder
approval,  no amendment shall be made which reduces the consider ation per share
paid each such stockholder without the further approval of such stockholders.

         10.18  Drafting  Party.  The  provisions  of  this  Agreement,  and the
documents and instruments  referred to herein,  have been examined,  negotiated,
drafted and revised by counsel for each party hereto and no implication shall be
drawn nor made  against  any party  hereto  by  virtue of the  drafting  of this
Agreement.

         10.19  Counterparts.  This  Agreement  may be executed in any number of
counterparts,  each of which  shall be an  original,  but all of which  together
shall comprise one and the same instrument.

         10.20 Press Releases.  ProMedCo, MergerSub and Constituent Corporations
shall  cooperate  with  each  other in  releasing  information  concerning  this
Agreement and the transac tions contemplated hereby. Each of the parties to this
Agreement  shall  furnish  to  the  others  drafts  of  all  releases  prior  to
publication. Nothing contained in this Agreement shall prevent any party to this
Agreement at any time from furnishing any information to any  governmental  body
or agency.

         IN  WITNESS  WHEREOF,  the  parties  hereto  have  duly  executed  this
Agreement as of the day and year first above written.

         PROMEDCO MANAGEMENT COMPANY



         By
         Its
         Name





<PAGE>


                                                      -45-

         HP ACQUISITION CORP



         By
         Its
         Name


         HEALTH PLANS, INC.



         By
         Its
         Name

         PBMA HEALTH SYSTEMS, INC.



         By
         Its
         Name





45






<PAGE>


                                                      -46-

                             JOINDER BY SHAREHOLDERS

         The  undersigned  Shareholders  of Health  Plans,  Inc. and PBMA Health
Systems,  Inc.,  each a Maine  corporation,  hereby join the above Agreement for
Statutory  Merger for the purpose of being bound by the  provisions  of Sections
2.1.8 and 9.5 thereof.

Paul Barresi, M.D.

David L. Hall, M.D.

Gordon Paine, M.D.

John Wickenden, M.D.

Charles Gluck, M.D.

Dr. Johan Brouwer

Donald J. Weaver, M.D.

Corwin Olds, M.D.

Peter Shrier, M.D.

Onni Kangas. M.D.

Robert Sontheimer

Michael Florance

Valeri Saffer

Carol Brewer

Judy Arbuckle

Jeffery Kirby

Beth Williams

Matt McGovern


<PAGE>


                                                      -47-


Helen Leddy

Matt Flynn








47





<PAGE>


                                                      -48-


                               LIST OF APPENDICES

Number                     Description

2.1       Articles of Merger and Plan of Merger for the HSI Merger
2.2       Articles of Merger and Plan of Merger for the HP Merger
4.1       Bylaws of MergerSub
5.7       ProMedCo Tax Representation Letter
6.14      Constituent Corporation Tax Representation Letter
7.2       Form of opinion of ProMedCo's counsel to be delivered at the Closing
8.3       Form of opinion of HP's counsel to be delivered at the Closing
8.6       Form of stockholder and indemnification agreement
8.7       Shareholder Continuity of Interest Certificate
8.11A-C   Forms of Employment Agreement





<PAGE>


                                                      -49-


                                LIST OF EXHIBITS

Number                     Description

3.1A   List of States in which each Constituent Corporation is qualified to do 
       business
3.1B   Copies of the Constituent Corporations' Articles of Incorporation and 
       Bylaws
3.2A   HSI Capitalization
3.2B   HP Capitalization
3.3    Subsidiaries of the Constituent Corporations.
3.4A   HSI Financial Statements
3.4B   HP Financial Statements
3.7    Exceptions to Absence of Recent Changes Representation
3.8    Recent UCC reports on assets of the Constituent Corporations
3.9    Contracts
3.10   Exceptions to No Default Representation
3.15   Powers of Attorney
3.16   Guarantees
3.17   Permits and licenses
3.18   Bank Accounts
3.19A  Patents, etc.
3.19B  Licenses
3.21   Litigation
3.22   Notices of Violations
3.23A  Exceptions to Tax Representation
3.23B  Past Tax Returns
3.25   List of Employee Benefit Plans
3.26   List of Employee Benefit Plans not qualified underss.401(a) of the 
       Internal Revenue Code
3.27A  List of employees
3.27B  Description of Employee Benefits
3.28   List of Insurance coverages and bonds



49






<PAGE>


                                                      -1-

                                  APPENDIX 2.1

            ARTICLES OF MERGER AND PLAN OF MERGER FOR THE HSI MERGER





                                    EXHIBIT A

                                 PLAN OF MERGER
                                       of
                            PBMA Health Systems, Inc.
                                  with and into
                              HP Acquisition Corp.
           Pursuant to Section 901 of the Maine Business Corporation Act

         Pursuant to this Plan of Merger,  PBMA Health  Systems,  Inc.,  a Maine
corporation  ("HSI") will be merged (the  "Merger") with and into HP Acquisition
Corp., a Maine corporation  ("MergerSub").  In the Merger, MergerSub will be the
surviving corporation (the "Surviving Corporation"). The terms and conditions of
the Merger and the  consideration  to be paid by the Surviving  Corporation upon
surrender of each  outstanding  share of HSI not owned by  MergerSub  are as set
forth below:

         1. Effective Date. The Merger shall be effective (the "Effective Date")
on the date on which the  Articles  of Merger with  respect to the Merger  shall
have been duly  executed  and filed in the office of the  Secretary  of State of
Maine in accordance with the provisions of the Maine Business Corporation Act.

         2. Articles of  Incorporation.  From and after the Effective  Date, the
Articles of Incor poration of the Surviving  Corporation  shall be amended to be
the same as the Articles of Incor poration of the MergerSub except that the name
of the Surviving Corporation shall be "HP Acquisition Corp."

         3.  By-Laws.  From and after the  Effective  Date,  the  by-laws of the
MergerSub as they exist on the date hereof shall be the by-laws of the Surviving
Corporation.

         4.  Directors  and  Officers.  The  directors and officers of MergerSub
immediately  prior to the  Effective  Date shall be the officers and  directors,
respectively,  of the Surviving  Corpora tion,  to serve,  in both cases,  until
their  successors  shall have been elected and shall qualify or until  otherwise
provided by law and the Articles of  Incorporation  and by-laws of the Surviving
Corporation.


1






<PAGE>


                                                      -2-

         5. Exchange of Shares for Cash and/or Securities.  The manner and basis
of exchang ing and  converting  the shares of common stock of the  MergerSub and
HSI on the Effective Date shall be as follows:

(a)  Common Stock of  MergerSub.  By virtue of the Merger and without any action
     of the holder  thereof each share of common stock of MergerSub  outstanding
     on the Effective Date shall remain  outstanding and unchanged as a share of
     the common stock of the Surviving Corporation.

(b)  Common  Stock of HSI. By virtue of the merger and without any action of the
     holders  thereof  each share of (i) the no par value Class A Voting  Common
     Stock  of  HSI  and  (ii)  the  Class  B  Non-Voting  Common  Stock  of HSI
     (collectively  the "HSI Common  Stock")  outstanding at the Effec tive Date
     shall be  reclassified  into the right to  receive  the  portion of the HSI
     Consideration  determined in accordance with the formula set forth in ss. 7
     hereof and  distributable in accordance with the time schedule set forth in
     the Merger Agreement,  except that any share of HSI Common Stock then owned
     by HSI shall be canceled.

         6.  Rights  of  HSI's  Stockholders   Pending  and  Upon  Surrender  of
Certificates. From and after the Effective Date, except as provided in the Maine
Business Corporation Act with respect to rights of dissenting stockholders, each
holder  of a  certificate  representing  shares  of HSI  Common  Stock  shall be
entitled,  upon surrender  thereof to the Surviving  Corporation,  to receive in
exchange  therefor the portion of the  Consideration  to which such holder would
otherwise be entitled on the basis provided for in this Plan of Merger.

         7.  Exchange  Formula.  As a result of the  Closing,  each share of HSI
Common Stock shall be exchanged  for the right to receive the portion of the HSI
Consideration  obtained by dividing (x) HSI Consideration,  as adjusted pursuant
to ss. 2.10 of the Merger  Agreement,  by (y) the number of shares of HSI Common
Stock issued and outstanding  immediately prior to the Effective Date other than
those owned by HSI or MergerSub. Each former HSI Shareholder entitled to receive
HSI consideration  shall have the right to elect to receive a portion of the HSI
Consideration  distribution  to him or her as cash in  lieu  of  ProMedCo  Stock
consistent  with the  following  restrictions:  the HSI  Consideration  shall be
comprised of (x) the number of shares of ProMedCo Stock, valued at the Tax Value
per share,  equal to at least 50% of the portion of the HSI  Consideration  then
being distributed  (including cash paid in lieu of fractional  shares),  and (y)
cash in the amount  determined  by  subtracting  the aggregate Tax Value of such
shares from the HSI Consideration.  The Surviving  Corporation shall not deliver
any fraction of a share of ProMedCo Common Stock but will deliver a whole number
of shares of ProMedCo  Common Stock rounded up to the next whole number with the
value of the fractional share being reflected in the amount of cash distributed.
ProMedCo shall have the option in its sole discretion of




<PAGE>


                                                      -3-

effecting a cash merger if the price per share of ProMedCo  common stock is less
than $8.00 in the agreed-upon period prior to closing.

         8. HSI Stock  Transfer  Books.  From and after the Effective  Date, the
transfer of the shares of HSI Common Stock  outstanding  prior to the  Effective
Date shall not be made on the stock transfer books.

         9. Vesting of Rights in the  Surviving  Corporation.  Immediately  upon
filing the Articles of Merger, HSI shall cease its separate  existence;  all the
properties  (real,  personal  and  mixed),   rights,   immunities,   privileges,
franchises,  choses in  action  and all  other  assets of HSI shall  vest in the
Surviving  Corporation without further act; and the Surviving  Corporation shall
assume all the liabilities, duties and obligations of HSI.

         10.  Assumption of  Responsibilities.  The Surviving  Corporation shall
assume  and  accept  responsibility  for  any  obligations  of HSI  accruing  to
shareholders  of HSI other than MergerSub  under the Maine Business  Corporation
Act arising from the effectuation of this Plan of Merger.

         11.  Merger  Agreement.  To the  extent  the  provisions  of the Merger
Agreement are not inconsistent  with this Plan of Merger,  such provisions shall
govern the rights of HSI and MergerSub.

         12. Definitions. For the purposes of this Plan of Merger, the following
definitions shall apply;  certain other terms are defined elsewhere in this Plan
of Merger.

"Consideration"   means  the  amount   defined  in  the  Merger   Agreement   as
         "Consideration," which amount shall be no less than $7,500,000.

"Effective Date" is defined in ss. 1 hereof.

"HP      Common Stock" means, collectively, (i) the $.01 par value Voting Common
         Stock of Health Plans, Inc., (ii) the $.01 par value B Nonvoting Common
         Stock of Health  Plans,  Inc. and (iii) the $15.00 par value  Nonvoting
         Convertible Preferred Stock of Health Plans, Inc.

"HSI" means PBMA Health Systems, Inc., a Maine corporation.

"HSI Common Stock" is defined in ss. 5(b) hereof.

"HSI     Consideration"   means  the  amount   obtained   by   multiplying   the
         Consideration  by a fraction,  the (x) numerator of which is the number
         of shares of HP Common Stock held

3






<PAGE>


                                                      -4-

         by HSI  immediately  prior to the  Closing and (y) the  denominator  of
         which  is  the  number  of  shares  of  HP  Common  Stock   outstanding
         immediately prior to the Closing.  The HSI Consideration  shall consist
         of (A) shares of ProMedCo  Stock having an aggregate  value (based on a
         per share  value  equal to the Tax Value)  equal at least to 50% of the
         total HSI Consideration  (increased to the extent, if any, necessary to
         reflect  payments to dissent ers), as set forth in ss. 7 hereof,  , and
         (B) cash  (including  cash paid in lieu of fractional  shares) equal to
         the total HSI Consideration  less the aggregate value of such shares of
         ProMedCo  Stock (based on a per share value equal to the greater of the
         Tax Value or the Market Value).

"Market  Value" means $8.80 per share if the average  closing  price of ProMedCo
         $.01 par  value  common  stock for the five  trading  days  ending  two
         trading  days prior to the Closing is greater  than $8.36 and less than
         $10.56; if such average closing price is $8.36 or less,  "Market Value"
         shall mean such average  closing  price plus $.44;  and if such average
         price is $10.56 or  greater,  "Market  Value"  shall mean such  average
         closing price less $1.76.

"Merger  Agreement"  means  the  Agreement  for  Statutory  Mergers  dated as of
         July26, 1997 among ProMedCo,  MergerSub,  HSI and Health Plans, Inc., a
         Maine corporation.

"MergerSub" means HP Acquisition  Corp., a Maine  corporation and a wholly-owned
         subsidiary of ProMedCo.

"ProMedCo" means ProMedCo Management Company, a Delaware corporation.

"Surviving Corporation" is defined in the preamble hereof.

"Tax     Value" means the lesser of (x) Market Value or (y) the average  closing
         price of ProMedCo  Stock for the five  trading  days ending two trading
         days prior to the Closing  under the Merger  Agreement  less a discount
         determined by Piper Jaffray & Company,  ProMedCo's  investment bankers,
         necessary to reflect,  as of the Closing  Date,  the economic  value of
         unregistered ProMedCo Stock subject to the restrictions contemplated by
         this  Agreement,  including the holding period  required by Rule 144 of
         the Securities and Exchange  Commission and the tax  representations to
         be  signed  by  the  Shareholders  pursuant  to ss.  8.7 of the  Merger
         Agreement.







<PAGE>


                                                      -1-

                                  APPENDIX 2.2

             ARTICLES OF MERGER AND PLAN OF MERGER FOR THE HP MERGER





                                    EXHIBIT A

                                 PLAN OF MERGER
                                       of
                               Health Plans, Inc.
                                  with and into
                              HP Acquisition Corp.
            Pursuant to Section 901 of the Maine Business Corporation Act

         Pursuant  to  this  Plan  of  Merger,   Health  Plans,  Inc.,  a  Maine
corporation  ("HP") will be merged (the  "Merger")  with and into HP Acquisition
Corp., a Maine  corporation  ("MergerSub").  In the Merger MergerSub will be the
surviving corporation (the "Surviving Corporation"). The terms and conditions of
the Merger and the  consideration to be paid by the Surviving  Corpora tion upon
surrender  of each  outstanding  share of HP not owned by  MergerSub  are as set
forth below:

         1. Effective Date. The Merger shall be effective (the "Effective Date")
on the date on which the  Articles  of Merger with  respect to the Merger  shall
have been duly  executed  and filed in the office of the  Secretary  of State of
Maine in accordance with the provisions of the Maine Business  Corporation  Act,
immediately after the effectiveness of the merger of PBMA Health Systems,  Inc.,
a Maine corporation, with and into MergerSub.

         2. Articles of  Incorporation.  From and after the Effective  Date, the
Articles of Incor poration of the Surviving  Corporation  shall be amended to be
the same as the Articles of Incor poration of the MergerSub except that the name
of the Surviving Corporation shall be "Health Plans, Inc."

         3.  By-Laws.  From and after the  Effective  Date,  the  by-laws of the
MergerSub as they exist on the date hereof shall be the by-laws of the Surviving
Corporation.

         4.  Directors  and  Officers.  The  directors and officers of MergerSub
immediately  prior to the  Effective  Date shall be the officers and  directors,
respectively,  of the Surviving  Corpora tion,  to serve,  in both cases,  until
their  successors  shall have been elected and shall qualify or until  otherwise
provided by law and the Articles of  Incorporation  and by-laws of the Surviving
Corporation.

1






<PAGE>


                                                      -2-


         5. Exchange of Shares for Cash and/or Securities.  The manner and basis
of exchang ing and converting the shares of common stock of the MergerSub and HP
on the Effective Date shall be as follows:

(a)  Common Stock of  MergerSub.  By virtue of the Merger and without any action
     of the holder  thereof each share of common stock of MergerSub  outstanding
     on the Effective Date shall remain  outstanding and unchanged as a share of
     the common stock of the Surviving Corporation.

(b)  Common  Stock of HP. By virtue of the merger and  without any action of the
     holders thereof each share of (i) the $.01 par value Voting Common Stock of
     HP,  (ii) the $.01 par value B Nonvoting  Common  Stock of HP and (iii) the
     $15.00 par value Nonvoting  Convertible Preferred Stock of HP, including in
     each  instance  those shares owned by MergerSub by virtue of the HSI Merger
     (collectively  the "HP Common  Stock")  outstand ing at the Effective  Date
     shall be  reclassified  into the right to  receive  the  portion  of the HP
     Consideration  determined in  accordance  with the formula set forth inss.7
     hereof and  distributable in accordance with the time schedule set forth in
     such section,  except that any share of HP Common Stock then owned by HP or
     MergerSub shall be canceled.

         6.  Rights  of  HP's   Stockholders   Pending  and  Upon  Surrender  of
Certificates. From and after the Effective Date, except as provided in the Maine
Business Corporation Act with respect to rights of dissenting stockholders, each
holder  of a  certificate  representing  shares  of HP  Common  Stock  shall  be
entitled,  upon surrender  thereof to the Surviving  Corporation,  to receive in
exchange  therefor the portion of the  Consideration  to which such holder would
otherwise be entitled on the basis provided for in this Plan of Merger.

         7. Exchange Formula. As a result of the Merger, each share of HP Common
Stock,  including  those  shares owned by MergerSub by virtue of the HSI Merger,
shall be exchanged for the right to receive the portion of the HP  Consideration
obtained  by dividing  (x) HP  Consider  ation by (y) the number of shares of HP
Common Stock issued and  outstanding  immediately  prior to the  Effective  Date
excluding  the  shares  owned  by  MergerSub.  The  HP  Consideration  shall  be
distributed  in  accordance  with the terms and time  schedule  set forth in the
Merger  Agreement.  The deemed  value per share of ProMedCo  common  stock,  for
purposes of calculat ing the HP  Consideration,  shall be the Market Value.  The
Surviving  Corporation  shall not  deliver  any  fraction of a share of ProMedCo
Common Stock but will deliver a whole number of shares of ProMedCo  Common Stock
rounded  down to the next whole  number with the value of the  fractional  share
being  reflected  in the  amount of cash  distributed.  ProMedCo  shall have the
option in its sole  discretion of effecting a cash merger if the price per share
of ProMedCo common stock is less than $8.00 in the  agreed-upon  period prior to
closing. In the event of such




<PAGE>


                                                      -3-

election by ProMedCo,  the HP  Consideration  shall be grossed up to account for
the adverse tax consequences of a cash-only  merger to the HP  shareholders,  as
set forth in greater detail in the Merger Agreement.

         8. HP Stock  Transfer  Books.  From and after the Effective  Date,  the
transfer of the shares of HP Common  Stock  outstanding  prior to the  Effective
Date shall not be made on the stock transfer books.

         9. Vesting of Rights in the  Surviving  Corporation.  Immediately  upon
filing the Articles of Merger,  HP shall cease its separate  existence;  all the
properties  (real,  personal  and  mixed),   rights,   immunities,   privileges,
franchises,  choses in  action  and all  other  assets  of HP shall  vest in the
Surviving  Corporation without further act; and the Surviving  Corporation shall
assume all the liabilities, duties and obligations of HP.

         10.  Assumption of  Responsibilities.  The Surviving  Corporation shall
assume  and  accept  responsibility  for  any  obligations  of  HP  accruing  to
shareholders of HP other than MergerSub under the Maine Business Corporation Act
arising from the effectuation of this Plan of Merger.

         11.  Merger  Agreement.  To the  extent  the  provisions  of the Merger
Agreement are not inconsistent  with this Plan of Merger,  such provisions shall
govern the rights of HP and MergerSub.

         12. Definitions. For the purposes of this Plan of Merger, the following
definitions shall apply;  certain other terms are defined elsewhere in this Plan
of Merger.

"Effective Date" is defined in ss. 1 hereof.

"HP Common Stock" is defined in ss. 5 hereof.

"HP      Consideration" means shares of ProMedCo Stock at valued at Market Value
         having  an  aggregate  value  equal to the  Consideration  less the HSI
         Consideration.

"HSI     Consideration"   means  the  amount   obtained   by   multiplying   the
         Consideration  by a fraction,  the (x) numerator of which is the number
         of shares of HP Common Stock held immediately  prior to the Closing and
         (y) the denominator of which is the number of shares of HP Common Stock
         outstanding  immediately  prior to the  Closing.  Pursuant to ss. 7, at
         least  50% of the HSI  Consideration  shall  consist  of (x)  shares of
         ProMedCo  Stock having a per share value equal to the Tax Value thereof
         and (y) cash equal to HSI  Consideration  less the aggregate value such
         shares of ProMedCo Stock based on the Tax Value of each share.

3






<PAGE>


                                                      -4-

"HSI Merger" is defined in ss.  2.1 of the Merger Agreement.

"Market  Value" means $8.80 per share if the average  closing  price of ProMedCo
         $.01 par  value  common  stock for the five  trading  days  ending  two
         trading  days prior to the Closing is greater  than $8.36 and less than
         $10.56; if such average closing price is $8.36 or less,  "Market Value"
         shall mean such average  closing  price plus $.44;  and if such average
         price is $10.56 or  greater,  "Market  Value"  shall mean such  average
         closing price less $1.76.

"Merger  Agreement" means the Agreement for Statutory Mergers dated July26, 1997
         among ProMedCo,  MergerSub,  HP and PBMA Health Systems,  Inc., a Maine
         corporation.

"MergerSub" means HP Acquisition  Corp., a Maine  corporation and a wholly-owned
         subsidiary of ProMedCo.

"ProMedCo" means ProMedCo Management Company, a Delaware corporation.

"Surviving Corporation" is defined in the preamble hereof.

"Tax     Value" means the lesser of (x) Market Value or (y) the average  closing
         price of ProMedCo  Stock for the five  trading  days ending two trading
         days prior to the Closing  under the Merger  Agreement  less a discount
         determined by Piper Jaffray & Company,  ProMedCo's  investment bankers,
         necessary to reflect,  as of the Closing  Date,  the economic  value of
         unregistered ProMedCo Stock subject to the restrictions contemplated by
         this  Agreement,  including the holding period  required by Rule 144 of
         the Securities and Exchange  Commission and the tax  representations to
         be  signed  by  the  Shareholders  pursuant  to ss.  8.7 of the  Merger
         Agreement.





<PAGE>


                                                      -1-

                                  APPENDIX 4.1

                                    BYLAWS OF

                              HP ACQUISITION CORP.


                                    ARTICLE I

                                     OFFICES


         Section 1.1  Registered Office.  The registered office shall be in the 
City of Augusta, State of Maine.

         Section 1.2 Other  Offices.  The  corporation  may also have offices at
such other  places both  within and without the State of Maine,  as the board of
directors may from time to time determine or the business of the corporation may
require.

                                   ARTICLE II

                            MEETINGS OF SHAREHOLDERS

         Section 2.1 Annual  Meeting.  An annual meeting of  shareholders of the
corporation  shall be held on such date and at such time as shall be  designated
from  time to time by the board of  directors  and  stated in the  notice of the
meeting.  At such meeting,  the shareholders  shall elect directors and transact
such other business as may properly be brought before the meeting.

         Section 2.2 Special Meetings.  Special meetings of the shareholders for
any purpose whatsoever may be called at any time by the president,  the board of
directors, or the holders of not less than ten percent of all shares entitled to
vote at such meeting.

         Section 2.3 Place of  Meetings.  All meetings of  shareholders  for any
purpose or purposes may be held at such  places,  within or without the State of
Maine,  as may from time to time be fixed by the board of  directors or as shall
be stated in the notice of the  meeting or in a duly  executed  waiver of notice
thereof.

         Section 2.4 Notice.  Written notice stating the place,  day and hour of
the meeting and, in the case of a special  meeting,  the purpose or purposes for
which  the  meeting  is  called,  shall be given not less than ten nor more than
sixty days before the date of the meeting, either personally or by mail.


1






<PAGE>


                                                      -2-

         Section  2.5 Quorum of  Shareholders.  The holders of a majority of the
shares issued and outstanding  and entitled to vote at such meeting,  present in
person or represented by proxy shall  constitute a quorum for the transaction of
business at all meetings of the shareholders.

         Section 2.6 Voting of Shares.  Except as otherwise  provided by statute
or the  articles of  incorporation,  each holder of record of shares of stock of
the  Corporation  having  voting  power shall be entitled at each meeting of the
shareholders  to one vote for every  share of such stock  standing in his or her
name on the record books of shareholders of the corporation on the date on which
such  notice of the  meeting  is mailed,  unless  some other day is fixed by the
board of directors for the determination of shareholders of record.

         Section  2.7  Voting  List.  The  officer  who has  charge of the stock
transfer  books for shares of the  corporation  shall  prepare at least ten days
before  every  meeting  of  shareholders,  a complete  list of the  shareholders
entitled to vote at such meeting,  arranged in alphabetical order, including the
address  of each  shareholder  and the  number  of  voting  shares  held by each
shareholder.  For a period of ten days prior to such meeting, such list shall be
kept open to the examination of any shareholder,  for any purpose germane to the
meeting, during ordinary business hours, either at a place within the city where
the meeting is to be held and which place  shall be  specified  in the notice of
the meeting,  or, if not so specified,  at the place where said meeting is to be
held.  Such list shall be produced at such  meeting and at all times during such
meeting shall be subject to inspection by any  shareholder.  The original  stock
transfer  books  shall be prima facie  evidence  as to who are the  shareholders
entitled to examine such list or stock transfer books.

         Section 2.8 Treasury Stock. The corporation shall not vote, directly or
indirectly,  shares of its own stock  owned by it and such  shares  shall not be
counted for quorum purposes.

         Section 2.9 Consent of  Shareholders  in Lieu of Meeting.  Whenever the
vote of  shareholders  at a meeting thereof is required or permitted to be taken
for or in connection with any corporate action, the meeting, the notice thereof,
and the vote of  shareholders  can be dispensed  with,  if a consent in writing,
setting forth the action so taken,  shall be signed by the holders of all of the
issued and outstanding stock.

                                   ARTICLE III

                                    DIRECTORS

         Section  3.1  Powers of  Directors.  The  business  and  affairs of the
corporation  shall be managed by its board of directors which shall have and may
exercise all such powers of the corporation, subject to the restrictions imposed
by law, the articles of incorporation, or these bylaws.





<PAGE>


                                                      -3-

         Section 3.2 Number and  Qualification.  The number of  directors  which
shall constitute the entire board of directors shall be determined by resolution
of the board of directors at any meeting  thereof or by the  shareholders at any
meeting thereof. Directors need not be residents of Maine or shareholders of the
corporation.

         Section 3.3 Election and Term of Office. The directors shall be elected
annually by the shareholders, except as provided in Section 3.4 of these bylaws.
Each  director  shall hold office until the next  succeeding  annual  meeting of
shareholders and until his or her successor shall have been elected or until his
or her earlier death,  resignation,  or removal.  The board of directors may, by
resolution,  appoint one of its members as chairman to preside over  meetings of
the board of directors. The position of chairman of the board of directors shall
not be an office of the corporation.

         Section 3.4 Vacancies.  Any vacancy occurring in the board of directors
by reason of death, resignation, or removal may be filled by affirmative vote of
a majority of the remaining directors,  although less than a quorum of the board
of  directors.  Such  vacancy  may also be  filled  by  affirmative  vote of the
majority  of the  shareholders.  A director  elected to fill a vacancy  shall be
elected for the unexpired term of his or her  predecessor in office or until his
or her death, resignation, retirement, disqualification, or removal.

         Section 3.5  Resignation  of  Directors.  Any  director may resign from
office at any time by delivering a written  resignation  to the secretary of the
corporation,  and such  resignation  shall be  effective  upon  delivery of such
resignation to the secretary.

         Section 3.6  Removal of Directors.  Any director may be removed with or
without cause at any time by the shareholders.

         Section 3.7 Place of Meetings. Regular or special meetings of the board
of directors may be held either within or without the State of Maine.

         Section  3.8  Regular  Meetings.  Regular  meetings  of  the  board  of
directors  may be  held  without  notice  at such  times  and  places  as may be
designated from time to time as may be determined by the board of directors.

         Section  3.9  Special  Meetings.  Special  meetings  of  the  board  of
directors  may be called by the  president or any director on  twenty-four  (24)
hours notice to each director, either personally or by telephone, mail, telegram
or other means of telecommunications.  Neither the business to be transacted at,
nor the  purpose  of,  any  special  meeting of the board of  directors  need be
specified in the notice or waiver of notice of any special meeting.


3






<PAGE>


                                                      -4-

         Section  3.10  Quorum of  Directors.  At all  meetings  of the board of
directors,  a  majority  of the  directors  shall  constitute  a quorum  for the
transaction  of business and the act or a majority of the  directors  present at
any  meeting  at  which  there  is a  quorum  shall  be an act of the  board  of
directors.  If a quorum is not present at a meeting, a majority of the directors
present may adjourn the meeting from time to time,  without notice other than an
announcement at the meeting, until a quorum is present.

         Section  3.11  Committees.  The board of directors  may, by  resolution
passed by a majority  of the entire  board,  designate  one or more  committees,
including,  if they  shall so  determine,  an  executive  committee,  each  such
committee  to consist of one or more of the  directors of the  corporation.  Any
such  designated  committee  shall have and may exercise  such of the powers and
authority  of the board of  directors  in the  management  of the  business  and
affairs of the corporation as may be provided in such resolution, except that no
such  committee  shall have the power or  authority of the board of directors in
reference to amending the  articles of  incorporation,  adopting an agreement of
merger or  consolidation,  recommending to the  shareholders  the sale, lease or
exchange of all or substantially all of the  corporation's  property and assets,
recommending  to  the  shareholders  a  dissolution  of  the  corporation  or  a
revocation  of a  dissolution  of the  corporation,  or  amending,  altering  or
repealing the bylaws or adopting new bylaws for the corporation and, unless such
resolution  or the articles of  incorporation  expressly  so  provides,  no such
committee  shall have the power or authority to authorize the issuance of stock.
The board of directors shall have the power at any time to change the number and
members of any such  committee,  to fill  vacancies  and to  discharge  any such
committee.

         Section 3.12  Compensation  of Directors.  The board of directors shall
have authority to determine,  from time to time, the amount of compensation,  if
any,  which shall be paid to its members for their  services as directors and as
members of committees of the board of  directors.  The board of directors  shall
also  have  power  in its  discretion  to  provide  for and to pay to  directors
rendering  services to the corporation  not ordinarily  rendered by directors as
such,  special  compensation  appropriate  to the  value  of  such  services  as
determined by the board of directors from time to time. Nothing herein contained
shall be construed to preclude any director from serving the  corporation in any
other capacity and receiving compensation therefor.

         Section 3.13 Action by Unanimous  Written Consent.  Any action required
or permitted to be taken at a meeting of the board of directors or any committee
may be taken  without  a meeting  if a consent  in  writing,  setting  forth the
actions so taken,  is signed by all of the members of the board of  directors or
such committee, as the case may be.

         Section  3.14 Minutes of  Meetings.  The board of directors  shall keep
regular  minutes  of its  proceedings  and such  minutes  shall be placed in the
minute  book of the  corporation.  Committees  of the board of  directors  shall
maintain a separate record of the minutes of their proceedings.





<PAGE>


                                                      -5-

                                   ARTICLE IV

                         NOTICES AND TELEPHONE MEETINGS

         Section 4.1 Notice. Any notice to directors or shareholders shall be in
writing and shall be delivered  personally or by mail,  telegram,  telex, cable,
telecopier or similar means to the directors or shareholders at their respective
addresses  appearing  on the books of the  corporation.  Notice by mail shall be
deemed to be given at the time when the same  shall be  deposited  in the United
States mail,  postage  prepaid.  Any notice required or permitted to be given by
telegram,  telex,  cable,  telecopier,  or similar  means  shall be deemed to be
delivered and given at the time transmitted.

         Section  4.2  Waiver  of  Notice.  Whenever  by law,  the  articles  of
incorporation,  or  these  bylaws,  notice  is  required  to  be  given  to  any
shareholder,  director, or committee member of the corporation, a waiver thereof
in writing  signed by the person or persons  entitled  to such  notice,  whether
before or after the time notice  should have been given,  shall be equivalent to
the  giving  of  such  notice.  Attendance  of a  director  at a  meeting  shall
constitute a waiver of notice of such meeting, except where a director attends a
meeting for the express  purpose of objecting to the transaction of any business
on the ground that the meeting is not lawfully called or convened.

         Section 4.3 Telephone and Similar Meetings. Shareholders, directors, or
committee members may participate in and hold a meeting by means of a conference
telephone  or  similar  communications  equipment  by  means  of  which  persons
participating  in the  meeting  can hear  each  other.  Participation  in such a
meeting  shall  constitute  presence in person at such  meeting,  except where a
person  participates  in the meeting for the express purpose of objecting to the
transaction  of any  business  on the ground  that the  meeting is not  lawfully
called or convened.

                                    ARTICLE V

                                    OFFICERS

         Section 5.1  Officers.  The  corporation  shall have a president  and a
secretary and such other  officers and assistant  officers as the board may deem
desirable to conduct the affairs of the corporation. The position of chairman of
the board of  directors  shall not be an office of the  corporation.  Any two or
more offices may be held by the same person. No officer need be a shareholder or
a director.

         Section  5.2  Powers  and  Duties  of  Officers.  The  officers  of the
corporation  shall  have  the  powers  and  duties  generally  ascribed  to  the
respective  offices,  and such additional  authority or duty as may from time to
time be established by the board of directors.


5






<PAGE>


                                                      -6-

         Section 5.3 Removal and Resignation. Any officer appointed by the board
of directors may be removed by the board of directors whenever,  in the judgment
of the board of directors,  the best interests of the corporation will be served
thereby.  Any  officer  may resign at any time by giving  written  notice to the
corporation.  Any such  resignation  shall take effect at the date of receipt of
such notice or at a later time specified therein, and unless otherwise specified
therein,  the acceptance of such  resignation  shall not be necessary to make it
effective.

         Section 5.4 Term and Vacancies.  The officers of the corporation  shall
hold office  until their  successors  are elected or  appointed,  or until their
death, resignation,  or removal from office. Any vacancy occurring in any office
of the corporation by death,  resignation,  removal, or otherwise, may be filled
by the board of directors.

         Section  5.5  Compensation.   The  salaries  of  all  officers  of  the
corporation  shall be fixed by the board of  directors.  The board of  directors
shall have the power to enter into contracts for the employment and compensation
of officers on such terms as the board of directors deems advisable.  No officer
shall be disqualified from receiving a salary or other compensation by reason of
the fact that he or she is also a director of the corporation.

                                   ARTICLE VI

                          CERTIFICATES AND SHAREHOLDERS

         Section 6.1  Certificates  for Shares.  The  certificates for shares of
stock of the  Corpora  tion  shall be in such form as shall be  approved  by the
board of directors  in  conformity  with law and the articles of  incorporation.
Every  certificate  for shares issued by the  corporation  must be signed by the
President or a Vice President and the Secretary or an Assistant  Secretary under
the seal of the  corporation.  Any or all of the  signatures  on the face of the
certificate may be facsimile.  Such certificates  shall bear a legend or legends
in the form and  containing the  restrictions  to be stated thereon by the Maine
Business  Corporation  Act (the "Maine  Code"),  other  provisions  of law,  the
articles of incorporation or these bylaws.  Certificates  shall be consecutively
numbered and shall be entered as they are issued.  Each certificate  shall state
on the face thereof the holder's name,  the number and class of shares,  the par
value of such  shares,  and such other  matters as may be required  by law,  the
articles of incorporation or these bylaws.

         Section  6.2 Lost,  Stolen,  or  Destroyed  Certificates.  The board of
directors,  the executive  committee,  or the president of the  corporation  may
direct a new  certificate or  certificates  representing  shares to be issued in
place of any certificate or certificates  theretofore  issued by the corporation
alleged to have been lost, stolen, or destroyed, upon the making of an affidavit
of the fact by the person  claiming the  certificate or certificates to be lost,
stolen, or destroyed. When authorizing such issue of a new certificate the board
of directors,  the executive committee or the president may require the owner of
such lost, stolen, or destroyed certificate, or his or her legal representative,
to  advertise  the same in such manner as it or he or she shall  require  and/or
give




<PAGE>


                                                      -7-

the  corporation  a bond in such sum as it may direct as  indemnity  against any
claim that may be made against the  corporation  with respect to the certificate
alleged to have been lost, stolen or destroyed.

         Section  6.3  Transfer  of Shares.  Shares of stock of the  corporation
shall be transferable only on the books of the corporation by the holder thereof
in person or by the holder's duly authorized attorneys or legal representatives.
Upon surrender to the  corporation or the transfer agent of the corporation of a
certificate  representing shares duly endorsed or accompanied by proper evidence
of  succession,  assignment,  or authority to transfer,  the  corporation or its
transfer  agent shall issue a new  certificate to the person  entitled  thereto,
cancel the old certificate, and record the transaction upon its books.

         Section 6.4 Registered Shareholders.  The corporation shall be entitled
to recognize  the  exclusive  right of a person  registered  on its books as the
owner of shares to receive  dividends,  and to vote as such  owner,  and to hold
liable for calls and assessments,  a person registered on its books as the owner
of shares,  and shall not be bound to recognize  any equitable or other claim to
or interest  in such  shares on the part of any person,  whether or not it shall
have actual or other notice thereof, except as otherwise provided by law.

                                   ARTICLE VII

                            MISCELLANEOUS PROVISIONS

         Section 7.1  Dividends.  Dividends upon the  outstanding  shares of the
corporation,  subject to the  provisions of the  applicable  statutes and of the
articles of  incorporation,  may be declared  by the board of  directors  at any
annual, regular or special meeting.  Dividends may be declared and paid in cash,
in property, or in shares of the corporation, or in any combination thereof.

         Section  7.2  Reserves.  There may be set aside out of any funds of the
corporation  available for dividends  such sum or sums as the board of directors
from  time to time in their  sole and  absolute  discretion  think  proper  as a
reserve  to meet  contingencies,  or to  equalize  dividends,  or to  repair  or
maintain any property of the corporation, or for such other purpose as the board
of directors shall think conducive to the interest of the  corporation,  and the
board of directors may modify or abolish any such reserve in the manner in which
it was created.

         Section 7.3 Signature of Negotiable Instruments.  All checks or demands
for money  and notes of the  corporation  shall be  signed  by such  officer  or
officers or such other person or persons as the board of directors may from time
to time designate.


7






<PAGE>


                                                      -8-

         Section 7.4 Fiscal Year.  The fiscal year of the  corporation  shall be
fixed by the board of directors; provided, that if such fiscal year is not fixed
by the board of directors it shall be the calendar year.

         Section 7.5 Books of the Corporation.  The books of the corporation may
be kept, subject to the provisions of the applicable statutes, within or outside
of the  State of  Maine,  at such  place or  places  as may from time to time be
designated by the board of directors or as the business of the  corporation  may
require.

         Section 7.6 Seal. The seal, if any, of the corporation shall be in such
form as may be  approved  from  time to time by the board of  directors.  If the
board of directors  approves a seal,  the  affixation  of such seal shall not be
required to create a valid and binding obligation against the corporation.

         Section 7.7 Securities of Other Corporations.  Unless otherwise ordered
by the board of directors,  the  president or the  secretary of the  corporation
shall have full power and authority on behalf of the  corporation to attend,  to
vote and to grant  proxies  to be used at any  meeting of  shareholders  of such
other  corporation  in which  the  corporation  may  hold  stock.  The  board of
directors may confer like powers upon any other person or persons.

         Section  7.8 Fixed  Record  Date.  In order  that the  corporation  may
determine  the  shareholders  entitled to notice of or to vote at any meeting of
shareholders  or any  adjournment  thereof,  or to express  consent to corporate
action in  writing  without a meeting,  or  entitled  to receive  payment of any
dividend  or other  distribution  or  allotment  of any  rights,  or entitled to
exercise  any rights in respect of any change,  conversion  or exchange of stock
for the purpose of any other lawful  action,  the board of directors may fix, in
advance,  a record  date which  shall be not more than sixty 60 days  before the
date of such meeting, nor more than 60 days prior to any other action.

         Section  7.9  Amendment.  The power to alter,  amend,  or repeal  these
bylaws or to adopt new bylaws is vested in the board of directors.

         Section 7.10  Right to Indemnification.

         (A) Each  person  (hereinafter  an  "indemnitee")  who was or is made a
party or is  threatened  to be made a party to or is  otherwise  involved in any
action,  suit  or  proceeding,   whether  civil,  criminal,   administrative  or
investigative (hereinafter a "proceeding"), by reason of the fact that he or she
was a  director,  officer  or  agent  of  the  corporation  or  any  predecessor
corporation  or is or was  serving  at the  request  of the  corporation  or any
predecessor  corporation  as a director,  officer,  employee or agent of another
corporation  or of a  partnership,  joint  venture,  trust or other  enterprise,
including service with respect to an employee benefit plan, whether the basis of
such  proceeding  is  alleged  action in an  official  capacity  as a  director,
officer, employee




<PAGE>


                                                      -9-

or agent,  shall be  indemnified  and held  harmless by the  corporation  to the
fullest extent authorized by the Maine Code, as the same exists or may hereafter
be amended (but, in the case of any such amendment, only to the extent that such
amendment permits the corporation to provide broader indemnification rights than
permitted  prior  thereto),  against all expense,  liability and loss (including
attorney's fees,  judgments,  fines, ERISA excise taxes or penalties and amounts
paid in settlement) reasonably incurred or suffered by such indemnitee in connec
tion  therewith,  and such  indemnification  shall  continue  with respect to an
indemnitee who has ceased to be a director, officer, employee or agent and shall
inure to the benefit of the indemni tee's heirs,  executors and  administrators;
provided, however, that, except as provided in paragraph (B) hereof with respect
to proceedings  to enforce  rights to  indemnification,  the  corporation  shall
indemnify  any such  indemnitee  only if such  proceeding  (or part thereof) was
authorized  by the board of  directors  of the  corporation  or any  predecessor
corporation.  The right to indemnification  conferred in this section shall be a
contract  right and shall  include the right to be paid by the  corporation  the
expenses  incurred  in  defending  any such  proceeding  in advance of its final
disposition (hereinafter an "advancement of expenses"); provided, however, that,
if the Maine Code requires, an advancement of expenses incurred by an indemnitee
shall  be  made  only  upon  delivery  to  the  corporation  of  an  undertaking
(hereinafter an "undertaking"), by or on behalf of such indemnitee, to repay all
amounts so advanced  if it shall  ultimately  be  determined  by final  judicial
decision  from which there is no further right to appeal  (hereinafter  a "final
adjudication")  that such  indemnitee is not entitled to be indemnified for such
expenses under this section or otherwise.

         (B) If a claim under  paragraph (A) of this section is not paid in full
by the corporation within 60 days after a written claim has been received by the
corporation,  except in the case of a claim for an advancement  of expenses,  in
which case the  applicable  period shall be 20 days,  the  indemnitee may at any
time thereafter  bring suit against the corporation to recover the unpaid amount
of such suit, or in a suit brought by the  corporation to recover an advancement
of expenses  pursuant to the terms of an  undertaking,  the indemnitee  shall be
entitled to be paid also the expense of  prosecuting  or defending such suit. In
(i) any suit  brought by the  indemnitee  to enforce a right to  indemnification
hereunder  (but not in a suit brought by the indemnitee to enforce a right to an
advancement  of expenses) it shall be a defense  that,  and (ii) any suit by the
corporation to recover an  advancement  of expenses  pursuant to the terms of an
undertaking  the  corporation  shall be entitled to recover such expenses upon a
final adjudication  that, the indemnitee has not met the applicable  standard of
conduct  set forth in the Maine Code.  Neither  the  failure of the  corporation
(including  its  board  of  directors,   independent   legal  counsel,   or  its
shareholders)  to have made a  determination  prior to the  commencement of such
suit that  indemnification  of the  indemnitee  is  proper in the  circumstances
because the indemnitee  has met the applicable  standard of conduct set forth in
the Maine Code, nor an actual  determination  by the corporation  (including its
board of directors,  independent legal counsel,  or its  shareholders)  that the
indemnitee  has not met such  applicable  standard  of  conduct  shall  create a
presumption  that the indemnitee has not met the applicable  standard of conduct
or, in the case of such a suit

9






<PAGE>


                                                      -10-

brought by the indemnitee, be a defense of such suit. In any suit brought by the
indemnitee  to  enforce  a right  of  indemnification  or to an  advancement  of
expenses hereunder,  or by the corporation to recover an advancement of expenses
pursuant  to the  terms  of an  undertaking,  the  burden  of  proving  that the
indemnitee  is  not  entitled  to be  indemnified,  or to  such  advancement  of
expenses, under this section or otherwise shall be on the corporation.

         (C) The rights to  indemnification  and to the  advancement of expenses
conferred  in this  section  shall not be exclusive of any other right which any
person  may have or  hereafter  acquire  under any  statute,  the  corporation's
certificate  of  incorporation,  by  agreement,  by vote of  shareholders  or by
disinterested directors or otherwise. Any repeal or modification of this Section
7.10 shall not  adversely  affecting  any rights or  protection of an indemnitee
hereunder at the time of such repeal or modification.

         (D) The corporation may maintain insurance,  at its expense, to protect
itself  and any  director,  officer,  employee  or agent of the  corporation  or
another  corporation,  partnership,  joint  venture,  trust or other  enterprise
against any expense,  liability or loss,  whether or not the  corporation  would
have the power to indemnify such person against such expense,  liability or loss
under the Maine Code.

         Section 7.11 Invalid  Provisions.  If any  provision of these bylaws is
held to be illegal, invalid, or unenforceable under present or future laws, such
provision shall be fully severable; these bylaws shall be construed and enforced
as if such illegal,  invalid,  or unenforceable  provision had never comprised a
part hereof; and the remaining  provisions hereof shall remain in full force and
effect and shall not be  affected  by the  illegal,  invalid,  or  unenforceable
provision or by its severance  herefrom.  Furthermore,  in lieu of such illegal,
invalid, or unenforceable provision there shall be added automatically as a part
of these bylaws a provision  as similar in terms to such  illegal,  invalid,  or
unenforceable provision as may be possible and be legal, valid, and enforceable.

         Section  7.12  Headings.  The  headings  used in these  bylaws  are for
reference   purposes  only  and  do  not  affect  in  any  way  the  meaning  or
interpretation of these bylaws.

         The above  bylaws  were duly  adopted as the bylaws of the  corporation
effective as of the 18th day of June, 1997.





<PAGE>


                                                      -1-

                                  APPENDIX 5.7


            [FORM OF PROMEDCO AND HP ACQUISITION CORP. TAX REPRESENTATION
                                     LETTER]



                                                     _________ __, 1997


To the parties to the Agreement for Statutory  Mergers referred to herein (other
than the signatories  hereto) and the Shareholders  referred to in the Agreement
for Statutory Mergers

Ladies and Gentlemen:

         Pursuant to an Agreement  for Statutory  Mergers,  dated as of July 25,
1997,  (the  "Merger  Agreement")  made and entered  into by and among  ProMedCo
Management Company, a Delaware corporation  ("ProMedCo"),  Health Plans, Inc., a
Maine corporation ("HP"), PBMA Health Systems,  Inc., a Maine corporation and HP
Acquisition  Corp.,  a  Maine  corporation   ("Merger  Sub"),  each  Constituent
Corporation  will merge with and into Merger Sub in a transaction  in which each
share of Common Stock of the Constituent  Corporation will be converted into the
right to receive the Merger  Consideration  (the  "Mergers").  Unless  otherwise
indicated,  capitalized  terms not defined herein have the meanings set forth in
the Merger Agreement.

         ProMedCo and Merger Sub  represent  that the following  statements  are
true, correct, and complete:

1.       The  fair  market  value  of the  ProMedCo  stock  and  cash in lieu of
         fractional  shares  of  ProMedCo  stock  received  by each  Constituent
         Corporation shareholder will be approxi mately equal to the fair market
         value of the  Constituent  Corporation  stock  surrendered  in exchange
         therefor.

2.       The payment of cash to Constituent Corporation  shareholders in lieu of
         issuing  fractional  shares  of  ProMedCo  stock is solely to avoid the
         expense of issuing  fractional  shares and is not separately  bargained
         for consideration.

3.       None of the compensation, if any, received by any shareholder-employees
         of HP will be separate consideration for, or allocable to, any of their
         shares of HP stock; none of the

1






<PAGE>


                                                      -2-

         shares of ProMedCo stock received by any shareholder-employees  will be
         separate  consideration for, or allocable to, any employment agreement;
         and  the  compensation  paid to any  shareholder-employees  will be for
         services  actually rendered and will be commen surate with amounts paid
         to third parties bargaining at arm's-length for similar services.

4.   Following the Mergers, Merger Sub will hold at least 90 percent of the fair
     market value of the  Constituent  Corporations'  net assets and at least 70
     percent of the fair market  value of the  Constituent  Corporations'  gross
     assets held by the Constituent Corporations immediately prior to the Merger
     and  received  by   MergerSub   in  the  Mergers.   For  purposes  of  this
     representation,  amounts paid by the Constituent Corporations or Merger Sub
     to dissenters,  amounts paid by the Constituent  Corporations or Merger Sub
     to  shareholders  who receive cash or other  property in lieu of fractional
     shares of ProMedCo  stock or  otherwise,  amounts  used by the  Constituent
     Corporations  or  Merger  Sub  to  pay  reorganization  expenses,  and  all
     redemptions and distributions  (except for regular,  normal dividends) made
     by Constituent  Corporations  will be included as assets of the Constituent
     Corporations or Merger Sub, respectively, immediately prior to the Mergers.

5.       Following  the  Mergers,  Merger  Sub  will  continue  the  Constituent
         Corporations'  historic  business or use a  significant  portion of the
         Constituent Corporations' historic business assets in a business.

6.       ProMedCo  and Merger Sub will pay their  respective  expenses,  if any,
         incurred in connection with the Mergers.

7.       There is no intercorporate  indebtedness  existing between ProMedCo and
         either  Constitu  ent  Corporation  or  between  Merger  Sub and either
         Constituent  Corporation that was issued,  acquired, or will be settled
         at a discount.

8.       Prior to the Mergers,  ProMedCo will be in control of Merger Sub within
         the meaning of Section 368(c) of the Internal Revenue Code.

9.       ProMedCo has no plan or intention to reacquire any of its stock issued 
         in the transaction.

10.      ProMedCo has no plan or  intention  to  liquidate  Merger Sub; to merge
         Merger Sub with or into another corporation (except for the Merger); to
         sell or  otherwise  dispose  of the  stock of  Merger  Sub  except  for
         transfers of stock to corporations  controlled by ProMedCo; or to cause
         Merger Sub to sell or otherwise  dispose of any of its assets or of any
         of the assets  acquired from the Constituent  Corporations,  except for
         dispositions  made in the  ordinary  course of business or transfers of
         assets to a corporation controlled by Merger Sub.




<PAGE>


                                                      -3-

11.      ProMedCo  does not own,  nor has it owned  during the past five  years,
         directly  or indi  rectly,  any  shares  of the  stock of either of the
         Constituent Corporations.

12.      Neither ProMedCo nor Merger Sub is an investment  company as defined in
         Section 368(a)(2)(F)(iii) and (iv) of the Internal Revenue Code.

13.      No stock of Merger Sub will be issued in the Mergers.

14.      ProMedCo  has no  plan  or  intention  to  cause  Merger  Sub to  issue
         additional  stock that would  result in a  ProMedCo  losing  control of
         Merger Sub within the meaning of Section 368(c) of the Internal Revenue
         Code.


                                         PROMEDCO MANAGEMENT COMPANY


                                      By:
                                      Name:
                                     Title:


                                          HP ACQUISITION CORP.


                                        By:
                                      Name:
                                     Title:

3






<PAGE>


                                                      -1-

                                  APPENDIX 6.14

          [FORM OF CONSTITUENT CORPORATION TAX REPRESENTATION LETTER]
               [FORM OF MERGERSUB TAX REPRESENTATION LETTER WITH
              RESPECT TO PROMEDCO STOCK HELD AFTER THE HSI MERGER]

                                                     __________ __, 1997


To the parties to the Agreement for Statutory  Mergers referred to herein (other
than the signatory hereto) and the Shareholders referred to in the Agreement for
Statutory Mergers

Ladies and Gentlemen:

         Pursuant to an Agreement  for  Statutory  Merger,  dated as of July 25,
1997,  (the  "Merger  Agreement")  made and entered  into by and among  ProMedCo
Management Company, a Delaware corporation  ("ProMedCo"),  Health Plans, Inc., a
Maine corporation ("HP"), PBMA Health Systems,  Inc., a Maine corporation and HP
Acquisition Corp., a Maine corporation ("Merger Sub"), ___ [Acronym for relevant
Constituent Corporation] will merge with and into Merger Sub in a transaction in
which each share of __ Common Stock will be converted  into the right to receive
the Merger Consideration (the "Merger"). Unless otherwise indicated, capitalized
terms not defined herein have the meanings set forth in the Merger Agreement.

__ represents that the following statements are true, correct, and complete:

1.   The fair market value of the ProMedCo  stock and cash in lieu of fractional
     shares  of  ProMedCo  stock  received  by  each  __  shareholder   will  be
     approximately equal to the fair market value of the __ stock surrendered in
     exchange therefor.

2.   There is no plan or  intention by the  shareholders  of __ who own one (1%)
     percent or more of the  outstanding  __ stock at any time beginning on July
     25, 1997 and continuing through the date of the Merger to sell, exchange or
     otherwise  dispose (by short sale or otherwise) of ProMedCo shares received
     in the Merger,  and to the best of the  knowledge of the  management of __,
     there is no plan or intention on the part of the remaining  shareholders of
     __ to sell,  exchange,  or  otherwise  dispose  of a number  of  shares  of
     ProMedCo   stock   received  in  the  Merger  that  would   reduce  the  __
     shareholders'  owner ship of ProMedCo  stock to a number of shares having a
     value,  as of the  Effective  Time, of less than 50 percent of the value of
     all of the  formerly  outstanding  stock  of __ as of the  same  date.  For
     purposes of this  representation,  shares of __ stock exchanged for cash or
     other property,  surrendered by dissenters or exchanged for cash in lieu of
     fractional

1






<PAGE>


                                                      -2-

         shares of ProMedCo stock will be treated as outstanding __ stock on the
         date of the Merger. Moreover, shares of __ stock and shares of ProMedCo
         stock held by __ shareholders and otherwise sold, redeemed, or disposed
         of prior or  subsequent to the Merger will be considered in making this
         representation.

3.   Following the Merger,  Merger Sub will hold at least 90 percent of the fair
     market  value of __'s net assets and at least 70 percent of the fair market
     value of __'s  gross  assets  held  immediately  prior to the  Merger.  For
     purposes  of  this  representation,  amounts  paid by __ or  Merger  Sub to
     dissenters,  amounts paid by __ or Merger Sub to  shareholders  who receive
     cash or other  property in lieu of fractional  shares of ProMedCo  stock or
     other  wise,  amounts  used  by __ or  Merger  Sub  to  pay  reorganization
     expenses,  and all redemp  tions and  distributions  (except  for  regular,
     normal  dividends)  made by __ will be  included  as assets of __ or Merger
     Sub, respectively, immediately prior to the Merger.

4.   ____ and the shareholders of __ will pay their respective expenses, if any,
     incurred in connection with the Merger.

5.       There is no intercorporate  indebtedness  existing between ProMedCo and
         __ or between Merger Sub and __ that was issued,  acquired,  or will be
         settled at a discount.

6.       At the time of the Merger,  __ will not have  outstanding any warrants,
         options,  convert ible securities,  or any other type of right pursuant
         to which any person  could  acquire  stock in __ that,  if exercised or
         converted,  would affect ProMedCo's acquisition or retention of control
         of __, as defined in Section 368(c) of the Internal Revenue Code.

7.       On the date of the Merger,  the fair  market  value of the assets of __
         will exceed the sum of its liabilities, plus the amount of liabilities,
         if any, to which the assets are subject.

8.       The  liabilities  of __ assumed by Merger  Sub and the  liabilities  to
         which the  transferred  assets of __ are subject were incurred by __ in
         the ordinary course of its business.

9.       __ is not an investment company as defined in Section 368(a)(2)(F)(iii)
         and (iv) of the Internal Revenue Code.





<PAGE>


                                                      -3-

10.      __ is not under the  jurisdiction  of a court in a title 11 or  similar
         case within the meaning of Section 368(a)(3)(A) of the Internal Revenue
         Code.

                                                     [CONSTITUENT CORPORATION ]


                                                     By:
                                      Name:
                                     Title:


3






<PAGE>


                                                      -1-





                                  APPENDIX 7.2
                         OPINION OF COUNSEL TO PROMEDCO


     The  Closing  opinion of Boult,  Cummings,  Conners & Berry,  PLC,  special
counsel  to  ProMedCo  and  MergerSub  which  is  called  for by ss.  7.2 of the
Agreement, shall be dated the Closing Date and shall be to the following effect:

             [Letterhead of Boult, Cummings, Conners & Berry, PLC]1



                                           [Closing Date]


PBMA Health Systems, Inc.
Health Plans, Inc.
[Address]

Ladies and Gentlemen:

         We  have  acted  as  counsel  to HP  Acquisition  Corporation,  a Maine
corporation   ("MergerSub"),   and  ProMedCo   Management  Company,  a  Delaware
corporation ("ProMedCo") in connection with the preparation of the Agreement for
Statutory  Mergers dated as of July 25, 1997 (the  "Acquisition  Agreement") and
have  participated  on behalf of MergerSub and ProMedCo in  connection  with the
merger of PBMA Health Systems,  Inc. ("HSI") and Health Plans,  Inc. ("HP") with
and into  MergerSub.  This  Opinion  Letter is provided to you at the request of
ProMedCo  pursuant  to  Section  7.2 of the  Acquisition  Agreement.  Except  as
otherwise  indicated  herein,  capitalized terms used in this Opinion Letter are
defined as set forth in the Acquisition Agreement or the Accord (see below).

         This  Opinion  Letter  is  governed  by,  and shall be  interpreted  in
accordance  with,  the Legal Opinion Accord (the "Accord") of the ABA Section of
Business  Law  (1991).  As  a  consequence,   it  is  subject  to  a  number  of
qualifications,  exceptions,  definitions,  limitations  on  coverage  and other
limitations,  all as more particularly described in the Accord, and this Opinion
Letter should be read in conjunction  therewith.  The attorneys in this firm are
licensed to practice  law in the State of  Tennessee  and  consequently  the law
covered by the opinions expressed herein
- --------
1Draft only; subject to internal firm review.

1






<PAGE>


                                                      -2-

is limited to the Federal Law of the United  States,  the  corporate  law of the
States of Delaware and Maine and in reliance on public  documents  issued by the
States of Delaware  and Maine and  certificates  of  officers  of  ProMedCo  and
MergerSub.

         We have  relied  upon  factual  representations  made by  MergerSub  in
Article 3 of the Acquisition Agreement.

         Based upon the  foregoing and subject to the  foregoing,  we are of the
opinion that:

         1.       The Agreement is enforceable against ProMedCo and MergerSub.

         2. The ProMedCo Stock has been duly  authorized,  validly issued and is
non-assessable.

         3. Execution and delivery by ProMedCo and MergerSub of, and performance
of their  agreements  in,  the  Agreement  do not (i)  violate  the  Constituent
Documents, (ii) breach, or result in a default under, any existing obligation of
MergerSub or ProMedCo under contracts dealing with money borrowed by either such
corporation  known to us, or (iii)  breach or  otherwise  violate  any  existing
obligation of MergerSub or ProMedCo  under Court Orders  identified in Article 4
of the Acquisition Agreement and the Schedules pertaining thereto.

         4. Execution and delivery by MergerSub and ProMedCo of, and performance
by each such  corporation  of its  agreements  in, the  Agreement do not violate
applicable provisions of statutory law or regulation.

         The General Qualifications apply to the opinions set forth above.

         This Opinion  Letter may be relied upon by you only in connection  with
the  transaction  and may not be used or relied upon by you or any other  person
for any  purpose  whatsoever,  except to the extent  authorized  in the  Accord,
without in each instance, our prior written consent.

                                    Very truly yours,

                                    BOULT, CUMMINGS, CONNERS & BERRY, PLC






<PAGE>


                                                      -1-





                                  APPENDIX 8.3
               OPINION OF COUNSEL TO THE CONSTITUENT CORPORATIONS

     The Closing  opinion of Messrs.  Ropes & Gray,  counsel to the  Constituent
Corporations which is called for by ss. 8.3 of the Agreement, shall be dated the
Closing Date and shall be to the effect that:

                         [FORM OF ROPES & GRAY OPINION]
                                 ______ __, 1997


ProMedCo Management Company
801 Cherry Street, Suite 1450
Fort Worth, Texas 76102

HP Acquisition Corporation
[Address]


Ladies and Gentlemen:

         This  opinion is being  furnished to you pursuant to Section 8.3 of the
Agreement  for  Statutory  Mergers  dated as of _________  __, 1997 (the "Merger
Agreement")  among each of you,  Health Plans,  Inc., a Maine  corporation  (the
"Company"),  and PBMA Health Systems,  Inc., a Maine corporation,  in connection
with the closing held this day under the Merger Agreement.  Terms defined in the
Merger  Agreement  and not  otherwise  defined  herein are used  herein with the
meanings so defined.

         We have acted as counsel for the Company in connection  with the Merger
Agreement  and the  transactions  contemplated  thereby and as such are familiar
with the  proceedings  taken  by the  Company  in  connection  with  the  Merger
Agreement. While we have examined and relied on such certificates, documents and
records,  and have made such  examination of law, as we have deemed necessary to
enable us to render the opinions  expressed  below,  we have not for purposes of
rendering such opinions undertaken a general factual or legal investigation into
the business and affairs of the Company.

         We have  participated  in the  preparation of the Merger  Agreement and
have examined counterparts, executed by the Company, of the Merger Agreement. We
have  examined  and relied as to matters of fact (other than facts  constituting
conclusions of law) upon the representations and

1






<PAGE>


                                                      -2-

warranties of the Company set forth in the Merger  Agreement and in certificates
of the Company delivered in connection  therewith and herewith.  We have assumed
in rendering  our  opinions  expressed in paragraph 1 below that each of you, as
the case may be,  have all  requisite  power and  authority  and have  taken all
necessary  action to execute and deliver the Merger  Agreement and to effect the
transactions  contemplated  thereby.  For  purposes  of  rendering  the  opinion
expressed  in  paragraph  5 below,  we have  assumed  your  satisfaction  of the
statutorily  prescribed  conditions  to  merger,  including  without  limitation
approval of the merger by the Maine Bureau of Insurance.

         The  opinions  expressed  below are limited to matters  governed by the
laws of The  Commonwealth  of  Massachusetts  and the federal laws of the United
States.  We call your attention to the fact that the Merger  Agreement  provides
that it is to be governed by and construed in accordance  with the internal laws
of the State of Maine. For purposes of rendering the opinions  expressed herein,
we have assumed that the Merger Agreement  provides that it is to be governed by
and  construed in  accordance  with the  internal  laws of The  Commonwealth  of
Massachusetts.  We also  express no opinion as to state  securities  or blue sky
laws.

         Based on and subject to the foregoing, we are of the opinion that:

         1. The Company is a corporation duly  incorporated and validly existing
under the laws of The State of Maine and is in good  standing with the Office of
the Secretary of State of The State of Maine.  The Company has corporate  powers
adequate  (i) to enter into,  execute and  deliver the Merger  Agreement  and to
consummate the  transactions  contemplated  thereby and (ii) to own or lease its
properties and carry on its business as now conducted by it. The Company is duly
qualified to do business as a foreign corporation in __________ and _________.

         2 . The  Merger  Agreement  has  been  duly  authorized,  executed  and
delivered by the Company,  and is (subject to the  qualifications  stated in the
penultimate  paragraph  hereof) a legal,  valid and  binding  obligation  of the
Company, enforceable against the Company in accordance with its terms.

         3. The  authorized  capital  stock of the  Company  on the date  hereof
consists of: (i) 1,000,000  shares of Voting  Common  Stock,  par value $.01 per
share, of which  __________  shares are issued and  outstanding;  (ii) 1,000,000
shares of Nonvoting Common Stock, par value $.01 per share, of which ____ shares
are issued and  outstanding;  and (iii) 200,000 shares of Nonvoting  Convertible
Preferred Stock, par value $15.00 per share, of which as of the date hereof zero
(0) shares are issued and  outstanding  (collectively,  the Voting Common Stock,
Nonvoting Common Stock and Nonvoting  Convertible Preferred Stock of the Company
are referred to herein as the "Company Capital Stock").  The outstanding  shares
of the Company Capital Stock have been duly  authorized and validly issued,  and
are fully paid and nonassessable.

         4. Under existing  provisions of law, no approval of, or  authorization
or other action by, or filing with, any federal or Maine governmental  authority
is required to be obtained or made by the




<PAGE>


                                                      -3-

Company in connection with the execution,  delivery or performance of the Merger
Agreement,  except for (a) the filing of the  Articles  of Merger of the Company
into HP Acquisition  Corporation and other appropriate merger documents, if any,
as  required  by the  laws  of The  State  of  Maine  and  (b)  such  approvals,
authorizations or filings as have been obtained or made.

         5. The execution and delivery of the Merger Agreement by the Company do
not, and the  performance  by the Company of the terms thereof  applicable to it
will not, result in any violation by it of, or be in conflict with, constitute a
default under or result in the creation of a lien or right of  termination  as a
result of a change of ownership or control  under,  any term or provision of (a)
the Articles of Incorporation or the By-laws of the Company,  or (b) any federal
or Maine law,  statute or  governmental  regulation  (other  than any federal or
state securities laws).

         6. To the best of our  knowledge,  except  as set  forth on  Exhibit  A
hereto or Exhibit __ to the Merger  Agreement,  after having made due inquiry of
the Company but without having  investigated any  governmental  records or court
dockets other than those referred to below,  there is no governmental  action or
proceeding  and no litigation  pending or  threatened  against the Company which
seeks to prevent or enjoin  performance of or places in question the validity or
enforceability of the Merger Agreement.

         In connection with our opinion  expressed in paragraph 6 above, we have
caused  the  docket  of the U.S.  District  Court for the  District  of Maine in
___________ and the Superior  Courts for Kennebec and Cumberland  Counties to be
searched  through  _____ __, 1997 for the prior _____ year period for the filing
of any action that names the Company as a defendant.

         Our opinion  that the Merger  Agreement  is a legal,  valid and binding
obligation of the Company enforceable against the Company in accordance with its
respective  terms is  subject  to (i)  bankruptcy,  insolvency,  reorganization,
moratorium  and other  laws of  general  application  affecting  the  rights and
remedies of creditors and secured parties generally and (ii) general  principles
of equity,  regardless of whether enforcement is sought in proceedings in equity
or at law.  Such  opinions are also subject to the  qualifications  that (i) the
enforceability   of  the   provisions   of  the   Merger   Agreement   providing
indemnification  may be  affected  by  public  policy  considerations  or  court
decisions  which  may  limit  the  right  of the  indemnified  party  to  obtain
indemnification  involving such party's fault; and (ii) we express no opinion as
to the  enforceability  of the  provisions of the Merger  Agreement  waiving the
right to a jury trial.

         The foregoing  opinion is solely for your benefit and may not be relied
on by any other person.

                                                     Very truly yours,






<PAGE>


                                                      -4-


                                  APPENDIX 8.6
                FORM OF STOCKHOLDER AND INDEMNIFICATION AGREEMENT

                           PROMEDCO MANAGEMENT COMPANY

                       STOCK AND INDEMNIFICATION AGREEMENT


         STOCK AND  INDEMNIFICATION  AGREEMENT (the  "Agreement")  is made as of
this __th day of ____,  1997  between the person  whose  signature  and name are
affixed  to the foot of this  Agreement  as  "Stockholder"  ("Stockholder")  and
ProMedCo Management Company, a Delaware corporation, ("ProMedCo").

RECITALS:

         PBMA Health Systems,  Inc. ("HSI") and Health Plans, Inc. ("HP"),  both
Maine corporations  (collectively the "Constituent  Corporations")  have entered
into a Agreement  for  Statutory  Merger  dated as of July 25, 1997 (the "Merger
Agreement") with ProMedCo and HP Acquisition  Corporation,  a Maine  corporation
("MergerSub")  which is a wholly owned  subsidiary of ProMedCo.  Pursuant to the
Merger Agreement Stockholder,  as a former shareholder of one of the Constituent
Corporations,  has received or will receive  certain  shares of ProMedCo  common
stock  (such  shares,  as adjusted  in  accordance  with the terms of the Merger
Agreement,  herein referred to as the "Shares").  All capitalized  terms used in
this Agreement not otherwise  defined herein shall have the meanings as assigned
to them in the Merger Agreement.

         The parties agree as follows:

                                    ARTICLE 1

               REPRESENTATIONS AND ACKNOWLEDGMENTS BY STOCKHOLDER

         1.1.   Experience  in  Business  and  Financial  Matters.   Stockholder
represents  and warrants that  Stockholder  has such knowledge and experience in
business and financial  matters,  or competent  professional  advice  concerning
ProMedCo,  that  Stockholder  is capable of  evaluating  the merits and risks of
owning the Shares.

         1.2.  Information  regarding  ProMedCo.  Stockholder  acknowledges that
Stockholder  has had and  continues  to have  the  opportunity  to  obtain  from
ProMedCo any  additional  information,  to the extent  possessed  or  obtainable
without  unreasonable  effort and expense,  necessary to evaluate the merits and
risks  of  owning  the  Shares  and  Stockholder  has  concluded,  based  on the
information presented to Stockholder,  including without limitation a Prospectus
dated March 12, 1997  relating to ProMedCo's  recent  public  offering of Common
Stock, Stockholder's own understanding of


<PAGE>


                                                      -5-

investments of this nature and of this investment in particular,  and the advice
of such  consultants as Stockholder  has deemed  appropriate,  that  Stockholder
wishes to own the Shares.

         1.3. Unregistered Stock. Stockholder acknowledges that the Shares being
acquired have not been registered under the Securities Act of 1933, or under the
Blue Sky or other  securities  laws of  certain  states,  and,  therefore,  that
Stockholder  must bear the economic  risk of the  investment  for an  indefinite
period of time,  as the  Shares  cannot be sold or offered  for sale  unless the
Shares are  subsequently  so registered  or an exemption  from  registration  is
available.  Stockholder  also understands that there is no market for the resale
of the Shares and that there is no certainty that a market will develop.

         1.4.  Securities  Legend.  Stockholder  understands  that any  document
evidencing  the  Shares  will bear a  restrictive  legend in  substantially  the
following form:

         "THE SHARES  REPRESENTED BY THIS  CERTIFICATE  HAVE NOT BEEN REGISTERED
         UNDER THE SECURITIES ACT OF 1933, AS AMENDED,  OR ANY APPLICABLE  STATE
         SECURITIES LAWS, AND MAY NOT BE OFFERED, SOLD OR OTHERWISE TRANSFERRED,
         PLEDGED OR  HYPOTHECATED  UNLESS AND UNTIL SUCH  SHARES ARE  REGISTERED
         UNDER  SUCH ACT,  OR SUCH  STATE  LAWS,  OR AN  OPINION  OF  COUNSEL IS
         FURNISHED  TO THE COMPANY  (WHICH  OPINION AND COUNSEL  RENDERING  SAME
         SHALL BE  REASONABLY  SATISFACTORY  TO THE  COMPANY) TO THE EFFECT THAT
         SUCH REGISTRATION IS NOT REQUIRED."

         Stockholder also understands that the records of ProMedCo will indicate
the restrictions on transferability and sale noted above in this Section 1.4 and
stop  transfer  instructions  have been or will be placed  with  respect  to the
Shares so as to restrict the transfer thereof. Stockholder agrees not to dispose
of any of the Shares unless ProMedCo  receives an opinion of counsel  acceptable
to it that the Shares can be transferred  without  violation of the registration
requirements  of the  Securities  Act  and  the  rules  and  regulations  of the
Securities and Exchange Commission,  and any applicable state securities laws or
regulations,  or ProMedCo receives  evidence  satisfactory to it that the Shares
have been validly  registered  under the Securities Act and any applicable state
securities laws.  Notwithstanding the foregoing,  ProMedCo shall not approve any
transfer  of shares  that is  inconsistent  with the  intent of the  parties  to
qualify the transaction as a tax-free  reorganization as set forth in ss. 2.1 of
the Merger Agreement.

         1.5. Investment Intent.  Stockholder is acquiring the Shares solely for
investment  for his or her own account;  Stockholder  has no present  agreement,
understanding,  intent or arrangement to subdivide, sell, assign or transfer any
part  or all of his  Shares,  or any  interest  therein,  to any  other  person.
Stockholder  has sufficient and adequate means to provide for his or her current
needs and personal  contingencies  and has no need for liquidity with respect to
an investment in ProMedCo.

5




<PAGE>


                                                      -6-

         1.6. ProMedCo's Limited Operating History.  Stockholder is aware of and
understands that ProMedCo has been in operation for  approximately one year, and
has a limited financial or operating history and that the Shares are speculative
investments  which involve a risk of loss by him of his investment.  Stockholder
understands ProMedCo's future operations are subject to many significant risks.

         1.7. No Representations  Regarding Future Profits.  Stockholder has not
relied on any representation by any person, whether such representation was made
directly or  indirectly,  regarding the amount,  percentage or type of profit or
loss to be  realized,  if any,  from an  investment  in the Shares.  Stockholder
further  acknowledges  that the prior experience of ProMedCo or any other person
is not in any way a prediction of the results which  Stockholder may obtain as a
result of his investment in the Shares.

                                   ARTICLE 22

                                 INDEMNIFICATION

         2.1 Grant of Indemnity.  Subject to the  limitations  set forth in this
Section  2.1,  Stockholder  agrees,  on a several  basis,  and not  jointly  and
severally, with all other Stockholders,  to indemnify,  defend and hold ProMedCo
and MergerSub and their  Affiliates  and its and their  respective  officers and
directors,   harmless  from  and  against  any  claims,   losses,   liabilities,
obligations,  lawsuits,  deficiencies,  damages or expenses of whatever  nature,
whether known or unknown, accrued, absolute,  contingent or otherwise (including
(without limitation) interest, penalties, reasonable attorneys' fees, reasonable
costs of investigation incurred by ProMedCo and MergerSub in connection with any
demand, action, suit, proceeding,  assessment or judgment incident to any of the
foregoing)  and all  amounts  paid in defense or  settlement  of the  foregoing,
suffered or incurred by ProMedCo or MergerSub  (singularly,  a "ProMedCo  Loss";
collectively,  "ProMedCo  Losses") as a result of the  occurrence  of any of the
following: (i) a breach of any obligation, representation, warranty, covenant or
agreement  made by HP in the Merger  Agreement  or any  agreement  furnished  or
required  to be  furnished  pursuant  to the Merger  Agreement  or  because  any
representation  or  warranty by HP  contained  in the Merger  Agreement,  in any
document  furnished or required to be furnished pursuant to this Agreement by HP
to ProMedCo  or  MergerSub  or any of their  representatives,  or any  documents
furnished to ProMedCo and  MergerSub in connection  with the Closing  hereunder,
shall be false.

         2.2 Limitation on Liability. The Stockholder and the other Stockholders
shall be severally (and not jointly and severally) liable under this Section 2.1
in respect of ProMedCo  Losses only to the extent the aggregate of such ProMedCo
Losses exceeds  $250,000,  in which case, such Stockholder shall be liable under
this Section 2.1 for the amount of such  ProMedCo  Losses in excess of $250,000,
allocated to such Stockholder, up to a maximum aggregate amount of 50% of the
- --------
         2This Article except for Sections 2.6, 2.7 and 2.8 will be omitted from
the Agreement to be signed by the former HSI shareholders.


<PAGE>


                                                      -7-

Consideration   (as  defined  in  the  Merger   Agreement)   allocated  to  such
Stockholder.  All payments to ProMedCo or MergerSub pursuant to this Section 2.1
in each case shall be net of (i) income tax benefits to ProMedCo or MergerSub to
the extent  realized by such Person in the tax year in which the ProMedCo Losses
occurred, and (ii) insurance proceeds, if any when actually received by ProMedCo
or MergerSub,  provided,  however,  that ProMedCo or MergerSub  shall retain the
right in its sole  discretion  to  determine  whether to pursue  such claims by,
through or against an insurer or to bring such  claims  directly  or  indirectly
against the Stockholder pursuant to this Section 2.1

         2.3      Representation, Cooperation and Settlement.

(a)  ProMedCo  and  MergerSub  shall  give  prompt  notice  to  the  Shareholder
     Representative  of any claim against ProMedCo or MergerSub which might give
     rise to a claim based on the indemnity contained in this Article 2, stating
     the nature and basis of the claim and the amount thereof.

(b)  In the event any claim,  action,  suit or  proceeding  is  brought  against
     ProMedCo or MergerSub  with respect to which one or more  Shareholders  may
     have  liability  under the indemnity  contained in this Article 2, ProMedCo
     and MergerSub  shall permit the  Shareholder  Representative  to assume the
     defense  of any such claim or any  litigation  resulting  from such  claim,
     provided that  ProMedCo and  MergerSub  shall not be required to permit the
     Shareholder  Representative  to assume the defense of any third party claim
     which if not first  paid,  discharged,  or  otherwise  complied  with would
     result in an  interruption  or  cessation  of the  conduct  of  MergerSub's
     business  or  any  material  part  thereof.   Failure  by  the  Shareholder
     Representative  to notify  ProMedCo and MergerSub of its election to defend
     any such claim or action by a third  party  within  thirty  (30) days after
     notice  thereof shall have been given by ProMedCo and  MergerSub,  shall be
     deemed a waiver of any such  election.  If the  Shareholder  Representative
     assumes the defense of such claim or litigation  resulting  therefrom,  the
     obligations of the  Shareholder  Representative  hereunder as to such claim
     shall  include  taking all steps  reasonably  necessary  in the  defense or
     settlement  of  such  claim  or  litigation  resulting  in the  defense  or
     settlement of such claim or litigation resulting  therefrom,  including the
     retention of counsel  satisfactory  to ProMedCo and MergerSub,  and holding
     ProMedCo  and  MergerSub  harmless  from  and  against  any and all  damage
     resulting from,  arising out of, or incurred with respect to any settlement
     approved by the  Shareholder  Representative  or any judgment in connection
     with  such  claim  or  litigation  resulting  therefrom.   The  Shareholder
     Representative  shall not,  in the  defense  of such  claim or  litigation,
     consent to the entry of any judgment (other than a judgment of dismissal on
     the merits with costs)  except  with the  written  consent of ProMedCo  and
     MergerSub nor enter into any settlement (except with the written consent of
     ProMedCo and  MergerSub)  which does not include as an  unconditional  term
     thereof the giving by the claimant or the

7




<PAGE>


                                                      -8-

                  plaintiff  to  ProMedCo  and  MergerSub  a  release  from  all
                  liability in respect to such claim or litigation.

(c)  If the Shareholder  Representative shall not assume the defense of any such
     claim by a third party or  litigation  resulting  therefrom,  ProMedCo  and
     MergerSub may defend  against such claim or litigation in such manner as it
     deems appropriate. The Shareholder Representative shall, in accordance with
     the provisions  hereof,  promptly  reimburse ProMedCo and MergerSub for the
     amount of any settlement  reasonably entered into by ProMedCo and MergerSub
     and for all damage  incurred by ProMedCo and MergerSub in  connection  with
     the defense against or settlement of such claim or litigation.

         2.4.  Exclusive Remedy.  This Section 2.4 shall provide  ProMedCo's and
MergerSub's  sole and exclusive  remedy against the Stockholders for any and all
ProMedCo  Losses  sustained  or  incurred  by  ProMedCo,   MergerSub  and  their
Affiliates  and its and  their  respective  officers  and  directors,  and their
respective successors and assigns.

         2.5. Right to Tender Stock.  Each  Stockholder  shall have the right to
satisfy its  obligations  to pay the amount of any ProMedCo Loss by tendering to
ProMedCo for cancellation such number of shares of ProMedCo common stock,  based
on the Deemed Value of the ProMedCo  common stock (as defined  below),  equal to
the amount of such ProMedCo Loss;  provided that this right shall exist only if,
after taking into account such tender of ProMedCo  common  stock,  together with
any cash payments  contemporaneously  made by the  Stockholder,  the Stockholder
satisfies in full of his  obligations to pay when du the amount of such ProMedCo
Loss.  For purposes of this  Section  2.5,  the Deemed Value of ProMedCo  common
stock shall be $8.80 per share.

         2.6.     Release. The Stockholder agrees to execute at the time of 
execution of this Agreement a general release in the form attached hereto as 
Exhibit A.

         2.7. Tax Loss Indemnification.  Stockholder agrees to indemnify, defend
and hold ProMedCo and MergerSub and their Affiliates and all other  Stockholders
(the "Tax Indemnified  Parties")  harmless from and against any Tax or Taxes (as
such terms are defined in the Merger Agreement)  (including (without limitation)
interest,   penalties,   reasonable   attorneys'   fees,   reasonable  costs  of
investigation  incurred by the Tax  indemnified  Parties in connection  with any
demand, action, suit, proceeding,  assessment or judgment incident to any Tax or
Taxes) and all mounts paid in defense or settlement of the  foregoing,  suffered
or  incurred  by any of  the  Indemnified  Parties  (singularly,  a "Tax  Loss";
collectively,  "Tax  Losses")  as a  result  of the  breach  of any  obligation,
covenant  or  agreement  made by  Stockholder  in the Merger  Agreement  or this
Agreement  or  because  any   certification,   representation   or  warranty  by
Stockholder  contained  in  the  Merger  Agreement,  this  Agreement  or in  any
certificate  or  other  document  furnished  or  required  to  be  furnished  by
Stockholder pursuant to the Merger Agreement or this Agreement shall be false.



<PAGE>


                                                      -9-

         2.8.  Third Party  Beneficiaries.  The parties  hereto agree that,  for
purposes of Section 2.7, all other Stockholders of the Constituent  Corporations
shall be third party beneficiaries of this Agreement.


                                    ARTICLE 3

                                     NOTICES

         All  notices,  demands and other  communications  required or permitted
hereunder  shall be made in writing and be deemed  communicated on the date when
delivered  in person or when  delivered,  if mailed by certified  mail,  postage
prepaid,  sent to the address set forth at the foot of this Agreement or to such
other address as either  Stockholder  or ProMedCo may designate by notice to the
other.

                                    ARTICLE 4
                                  MISCELLANEOUS

         4.1 Entire Agreement.  This Agreement  constitutes the entire agreement
between  the  parties  hereto  pertaining  to  the  subject  matter  hereof  and
supersedes   all   prior   and   contemporaneous   agreements,   understandings,
negotiations and discussions, whether written or oral, of the parties, and there
are no  representations,  warranties or other agreements  between the parties in
connection  with the subject matter  hereof,  except as  specifically  set forth
herein.

         4.2      Governing Law.  The validity and construction of this 
Agreement shall be governed by the laws of the State of Delaware.

         4.3      Section Headings.  The section headings are for reference only
and shall not limit or control the meaning of any provision of this Agreement.

         4.4 Waiver.  No delay or  omission  on the part of any party  hereto in
exercising  any right  hereunder  shall operate as a waiver of such right or any
other right under this Agreement.

         4.5 Successors and Assigns.  This Agreement  shall inure to the benefit
of and bind the respective successors and assigns of the parties hereto.

         4.6  Amendments.  This  Agreement may be amended,  but only in writing,
signed by the parties hereto.

         4.7  Counterparts.  This  Agreement  may be  executed  in any number of
counterparts,  each of which  shall be an  original,  but all of which  together
shall comprise one and the same instrument.

9




<PAGE>


                                                      -10-

         4.8  Severability.  Each  section  and  subsection  of  this  Agreement
constitutes  a separate  and distinct  undertaking,  covenant  and/or  provision
hereof. Whenever possible, each provision of this Agreement shall be interpreted
in such manner as to be effective and valid under  applicable  law. In the event
that any provision of this Agreement  shall finally be determined by a competent
court or  tribunal  to be unlawful or  unenforceable,  such  provision  shall be
deemed severed from this Agreement,  but every other provision of this Agreement
shall  remain  in full  force  and  effect,  and in  substitution  for any  such
provision held unlawful or unenforceable, there shall be substituted a provision
of similar import  reflecting  the original  intent of the parties hereto to the
extent permissible under law.

         4.9  Termination.  Except for the  provisions  of  Section  1.4 of this
Agreement,  which the parties hereto agree shall survive the termination of this
Agreement  and  for so long  as the  Stockholder  shall  own  any  Shares,  this
Agreement shall terminate upon the first to occur of (i) a successful completion
of a Qualified  Public  Offering  by  ProMedCo  or (ii) upon the mutual  written
agreement of the parties hereto.

         4.10  Arbitration.  Any controversy or claim arising out of or relating
to this Agreement or the breach  thereof will be settled by binding  arbitration
in  accordance  with  the  rules  of  commercial  arbitration  of  the  American
Arbitration   Association,   and  judgment  upon  the  award   rendered  by  the
arbitrator(s)  may be entered in any court  having  jurisdiction  thereof.  Such
arbitration shall occur within the County of Tarrant, State of Texas, unless the
parties  mutually  agree to have such  proceedings  in some  other  locale.  The
arbitrator(s)  may in any such proceeding award attorneys' fees and costs to the
prevailing party.

         IN  WITNESS  WHEREOF,  the  parties  hereto  have  duly  executed  this
Agreement as of the day and year first above written.

ProMedCo Notice Address:                             PROMEDCO MANAGEMENT COMPANY
ProMedCo Management Company
801 Cherry Street
Suite 1450                                           By:
Fort Worth, TX 76102
Attention: Chief Executive Officer

Stockholder Address:                                 STOCKHOLDER:




                                  Printed Name



<PAGE>


                                                      -1-

                                    EXHIBIT A

                                 GENERAL RELEASE


         KNOW ALL  PERSONS  BY THESE  PRESENTS  that,  in  consideration  of the
covenants,  warranties and representations to, and of the further  consideration
set forth in, the Agreement  for Statutory  Merger dated as of July 25, 1997, by
and among ProMedCo Management Company ("ProMedCo"), HP Acquisition Corp., Health
Plans,  Inc. and PBMA Health  Systems,  Inc.  and the Stock and  Indemnification
Agreement dated as of _______ __, 1997, by and among the undersigned Stockholder
and  ProMedCo  (collectively,   the  "ProMedCo  Agreements"),  the  receipt  and
sufficiency of which are hereby  acknowledged,  the undersigned  Stockholder and
his  or  its  predecessors,   successors,   corporate   parents,   subsidiaries,
affiliates,  present  or former  trustees,  stockholders,  directors,  officers,
attorneys,  agents,  employees,  heirs,  executors,  administrators  and assigns
(hereinafter  collectively referred to as the "Releasors") do hereby release and
forever  discharge  Health Plans,  Inc., PBMA Health Systems,  Inc.,  present or
former  stockholders  of each,  and their  predecessors,  successors,  corporate
parents,  subsidiaries,  affiliates,  present  or  former  trustees,  directors,
officers,  attorneys, agents and employees (hereinafter collectively referred to
as the "Releasees"), and each of the aforesaid, from all claims, actions, causes
of  action,  suits,  contracts,  controversies,   agreements,   representations,
warranties and liabilities  whatsoever,  both in law and equity,  which they now
have or ever had from the  beginning  of time to the date of  execution  of this
Agreement, against the Releasees,  including, without limiting the generality of
the  foregoing,  of and from any and all  matters  which were or could have been
complained of in the lawsuit entitled PBMA Health Systems,  Inc., Johan Brouwer,
M.D., Onni C. Kangas,  M.D., Peter Shrier, M.D., Corwin Olds, M.D. and Donald J.
Weaver,  M.D. v. David L. Hall, M.D., Paul Barresi,  M.D.,  Charles Gluck, M.D.,
John Wickenden,  M.D., Gordon Paine, M.D. and Carol Brewer,  Cumberland Superior
Court,   Civil  Action  No.   CV-97-271,   except  for  such   obligations   and
responsibilities  of the  Releasees  as  arise  from the  terms of the  ProMedCo
Agreements.  This  General  Release  shall  be  governed  by  and  construed  in
accordance with the laws of the State of Maine.

         IN WITNESS WHEREOF,  I have hereunto set my hand this ___ day of _____,
1997.



                                                     -------------------------
                                      Name:




1




<PAGE>


                                                      -2-

         Then personally appeared before me __________________,  who is known to
me and who acknowledged to me that (s)he fully read and understood the foregoing
General  Release and that his (her) signing of the General  Release is his (her)
free act and deed and who in my presence signed the foregoing General Release on
________, 1997.

                                   Before me,



                                  Notary Public
                             My Commission expires:









<PAGE>


                                                      -1-

                                  APPENDIX 8.7

        CONTINUITY OF INTEREST CERTIFICATE FOR CONSTITUENT CORPORATION
                                  SHAREHOLDERS

To the parties to the Agreement for Statutory Mergers referred to herein and the
Shareholders  (other than the the signatory hereto) referred to in the Agreement
for Statutory Mergers

         The  undersigned  is aware that  pursuant to an Agreement for Statutory
Merger,  dated as of July 25, 1997,  (the "Merger  Agreement")  made and entered
into  by  and  among  ProMedCo  Management   Company,  a  Delaware   corporation
("ProMedCo"),  HP Acquisition Corp., a Maine corporation ("Merger Sub"), and the
Constituent Corporations,  each Constituent Corporation will merge with and into
Merger  Sub in a  transaction  in which each  share of  Constituent  Corporation
Common  Stock  will  be  converted  into  the  right  to  receive  the HSI or HP
Consideration (the "Merger"). Unless otherwise indicated,  capitalized terms not
defined herein have the meanings set forth in the Merger Agreement.

         The undersigned hereby represents and warrants to ProMedCo,  Merger Sub
and the  shareholders  of the  Constituent  Corporation in which the undersigned
owns stock that:

(a)  The undersigned  has, and as of the Effective Time of the Merger will have,
     no  plan  or  intention  to  sell,  give,  pledge,  hypothecate,  exchange,
     distribute,  otherwise  dispose of, or reduce the risk of  ownership  of or
     transfer (by short sale or otherwise)  (collectively,  a "Transfer") any of
     the ProMedCo stock received in the Merger.  Shares of HP stock, if any, and
     shares of ProMedCo stock  (including  shares of HP stock, if any,  acquired
     pursuant to the exercise,  at or prior to the Effective Time, of options to
     acquire  HP  stock)  held  by HP  shareholders  and  Transferred  prior  or
     subsequent to the Merger will be considered in making this representation.

(b)  The undersigned is not aware of or participating in any plan on the part of
     the  shareholders of the  Constituent  Corporation in which the undersigned
     holds stock to Transfer ProMedCo stock received in the Merger.

(c)  The undersigned will pay its expenses, if any, incurred in the Merger.

(d)  None of the  compensation,  if any,  received  by the  undersigned  will be
     separate  consideration  for,  or  allocable  to,  any  of  its  shares  of
     Constituent  Corporation  stock;  none  of the  shares  of  ProMedCo  stock
     received  by  the  undersigned  will  be  separate  consideration  for,  or
     allocable to, any employment  agreement;  and the compensation  received by
     the undersigned will be for services actually rendered and will be

1




<PAGE>


                                                      -2-

                  commensurate with amounts paid to third parties  bargaining at
                  arm's-length for similar services.

(e)  The undersigned did not acquire any shares of Constituent Corporation stock
     in  contemplation  of the Merger and has no plan to acquire any  additional
     shares of  Constituent  Corporation  stock  between the date hereof and the
     Effective Time.

         The undersigned understands and acknowledges that (i) ProMedCo,  Merger
Sub and the  shareholders of the Constituent  Corporations may rely on the truth
and  accuracy of the  representations  contained in this  Certificate,  and (ii)
legal  counsel to  ProMedCo  and HP will rely on the truth and  accuracy  of the
representations  contained in this  Certificate in delivering any opinions as to
certain  federal  income  tax  consequences  of  the  Merger.   If  any  of  the
representations  contained  herein  ceases to be true at any time on or prior to
the  Effective  Time  of  the  Merger,  the  undersigned  shall  deliver  to the
Constituent  Corporation  in which  the  undersigned  holds  stock  and to legal
counsel to ProMedCo and such Constituent Corporation a written statement to that
effect.


                                                     By:


                                    Address:
Date:



<PAGE>


                                                      -3-

                                 APPENDIX 8.11A

                     FORM OF SONTHEIMER EMPLOYMENT AGREEMENT





                              EMPLOYMENT AGREEMENT

     EMPLOYMENT AGREEMENT, made as of August __, 1997, between ProMedCo
Management Company a Delaware corporation (the "Company"), and Robert M. 
Sontheimer ("Executive").

     In consideration  of the mutual  covenants  contained herein and other good
and  valuable  consideration,  the receipt and  sufficiency  of which are hereby
acknowledged, the parties hereto agree as follows:

     1. Employment.  The Company hereby employs Executive, and Executive accepts
employment  with the Company,  under the terms and  conditions set forth in this
Agreement for the period  beginning on the date hereof and ending as provided in
paragraph 4 hereof (the "Employment Period"). The date on which Executive ceases
to be employed by the Company and/or its  Subsidiaries (as defined below) or its
successors or assigns is referred to herein as the "Termination Date."

     2.  Position and Duties.

(a)  During the Employment  Period,  Executive shall perform such duties for the
     Company,  its affiliates and its  Subsidiaries as the Company may direct in
     its sole discretion.  Executive shall serve as Senior Vice President of the
     Company, and President and Chief Executive Officer of Health Plans, Inc., a
     subsidiary   of  the   Company.   Executive   will  be  based  in   Boston,
     Massachusetts,  and travel as required to effectively  manage Health Plans,
     Inc. in Portland,  Maine,  or as  otherwise  required in his capacity as an
     officer of the Company.

(b)  Executive shall devote  Executive's best efforts and full business time and
     attention  (except  for:  (a)  permitted  vacation  periods and  reasonable
     periods  of  illness or other  incapacity  and (b)  service on the Board of
     Directors  of Blue Tee to the  business  and  affairs of the  Company,  its
     affiliates and its  Subsidiaries.  Executive  shall perform such duties and
     responsibilities  to the  best  of  Executive's  abilities  in a  diligent,
     trustworthy, businesslike and efficient manner.


3






<PAGE>


                                                      -4-

(c)  For purposes of this Agreement,  "Subsidiaries"  shall mean any corporation
     of which the securities having at least 50% of the voting power in electing
     directors are, at the time of determination, owned by the Company, directly
     or through one or more Subsidiaries.

     3.           Compensation and Benefits.

(a)  For  and  in  consideration  of the  termination  of a  certain  Employment
     Agreement  entered into between New England  Affiliated  Health Plans, Inc.
     and  Executive,  dated  as of  the  1st  day  of  September,  1992,  and as
     subsequently amended,  Company hereby agrees to pay to Executive the sum of
     $560,000 in cash,  payable on the Closing Date of that certain  transaction
     entered   into   between  the  Company  and  Health   Plans,   Inc.,   (the
     "Transaction").

(b)  During the Employment  Period,  Executive's Base Salary (the "Base Salary")
     shall  be  $240,000  per  annum  or such  higher  rate as the  Compensation
     Committee may designate from time to time. The Base Salary shall be subject
     to annual  increases  of no less than the  increase in the  Consumer  Price
     Index for all goods and services,  U.S. All City Average Report,  published
     by the United States  Department of Labor for the preceding 12 months.  The
     Base Salary shall be payable in regular  install ments in  accordance  with
     the Company's general payroll practices.

(c)  The Company shall reimburse  Executive for all reasonable expenses incurred
     by him in the course of performing  his duties under this  Agreement  which
     are consistent with the Company's policies in effect from time to time with
     respect to travel,  entertainment and other business  expenses,  subject to
     the Company's  requirements  with respect to reporting and documentation of
     such expenses.

(d)  In addition to the Base Salary,  the Company may award a bonus to Executive
     following  the end of each fiscal year during the  Employment  Period based
     upon the Company's  achievement of operating goals during such fiscal year.
     The percentage and goals shall be as approved by the Compensation Committee
     of the Board of Directors for each such fiscal year,  and will typically be
     structured  such that a portion will be payable after the end of the fiscal
     year (the "Current  Portion") with the remaining  balance  payable in equal
     amounts after the end of each of the following three fiscal years, provided
     Executive is still employed by Company on such payment  dates.  The Current
     Portion of the bonus,  if any, shall be payable upon  determination  of the
     amount due, approximately 75 days after the end of the fiscal year.





<PAGE>


                                                      -5-

(e)  In  addition  to the Base  Salary  and any  bonuses  payable  to  Executive
     pursuant to this paragraph, during the Employment Period Executive shall be
     entitled to  participate  in all benefit  plans  adopted by Company for its
     Health Plans subsidiary including:

               (i) term life insurance, health insurance and disability 
                   insurance coverage,

              (ii) annual paid  vacation in  accordance  with  Company's
                   policies as from time to time established.

                  Such benefit plans may be modified from time to time to ensure
                  compliance with ERISA and then existing Company policies.

     4.           Term.

(a)  The  Employment  Period is for a term of three  years  ending on August __,
     2000, provided that (i) the Employment Period shall terminate prior to such
     date  upon  Executive's  resignation,  death  or  permanent  disability  or
     incapacity (as determined by the Board in its good faith judgment) and (ii)
     the Employment Period may be terminated by the Company at any time prior to
     such date For Cause (as defined  below) or Without  Cause.  The  Employment
     Period is automatically  extended for successive years unless notice to the
     contrary is given not later than ninety (90) days  preceding the end of the
     final year of the contract, and all terms of this Agreement shall remain in
     full force and effect  (unless  otherwise  specified  herein)  for any such
     renewal term.

(b)  If the Employment  Period is terminated by the Company  Without Cause prior
     to the third anniversary of the date of this Agreement,  Executive shall be
     entitled to receive his Base Salary, as in effect  immediately prior to the
     Termination Date,  through the third anniversary of this Agreement,  or one
     year,  whichever  is greater,  so long as  Executive  has not  breached the
     provisions of paragraphs 5, 6 and 7 hereof.  The payments described in this
     paragraph 4(b) shall be payable in regular  installments in accordance with
     the Company's  general payroll  practice.  The amounts payable  pursuant to
     this  paragraph  4(b) shall be  reduced  by the amount of any  compensation
     Executive  receives  with  respect to any other  employment  or  consulting
     during the  period,  however,  nothing  contained  herein  shall  impose on
     Executive  an  affirmative  duty to seek or accept  other  employment  Upon
     request from time to time,  Executive shall furnish the Company with a true
     and  complete  certificate  specifying  any  such  compensation  due  to or
     received by him.

(c)  If the  Employment  Period is  terminated  by the  Company  For Cause or is
     terminated as a result of Executive's resignation (except for "Good Reason"
     as hereinafter

5






<PAGE>


                                                      -6-

                  defined)  or normal  expiration  of the  Agreement,  Executive
                  shall be entitled to receive only his Base Salary  through the
                  Termination Date.

(d)  If the  Employment  Period is terminated by Executive for Good Reason,  the
     termination  will be treated  under this  Agreement  as if the  Company had
     terminated  Executive's  employment Without Cause under Paragraph 4(b). The
     following  shall  constitute  Good Reason for termination by the Executive:
     (i) Failure of the Company to continue  the  Executive  in the  position of
     Senior Vice  President  of the Company;  (ii)  material  diminution  in the
     nature or scope of the  Executive's  responsibilities,  duties or authority
     unless  performance  related;  (iii)  material  failure  of the  Company to
     provide the  Executive  compensation  and benefits in  accordance  with the
     terms of paragraph 3 hereof following notice and ten business days to cure;
     or (iv) relocation of the Executive's principal worksite more than 25 miles
     from its current site, without Executive's agreement in writing.

(e)  All of Executive's rights to fringe benefits and bonuses hereunder (if any)
     accruing after the  termination  of the Employment  Period shall cease upon
     termination,  provided  however,  if Employment Period is terminated by the
     Company  Without Cause ((4(b)  above)),  term life,  health and  disability
     insurance will continue through the third anniversary of this Agreement, or
     one year, which ever is greater,  so long as Executive has not breached the
     provisions of paragraphs 5, 6 and 7 hereof.

(f)  Except as specifically  provided  otherwise in paragraph 5, for purposes of
     this  Agreement,  "Cause"  shall mean (i) the  commission  of a felony or a
     crime involving moral  turpitude,  (ii) the commission of any act involving
     dishonesty, embezzlement or fraud with respect to the Company or any of its
     Subsidiaries,  (iii)  conduct  tending  to bring the  Company or any of its
     Subsidiaries into substantial public disgrace or disrepute, (iv) failure to
     perform  duties as  reasonably  directed by the  Company's  CEO,  (v) gross
     negligence or willful  misconduct with respect to the Company or any of its
     Subsidiaries,  (vi) Executive's violation of the non-competition provisions
     of  Section 7, (vii)  Executive's  material  breach of any duty owed to the
     Company,  including  without  limitation the duty of loyalty,  or (vii) any
     other  material  breach of this  Agreement,  all of the above as determined
     solely by the CEO of the  Company.  Cause shall not include acts or failure
     to act if  Executive  has  exercised  substantial  efforts in good faith to
     perform the duties reasonably  assigned or appropriate to his position,  as
     determined solely by the CEO.

(g)  If a "Change of Control" occurs and the Employment  Period is terminated or
     Executive  voluntarily  resigns within 12 months,  such  termination  shall
     constitute a termination  Without  Cause.  For this  purpose,  a "Change of
     Control" occurs when:





<PAGE>


                                                      -7-

                  -        any  "Person"  or  "Group"  (within  the  meaning  of
                           Sections   13(d)  and  14(d)(2)  of  the   Securities
                           Exchange Act of 1934  ("Exchange  Act")),  other than
                           the Executive or the Founders  (Richard E.  Ragsdale,
                           H.  Wayne  Posey,  E.  Thomas  Chaney,  and  Jack  W.
                           McCaslin),  or an entity the  majority  of the voting
                           stock  of  which  is  owned  or   controlled  by  the
                           Executive  or the  Founders  becomes the  "beneficial
                           owner"  (within the meaning of Rule 13d-3 and/or Rule
                           13d-5 under the  Exchange  Act,  except that a Person
                           shall be deemed to have "beneficial ownership" of all
                           shares  that such  Person  has the  right to  acquire
                           without  condition,  other than the  passage of time,
                           whether such right is exercisable immediately or only
                           after the passage of time),  directly  or  indirectly
                           30% or more of the  total  voting  power  of the then
                           outstanding voting stock of the Company; or

                  -        the Company consolidates with or merges into another 
                           Person or conveys, transfers or leases all or 
                           substantially all of its assets to any Person, or any
                           corporation consolidates with or merges into the 
                           Company pursuant to a transaction in which the 
                           outstanding voting stock of the Company is changed
                           into or exchanged for cash, securities or other 
                           property, other than a transaction between the 
                           Company and (i) an Affiliate of the Company, or (ii)
                           any other entity owned or controlled by the Founders.

     (h)          In the event the Company chooses to relocate the operations of
                  Health Plans outside of Portland Maine, and Executive  chooses
                  to terminate his Employment  Period instead of relocating with
                  the  operations  of  Health  Plans,   such  termination  shall
                  constitute  a  termination   Without  Cause  for  purposes  of
                  determining severance arrangements under this Agreement.

     5.  Liquidated  Damages.  The  parties  agree  that the  execution  of this
Employment Agreement is of substantial value to the Company, in conjunction with
its  consummation  of  the  Transaction.   Accordingly,  Executive  agrees  that
liquidated  damages  will be assessed  against the  Executive  should  Executive
breach the terms and conditions of this  Agreement,  either by Material  Default
(as hereinafter defined) in execution of the duties assigned  thereunder,  or by
the Early Termination (as hereinafter  defined)of such Agreement.  The amount of
such liquidated damages shall be assessed as follows:

                                 Months      1-12     70.76% of Issued Shares
                                 Months     13-24     42.45% of Issued Shares
                                 Months     25-36     17.69% of Issued Shares


7






<PAGE>


                                                      -8-

This amount has been determined by both parties to be fair  compensation for the
expenses and damages  that will be suffered by the Company.  Such shares will be
returned by Executive to the Company  within ten (10) days of the date of breach
by the Executive.

Material Default, for purposes of this paragraph, shall be defined as follows:

        (i)  conviction of a felony or other crime involving moral turpitude;

       (ii)  fraud, embezzlement or other dishonesty with respect to the 
             Company or Health Plan;

      (iii)  willful failure to perform or gross negligence in performance after
             specific notice and ten business days to cure.

Early  Termination,  for  purposes  of  this  paragraph,  shall  be  defined  as
termination of this Agreement for any reason other than as follows:

        (i)  death

       (ii)  disability as that term is defined in the Company's then current
             long term disability policy.

       (iii) Good Cause as defined in Paragraph 3(d) herein;

        (iv)  Change in Control as defined in Paragraph 3(g) herein.

         6.  Confidential  Information.  The  Executive  acknowledges  that  the
information, observations and data obtained by him while employed by the Company
concerning the business or affairs of the Company,  any of its affiliates or any
Subsidiary ("Confidential  Information") are the property of the Company or such
affiliate or Subsidiary, as the case may be. Therefore,  Executive agrees not to
disclose  to any  unauthorized  person or use for  Executive's  own  account any
Confidential  Information  without  the prior  written  consent of the  Company,
unless and to the extent that the aforementioned  matters become generally known
to and  available  for use by the public  other than as a result of  Executive's
acts or omissions to act in violation of this Agreement. Executive shall deliver
to the Company at the termination of the Employment Period, or at any other time
the Company may request, all memoranda, notes, plans, records, reports, computer
tapes and software and other documents and data (and copies thereof) relating to
the Confidential  Information,  Work Product or the business of the Company, any
of its  affiliates or any  Subsidiary  which  Executive may then possess or have
under her control.

         7.  Inventions  and  Patents.  Executive  agrees  that all  inventions,
innovations,  improvements,  developments, methods, designs, analyses, drawings,
reports,  and all similar or related  information which relates to the Company's
or any  of its  Subsidiaries'  actual  or  anticipated  business,  research  and
development or existing or future  products or services and which are conceived,
developed  or made  by  Executive  while  employed  by the  Company  and/or  its
Subsidiaries  ("Work  Product")  belong  to  the  Company  or  such  Subsidiary.
Executive will promptly  disclose such Work Product to the Board and perform all
actions reasonably requested by the Board (whether




<PAGE>


                                                      -9-

during or after the  Employment  Period) to establish and confirm such ownership
(including,  without limitation,  assignments,  consents, powers of attorney and
other instruments).

         8.       Non-Compete, Non-Solicitation.

(a)  Executive  acknowledges  that in the  course  of his  employment  with  the
     Company  he will  become  familiar  with  the  information  concerning  the
     Company,  its affiliates,  Subsidiaries  and its  predecessors and that his
     services have been and will be of special,  unique and extraordinary  value
     to the Company.  Therefore,  Executive  agrees that,  during the Employment
     Period and for the period of two years thereafter,  the Executive shall not
     directly or indirectly own, manage, control,  participate in, consult with,
     render services for, or in any manner engage in any business competing with
     the business of the Company or its Subsidiaries as such businesses exist or
     are in process on the date of the  termination of  Executive's  employment,
     within any  geographic  area in which the Company,  its  affiliates  or its
     Subsidiaries  engage or plan to engage in such  businesses.  Nothing herein
     shall prohibit  Executive from being a passive owner of not more than 3% of
     the  outstanding  stock of any  class of a  corporation  which is  publicly
     traded,  so long as Executive has no active  participa tion in the business
     of such corporation.

(b)  During the non-compete  Period,  executive shall not directly or indirectly
     through  another entity (i) induce or attempt to induce any employee of the
     Company, any of its affiliates or any Subsidiary to leave the employ of the
     Company or such affiliate or  Subsidiary,  or in any way interfere with the
     relationship  between the Company,  any of its affiliates or any Subsidiary
     and any employee  thereof,  (ii) hire any person who was an employee of the
     Company,  any of its  affiliates  or any  Subsidiary at any time during the
     Employment  Period,  or (iii)  induce or attempt  to induce  any  customer,
     supplier,  licensee or other business  relation of the Company,  any of its
     affiliates or any  subsidiary  to cease doing  business with the Company or
     such affiliate or Subsidiary, or in any way interfere with the relationship
     between any such customer,  supplier, licensee or business relation and the
     Company, any of its affiliates or any Subsidiary.

(c)  If Executive is terminated  by the Company  Without Cause or the Company is
     liquidated,   the  Non-compete  provisions  of  this  Agreement  will  also
     terminate upon the Termination Date or date of liquidation.

         9.  Enforcement.  If, at the time of enforcement of paragraph 5, 6 or 7
of this  Agreement,  a court  holds  that the  restrictions  stated  herein  are
unreasonable under  circumstances  then existing,  the parties hereto agree that
the  maximum  period,   scope  or  geographical   area  reasonable   under  such
circumstances shall be substituted for the stated period, scope or area.

9






<PAGE>


                                                      -10-

Because  Executive's  services  are unique and because  Executive  has access to
Confidential  Information and Work Product,  the parties hereto agree that money
damages  would  be an  inadequate  remedy  for any  breach  of  this  Agreement.
Therefore, in the event of a breach or threatened breach of this Agreement,  the
Company or its  successors  or assigns  may,  in  addition  to other  rights and
remedies existing in their favor,  apply to any court of competent  jurisdiction
for specific  performance and/or injunctive or other relief in order to enforce,
or prevent any violations of, the provisions  hereof (without  posting a bond or
other security).

         10. Executive Representation.  Executive hereby represents and warrants
to the  Company  that  (i)  the  execution,  delivery  and  performance  of this
Agreement by Executive does not and will not conflict with,  breach,  violate or
cause a default under any contract,  agreement,  instrument,  order, judgment or
decree to which Executive is a party or by which he is bound,  (ii) Executive is
not a party to or bound by an  employment  agreement,  non-compete  agreement or
confidentiality  agreement  with any other person or entity,  and (iii) upon the
execution and delivery of this Agreement by the Company, this Agreement shall be
the valid and binding  obligation of Executive,  enforceable in accordance  with
its terms.

         11. Survival.  Paragraphs 5, 6 and 7 shall survive and continue in full
force in accordance  with their terms  notwithstanding  any  termination  of the
Employment  Period,  unless  such  termination  was Without  Cause,  or due to a
liquidation  of the Company.  Additionally,  if this  Agreement is terminated by
Executive for Good Reason, Paragraphs 6 and 7 shall survive and continue in full
force in accordance  with their terms  notwithstanding  any  termination  of the
Employment Period .

         12.  Notices.  Any notice  provided for in this  Agreement  shall be in
writing and shall be either personally delivered, or mailed by first class mail,
return receipt requested, to the recipient at the Address indicated below:

           Notice to Executive:    _______________________________
                                           -------------------------------

          Notices to Company:      801 Cherry Street, Suite 1450
                                           Fort Worth, Texas 76102

or such other  address or to the attention of such other person as the recipient
party shall have  specified by prior written  notice to the sending  party.  Any
notice under this  Agreement will be deemed to have been given when so delivered
or mailed.

         13. Severability.  Whenever possible,  each provision of this Agreement
will  be  interpreted  in such a  manner  as to be  effective  and  valid  under
applicable  law, but if any  provision of this  Agreement is held to be invalid,
illegal or  unenforceable in any respect under any applicable law or rule in any
jurisdiction,  such invalidity,  illegality or unenforceability  will not affect
any  other  provision  or any other  jurisdiction,  but this  Agreement  will be
reformed, construed and enforced in




<PAGE>


                                                      -11-

such  jurisdiction as if such invalid,  illegal or  unenforceable  provision had
never been contained herein.

         14. Complete Agreement. This Agreement, in conjunction with those other
Agreements  entered into between the Company and Health Plans,  Inc. for purpose
of  transacting  a  statutory   merger,   embody  the  complete   agreement  and
understanding   among  the   parties  and   supersede   and  preempt  any  prior
understandings,  agreements or representations by or among the parties,  written
or oral, which may be related to the subject matter hereof in any way.

         15. Counterparts.  This Agreement may be executed in separate counter-
parts, each of which is deemed to be an original and all of which taken together
constitute one and the same agreement.

         16.  Successors  and  Assigns.  This  Agreement is intended to bind and
inure to the benefit of and be enforceable  by Executive,  the Company and their
respective heirs,  successors and assigns,  except that Executive may not assign
his rights or delegate  his  obligations  hereunder  without  the prior  written
consent of the Company.

         17. Governing Law. This Agreement shall be governed by and construed in
accordance  with the domestic laws of the State of Texas,  without giving effect
to any choice of law or conflict of law  provision or rule (whether of the State
of Texas or any other jurisdiction) that would cause the application of the laws
of any  jurisdiction  other  than the  State of  Texas.  In  furtherance  of the
foregoing,   the  internal  law  of  the  State  of  Texas  shall   control  the
interpretation  and  construction  of this  Agreement,  even  though  under that
jurisdiction's choice of law or conflict of law analysis, the substantive law of
some other jurisdiction would ordinarily apply.

         18.  Amendment  and Waiver.  The  provisions  of this  Agreement may be
amended  or waived  only with the  prior  written  consent  of the  Company  and
Executive,  and no  course of  conduct  or  failure  or delay in  enforcing  the
provisions  of this  Agreement  shall  affect the  validity,  binding  effect or
enforceability of this Agreement.

         19. Descriptive Headings.  The descriptive headings of this Agreement 
are inserted for convenience only and do not constitute a part of this 
Agreement.

         20. No Strict Construction;  Interpretation.  The language used in this
agreement  will be deemed to be the  language  chosen by the  parties  hereto to
express their mutual intent and no rule of strict  construction  will be applied
against any person.  The term  "including"  as used in this Agreement is used to
list items by way of example and shall not be deemed to  constitute a limitation
of any  term or  provision  contained  herein.  As used in this  Agreement,  the
singular  or plural  number  shall be deemed to include the other  whenever  the
context so requires.


11






<PAGE>


                                                      -12-

         IN WITNESS WHEREOF,  the parties hereto have executed this Agreement as
of the date first written above.

ProMedCo Management Company                      "Executive"



BY:_______________________________               ___________________________
         H. Wayne Posey                             Robert M. Sontheimer
         President and CEO




<PAGE>


                                                      -13-

                                 APPENDIX 8.11B
                      FORM OF WAGONER EMPLOYMENT AGREEMENT

             [The Wagoner Agreement is being negotiated directly between 
ProMedCo and Dr. Wagoner and will be attached to the execution form of this 
agreement it will be based on Appendix 8.11C]

13






<PAGE>


                                                      -1-


                                 APPENDIX 8.11C
                      GENERIC FORM OF EMPLOYMENT AGREEMENT




                              EMPLOYMENT AGREEMENT

         EMPLOYMENT  AGREEMENT,  made  as  of  ______,  1997,  between  ProMedCo
Management    Company   a   Delaware    corporation   (the    "Company"),    and
__________________ ("Employee").

         In  consideration  of the mutual  covenants  contained herein and other
good and valuable consideration, the receipt and sufficiency of which are hereby
acknowledged, the parties hereto agree as follows:

         1.  Employment.  The Company  hereby  employs  Employee,  and  Employee
accepts employment with the Company, under the terms and conditions set forth in
this  Agreement  for the  period  beginning  on the date  hereof  and  ending as
provided  in  paragraph 4 hereof (the  "Employment  Period").  The date on which
Employee  ceases to be  employed  by the  Company  and/or its  Subsidiaries  (as
defined  below)  or its  successors  or  assigns  is  referred  to herein as the
"Termination Date."

         2.       Position and Duties.

         (a)      During the  Employment  Period,  Employee  shall  perform such
                  duties for the Company, its affiliates and its Subsidiaries as
                  the Company may specify in its sole discretion. Employee shall
                  serve as _____________________ of the Company.

         (b)      Employee  shall  devote   Employee's  best  efforts  and  full
                  business  time and attention  (except for  permitted  vacation
                  periods and reasonable periods of illness or other incapacity)
                  to the business and affairs of the Company, its affiliates and
                  its  Subsidiaries.  Employee  shall  perform  such  duties and
                  responsibilities  to the  best of  Employee's  abilities  in a
                  diligent, trustworthy, businesslike and efficient manner.

         (c)      For purposes of this Agreement,  "Subsidiaries" shall mean any
                  corporation of which the securities having at least 50% of the
                  voting  power  in  electing  directors  are,  at the  time  of
                  determination,  owned by the Company,  directly or through one
                  or more Subsidiaries.


1






<PAGE>


                                                      -2-

         3.       Compensation and Benefits.

(a)  During the Employment  Period,  Employee's  Base Salary (the "Base Salary")
     shall  be  $_______  per  annum  or such  higher  rate as the  Compensation
     Committee may designate from time to time. The Base Salary shall be subject
     to annual  increases  of no less than the  increase in the  Consumer  Price
     Index for all goods and services,  U.S. All City Average Report,  published
     by the United States  Department of Labor for the preceding 12 months.  The
     Base Salary shall be payable in regular installments in accordance with the
     Company's general payroll practices.

(b)  The Company shall reimburse  Employee for all reasonable  expenses incurred
     by him/her in the course of performing  his/her duties under this Agreement
     which are  consistent  with the  Company's  policies in effect from time to
     time with respect to travel,  entertainment  and other  business  expenses,
     subject  to the  Company's  requirements  with  respect  to  reporting  and
     documentation of such expenses.

(c)  In addition to the Base  Salary,  the Company may award a bonus to Employee
     following  the end of each fiscal year during the  Employment  Period based
     upon the Company's  achievement of operating goals during such fiscal year.
     The percentage and goals shall be as approved by the Compensation Committee
     of the Board of Directors for each such fiscal year,  provided  Employee is
     still employed by Company on such payment dates.  The bonus,  if any, shall
     be payable  upon  determination  of the amount due,  approximately  75 days
     after the end of the fiscal year.

(d)  In addition to the Base Salary and any bonuses payable to Employee pursuant
     to this paragraph,  during the Employment Period Employee shall be entitled
     to  participate in all benefit plans adopted by Company for all or a select
     group of its employees, including:

           (i) term life insurance, health insurance and disability insurance 
               coverage,

          (ii) participation  in a stock option  program with grants as approved
               by the Option Committee from time to time, with an initial grant
               of  _______ shares exercisable at ______, and

         (iii) annual paid vacation in accordance with Company's policies as
               from time to time established.





<PAGE>


                                                      -3-

         4.       Term.

(a)  The  Employment  Period is for a term of ___ year(s)  ending on __________,
     ____, provided that (i) the Employment Period shall terminate prior to such
     date  upon  Employee's  resignation,   death  or  permanent  disability  or
     incapacity (as determined by the Board in its good faith judgment) and (ii)
     the Employment Period may be terminated by the Company at any time prior to
     such date For Cause (as defined  below) or Without  Cause.  The  Employment
     Period is automatically  extended for successive years unless notice to the
     contrary is given not later than ninety (90) days  preceding the end of the
     final year of the contract.

(b)  If the Employment  Period is terminated by the Company  Without Cause prior
     to the second anniversary of the date of this Agreement,  Employee shall be
     entitled to receive his/her Base Salary, as in effect  immediately prior to
     the  Termination  Date,  plus the average of bonuses  paid during the prior
     three years, through the second anniversary of this Agreement, or one year,
     whichever is greater,  so long as Employee has not breached the  provisions
     of  paragraphs  5, 6 and 7  hereof.  The Base  Salary  and  bonus  payments
     described in this paragraph  4(b) shall be payable in regular  installments
     in accordance with the Company's general payroll practice.

(c)  If the  Employment  Period is  terminated  by the  Company  For Cause or is
     terminated as a result of Employee's  resignation  or normal  expiration of
     the  Agreement,  Employee  shall be entitled to receive  only  his/her Base
     Salary through the Termination Date. In the case of normal expiration,  any
     earned bonus which is due will be paid.

(d)  All of Employee's  rights to fringe benefits and bonuses hereunder (if any)
     accruing after the  termination  of the Employment  Period shall cease upon
     termination,  provided  however,  if Employment Period is terminated by the
     Company  Without Cause ((4(b)  above)),  term life,  health and  disability
     insurance will continue  through the second  anniversary of this Agreement,
     or one year,  which ever is greater,  so long as Employee  has not breached
     the provisions of paragraphs 5, 6 and 7 hereof.

(e)  For purposes of this Agreement,  "Cause" shall mean (i) the commission of a
     felony or a crime involving moral turpitude, (ii) the commission of any act
     involving dishonesty,  embezzlement or fraud with respect to the Company or
     any of its Subsidiaries,  (iii) conduct tending to bring the Company or any
     of its  Subsidiaries  into substantial  public disgrace or disrepute,  (iv)
     failure to perform duties as reasonably  directed by the Company's CEO, (v)
     gross  negligence or willful  misconduct with respect to the Company or any
     of its  Subsidiaries,  (vi)  Employee's  violation  of the  non-competition
     provisions of Section 7, (vii) Employee's material

3






<PAGE>


                                                      -4-

                  breach  of any duty  owed to the  Company,  including  without
                  limitation  the duty of loyalty,  or (vii) any other  material
                  breach  of this  Agreement,  all of the  above  as  determined
                  solely by the CEO of the Company. Cause shall not include acts
                  or  failure  to  act if  Employee  has  exercised  substantial
                  efforts  in  good  faith  to  perform  the  duties  reasonably
                  assigned or  appropriate  to his/her  position,  as determined
                  solely by the CEO.

         5.  Confidential  Information.   The  Employee  acknowledges  that  the
information,  observations  and data obtained by him/her  while  employed by the
Company concerning the business or affairs of the Company, any of its affiliates
or any Subsidiary  ("Confidential  Information") are the property of the Company
or such affiliate or Subsidiary, as the case may be. Therefore,  Employee agrees
not to disclose to any unauthorized person or use for Employee's own account any
Confidential  Information  without  the prior  written  consent of the  Company,
unless and to the extent that the aforementioned  matters become generally known
to and available for use by the public other than as a result of Employee's acts
or omissions to act. Employee shall deliver to the Company at the termination of
the  Employment  Period,  or at any other  time the  Company  may  request,  all
memoranda, notes, plans, records, reports, computer tapes and software and other
documents  and  data  (and  copies   thereof)   relating  to  the   Confidential
Information,  Work Product or the business of the Company, any of its affiliates
or any Subsidiary which Employee may then possess or have under his/her control.

         6.  Inventions  and  Patents.  Employee  agrees  that  all  inventions,
innovations,  improvements,  developments, methods, designs, analyses, drawings,
reports,  and all similar or related  information which relates to the Company's
or any  of its  Subsidiaries'  actual  or  anticipated  business,  research  and
development or existing or future  products or services and which are conceived,
developed  or  made  by  Employee  while  employed  by the  Company  and/or  its
Subsidiaries ("Work Product") belong to the Company or such Subsidiary. Employee
will  promptly  disclose  such Work Product to the Board and perform all actions
reasonably  requested  by the Board  (whether  during  or after  the  Employment
Period) to establish and confirm such ownership (including,  without limitation,
assignments, consents, powers of attorney and other instruments).

         7.       Non-Compete, Non-Solicitation.

(a)  Employee  acknowledges  that in the course of his/her  employment  with the
     Company  he/she will become  familiar with the  information  concerning the
     Company, its affiliates, Subsidiaries and its predecessors and that his/her
     services have been and will be of special,  unique and extraordinary  value
     to the Company.  Therefore,  Employee  agrees that,  during the  Employment
     Period and for the period of two years  thereafter,  the Employee shall not
     directly or indirectly own, manage, control,  participate in, consult with,
     render services for, or in any manner engage in any business competing with
     the business of the Company or its Subsidiaries as such businesses exist or
     are in process on the date of the termination of Employee's




<PAGE>


                                                      -5-

                  employment,  within any geographic  area in which the Company,
                  its affiliates or its Subsidiaries engage or plan to engage in
                  such businesses.  Nothing herein shall prohibit  Employee from
                  being a passive  owner of not more than 3% of the  outstanding
                  stock of any class of a corporation  which is publicly traded,
                  so  long  as  Employee  has  no  active  participation  in the
                  business of such corporation.

(b)  During the  non-compete  Period,  Employee shall not directly or indirectly
     through  another entity (i) induce or attempt to induce any employee of the
     Company, any of its affiliates or any Subsidiary to leave the employ of the
     Company or such affiliate or  Subsidiary,  or in any way interfere with the
     relationship  between the Company,  any of its affiliates or any Subsidiary
     and any employee  thereof,  (ii) hire any person who was an employee of the
     Company,  any of its  affiliates  or any  Subsidiary at any time during the
     Employment  Period,  or (iii)  induce or attempt  to induce  any  customer,
     supplier,  licensee or other business  relation of the Company,  any of its
     affiliates or any  subsidiary  to cease doing  business with the Company or
     such affiliate or Subsidiary, or in any way interfere with the relationship
     between any such customer,  supplier, licensee or business relation and the
     Company, any of its affiliates or any Subsidiary.

(c)  If Employee is  terminated  by the Company  Without Cause or the Company is
     liquidated,   the  Non-compete  provisions  of  this  Agreement  will  also
     terminate upon the Termination Date or date of liquidation.

         8.  Enforcement.  If, at the time of enforcement of paragraph 5, 6 or 7
of this  Agreement,  a court  holds  that the  restrictions  stated  herein  are
unreasonable under  circumstances  then existing,  the parties hereto agree that
the  maximum  period,   scope  or  geographical   area  reasonable   under  such
circumstances shall be substituted for the stated period, scope or area. Because
Employee's  services are unique and because  Employee has access to Confidential
Information and Work Product,  the parties hereto agree that money damages would
be an  inadequate  remedy for any breach of this  Agreement.  Therefore,  in the
event of a breach or  threatened  breach of this  Agreement,  the Company or its
successors or assigns may, in addition to other rights and remedies  existing in
their  favor,  apply  to  any  court  of  competent  jurisdiction  for  specific
performance  and/or  injunctive or other relief in order to enforce,  or prevent
any  violations  of,  the  provisions  hereof  (without  posting a bond or other
security).

         9. Employee Representation.  Employee hereby represents and warrants to
the Company that (i) the execution,  delivery and  performance of this Agreement
by Employee  does not and will not  conflict  with,  breach,  violate or cause a
default under any contract, agreement,  instrument, order, judgment or decree to
which  Employee is a party or by which he/she is bound,  (ii)  Employee is not a
party  to  or  bound  by  an  employment  agreement,  non-compete  agreement  or
confidentiality  agreement  with any other person or entity,  and (iii) upon the
execution and delivery

5






<PAGE>


                                                      -6-

of this Agreement by the Company,  this Agreement shall be the valid and binding
obligation of Employee, enforceable in accordance with its terms.

         10. Survival.  Paragraphs 5, 6 and 7 shall survive and continue in full
force in accordance  with their terms  notwithstanding  any  termination  of the
Employment Period, unless such termination was Without Cause.

         11.  Notices.  Any notice  provided for in this  Agreement  shall be in
writing and shall be either personally delivered, or mailed by first class mail,
return receipt requested, to the recipient at the Address indicated below:

      Notice to Employee:                _______________________________
                                         -------------------------------

      Notices to Company:                801 Cherry Street,  Suite 1450
                                         Fort Worth, Texas 76102

or such other  address or to the attention of such other person as the recipient
party shall have  specified by prior written  notice to the sending  party.  Any
notice under this  Agreement will be deemed to have been given when so delivered
or mailed.

         12. Severability.  Whenever possible,  each provision of this Agreement
will  be  interpreted  in such a  manner  as to be  effective  and  valid  under
applicable  law, but if any  provision of this  Agreement is held to be invalid,
illegal or  unenforceable in any respect under any applicable law or rule in any
jurisdiction,  such invalidity,  illegality or unenforceability  will not affect
any  other  provision  or any other  jurisdiction,  but this  Agreement  will be
reformed,  construed  and  enforced  in such  jurisdiction  as if such  invalid,
illegal or unenforceable provision had never been contained herein.

         13.  Complete  Agreement.  This Agreement,  those  documents  expressly
referred to herein and other documents of even date herewith embody the complete
agreement  and  understanding  among the parties and  supersede  and preempt any
prior  understandings,  agreements or  representations  by or among the parties,
written or oral, which may be related to the subject matter hereof in any way.

        14. Counterparts.  This Agreement may be executed in separate counter-
parts, each of which is deemed to be in an original and all of which taken 
together constitute one and the same agreement.

         15. Successors and Assigns.  This Agreement is intended to bind and 
inure to the benefit of and be enforceable by Employee, the Company and their 
respective heirs, successors and assigns,




<PAGE>


                                                      -7-

except  that  Employee  may  not  assign  his/her  rights  or  delegate  his/her
obligations hereunder without the prior written consent of the Company.

         16. Governing Law. This Agreement shall be governed by and construed in
accordance  with the domestic laws of the State of Texas,  without giving effect
to any choice of law or conflict of law  provision or rule (whether of the State
of Texas or any other jurisdiction) that would cause the application of the laws
of any  jurisdiction  other  than the  State of  Texas.  In  furtherance  of the
foregoing,   the  internal  law  of  the  State  of  Texas  shall   control  the
interpretation  and  construction  of this  Agreement,  even  though  under that
jurisdiction's choice of law or conflict of law analysis, the substantive law of
some other jurisdiction would ordinarily apply.

         17.  Amendment  and Waiver.  The  provisions  of this  Agreement may be
amended  or waived  only with the  prior  written  consent  of the  Company  and
Employee,  and no  course  of  conduct  or  failure  or delay in  enforcing  the
provisions  of this  Agreement  shall  affect the  validity,  binding  effect or
enforceability of this Agreement.

         18. Descriptive Headings.  The descriptive headings of this Agreement 
are inserted for convenience only and do not constitute a part of this 
Agreement.

         19. No Strict Construction;  Interpretation.  The language used in this
agreement  will be deemed to be the  language  chosen by the  parties  hereto to
express their mutual intent and no rule of strict  construction  will be applied
against any person.  The term  "including"  as used in this Agreement is used to
list items by way of example and shall not be deemed to  constitute a limitation
of any  term or  provision  contained  herein.  As used in this  Agreement,  the
singular  or plural  number  shall be deemed to include the other  whenever  the
context so requires.

         IN WITNESS WHEREOF,  the parties hereto have executed this Agreement as
of the date first written above.

ProMedCo Management Company                    "Employee"

BY:_______________________________              __________________________
         H. Wayne Posey
         President and CEO

7





<PAGE>


                                                       - 1 -


                                SECOND AMENDMENT


                  SECOND  AMENDMENT  dated as of October 14, 1997 among ProMedCo
Management Company, a Delaware corporation ("ProMedCo"), HP Acquisition Corp., a
Maine corporation and a wholly-owned subsidiary of ProMedCo ("MergerSub"),  PBMA
Health  Systems,  Inc., a Maine  corporation  ("HSI") and Health Plans,  Inc., a
Maine corporation  ("HP"; HSI and HP are collectively  referred to herein as the
"Constituent Corporations").


                                    RECITAL:

                  ProMedCo,  MergerSub  and  the  Constituent  Corporations  are
parties to an Agreement  for  Statutory  Mergers  dated as of July 25, 1997 (the
"Merger Agreement"). At the time they executed the Merger Agreement, the parties
contemplated that the Closing of the mergers and other transactions contemplated
by the Merger  Agreement would be consummated on or prior to September 17, 1997.
On September  16, 1997,  ProMedCo,  MergerSub and the  Constituent  Corporations
entered into a First Amendment to the Merger  Agreement to reflect the fact that
the Closing would not occur on or prior to the  originally  anticipated  closing
date. It now appears that the Closing will be further  delayed,  and the parties
desire to amend the Merger Agreement to reflect such later date.

                  The parties agree as follows:

                  1. Amendment of Section 2.4. In the third line of Section 2.4,
"October 15, 1997" is hereby amended to read "November 15, 1997".

                  2. Amendment of Section 9.1. In clauses (b) and (c) of Section
9.1, "October 15, 1997" is hereby amended to read "November 15, 1997".

                  3.  Amendment  of Section  9.3. In Section  9.3,  "October 15,
1997" is hereby amended to read "November 15, 1997".

                  4. All other terms and provisions of the Merger  Agreement and
the appendices thereto remain in full force and effect.

                  IN WITNESS WHEREOF, the parties hereto have duly executed this
Agreement as of the day and year first above written.

                                  PROMEDCO MANAGEMENT COMPANY



                                   By
                                   Its
                                   Name



1






<PAGE>


                                                       - 2 -
                                     HP ACQUISITION CORP



                                      By
                                      Its
                                      Name


                                      HEALTH PLANS, INC.



                                      By
                                      Its
                                      Name


                                      PBMA HEALTH SYSTEMS, INC.



                                      By
                                      Its
                                      Name







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