UNITED STATES
SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549
FORM 13F
FORM 13F COVER PAGE
Report for the Calendar Year or Quarter Ended: December 31, 1999
Check here if Amendment [ ]; Amendment Number:
This amendment (Check only one.): [ ] is a restatement.
[ ] adds new holdings entries.
Institutional Investment Manager Filing this Report:
Name: DEERFIELD MANAGEMENT
Address:
13 File Number: 28-5366
The institutional investment manager filing this report and the
person by whom it is signed hereby represent that the person
signing the report is authorized to submit it, that all
information contained herein is true, correct, and complete, and
and that it is understood that all required items, statements,
schedules, lists, and tables, are considered integral parts of
this form
Person Signing this Report on Behalf of Reporting Manager:
Name:
Title:
Phone:
Signature, Place and Date of Signing:
February 1, 2000
Report Type (Check only one.):
[ X] 13F HOLDINGS REPORT.
[ ] 13F NOTICE.
[ ] 13F COMBINATION REPORT.
I AM SIGNING THIS REPORT AS REQUIRED BY THE SECURITIES EXCHANGE
ACT OF 1934
<PAGE>
FORM 13F SUMMARY PAGE
Report Summary:
Number of Other Included Managers: 0
Form 13F Information Table Entry Total: 64
Form 13F Information Table Value Total: 785461
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FORM 13F INFORMATION TABLE
VALUE SHARES/ SH/ PUT/ INVSTMT OTHER VOTING AUTHORITY
NAME OF ISSUER TITLE OF CLASS CUSIP x($1000) PRN AMT PRN CALL DISCRETN MANAGERS SOLE SHARED NONE
------------------------------ ---------------- --------- -------- -------- --- ---- -------- --------- -------- -------- --------
D ABGENIX INC COM STK COMMON STOCK 00339B107 33125 250000 SH SOLE 250000 0 0
D ABIOMED INC COM COMMON STOCK 003654100 3675 100000 SH SOLE 100000 0 0
D ADAC LABS COM NEW COMMON STOCK 005313200 3762 350000 SH SOLE 350000 0 0
D ADVANCED TISSUE SCIENCES INC COMMON STOCK 00755F103 1025 410000 SH SOLE 410000 0 0
D AFFYMETRIX INC OC-CAP STK COMMON STOCK 00826T108 36228 213500 SH SOLE 213500 0 0
D ALZA CORP COM FORMERLY CL A UN COMMON STOCK 022615108 10387 300000 SH SOLE 300000 0 0
D AMER HOME PRODS CORP COM COMMON STOCK 026609107 23550 600000 SH SOLE 600000 0 0
D AMGEN INC USD.0001 COM COMMON STOCK 031162100 25826 430000 SH SOLE 430000 0 0
D AMYLIN PHARMACEUTICALS INC COMMON STOCK 032346108 13350 1600000 SH SOLE 1600000 0 0
D APRIA HEALTHCARE GROUP INC COM COMMON STOCK 037933108 7713 430000 SH SOLE 430000 0 0
D ATS MEDICAL INC COM COMMON STOCK 002083103 1493 100000 SH SOLE 100000 0 0
D BARD C R INC COM COMMON STOCK 067383109 25175 475000 SH SOLE 475000 0 0
D BARR LABS INC COM COMMON STOCK 068306109 7843 250000 SH SOLE 250000 0 0
D BERGEN BRUNSWIG CORP CL A COMMON STOCK 083739102 7065 850000 SH SOLE 850000 0 0
D BIOCHEM PHARMA INC CAD COM NPV COMMON STOCK 09058T108 9243 425000 SH SOLE 425000 0 0
D CARDINAL HEALTH INC COM COMMON STOCK 14149Y108 38300 800000 SH SOLE 800000 0 0
D CAREMARK RX COMMON STOCK COMMON STOCK 141705103 6075 1200000 SH SOLE 1200000 0 0
D CEPHALON INC COM COMMON STOCK 156708109 6912 200000 SH SOLE 200000 0 0
D CHIRON CORP COM COMMON STOCK 170040109 25425 600000 SH SOLE 600000 0 0
D CORIXA CORP COM COMMON STOCK 21887F100 4326 254500 SH SOLE 254500 0 0
D CVS CORP COM COMMON STOCK 126650100 7975 200000 SH SOLE 200000 0 0
D CYGNUS INC COM COMMON STOCK 232560102 16196 887500 SH SOLE 887500 0 0
D DENTSPLY INTL INC NEW COM COMMON STOCK 249030107 10040 425000 SH SOLE 425000 0 0
D DURA PHARM INC COM COMMON STOCK 26632S109 11846 850000 SH SOLE 850000 0 0
D EXPRESS SCRIPTS INC COM COMMON STOCK 302182100 16000 250000 SH SOLE 250000 0 0
D FISHER IMAGING CORP COMMON STOCK 337719108 984 525000 SH SOLE 525000 0 0
D FOREST LABS INC COM COMMON STOCK 345838106 36862 600000 SH SOLE 600000 0 0
D GENSET SA SPONSORED ADR ADRS STOCKS 37244T104 3812 200000 SH SOLE 200000 0 0
D GUILFORD PHARMACEUTICALS INC COMMON STOCK 401829106 15300 900000 SH SOLE 900000 0 0
D HEALTH SYSTEMS DESIGN CORP COMMON STOCK 421964107 420 80000 SH SOLE 80000 0 0
D HEARTPORT INC COM COMMON STOCK 421969106 1187 250000 SH SOLE 250000 0 0
D HUMAN GENOME SCIENCES INC COMMON STOCK 444903108 38156 250000 SH SOLE 250000 0 0
D IDEXX LABORATORIES INC COM COMMON STOCK 45168D104 6450 400000 SH SOLE 400000 0 0
D IMMUNOGEN INC COM COMMON STOCK 45253H101 412 75000 SH SOLE 75000 0 0
D INCYTE PHARMACEUTICALS INC COMMON STOCK 45337C102 33000 550000 SH SOLE 550000 0 0
D LA JOLLA PHARMACEUTICAL CO COMMON STOCK 503459109 759 300000 SH SOLE 300000 0 0
D LABORATORY CORP AMER HLDGS COM COMMON STOCK 50540R102 7375 2000000 SH SOLE 2000000 0 0
D LIGAND PHARMACEUTICALS INC COMMON STOCK 53220K207 7016 545000 SH SOLE 545000 0 0
D MAGELLAN HEALTH SVCS INC COM COMMON STOCK 559079108 3156 500000 SH SOLE 500000 0 0
D MEDAREX INC COM COMMON STOCK 583916101 14900 400000 SH SOLE 400000 0 0
D MILLENNIUM PHARMACEUTICALS INC COMMON STOCK 599902103 24400 200000 SH SOLE 200000 0 0
D MOTHERNATURE COM STK COMMON STOCK 61978K105 2925 400000 SH SOLE 400000 0 0
D NABI INC COM COMMON STOCK 628716102 12071 2610000 SH SOLE 2610000 0 0
D NCS HEALTHCARE INC CL A COM COMMON STOCK 628874109 1082 450000 SH SOLE 450000 0 0
D NOVOSTE CORP COM COMMON STOCK 67010C100 8992 545000 SH SOLE 545000 0 0
D OMNICARE INC COM COMMON STOCK 681904108 300 25000 SH SOLE 25000 0 0
D PE CORP-PE BIOSYSTEMS GROUP COMMON STOCK 69332S102 12031 100000 SH SOLE 100000 0 0
D PROGENICS PHARMACEUTICALS INC COMMON STOCK 743187106 4887 100000 SH SOLE 100000 0 0
D QLT PHOTOTHERAPEUTIC S INC COMMON STOCK 746927102 36131 615000 SH SOLE 615000 0 0
D QUEST DIAGNOSTICS INC COMMON STOCK 74834L100 12225 400000 SH SOLE 400000 0 0
D QUINTILES TRANSNATIONAL CORP COMMON STOCK 748767100 9343 500000 SH SOLE 500000 0 0
D RENAL CARE GROUP INC COM COMMON STOCK 759930100 9350 400000 SH SOLE 400000 0 0
D SHIRE PHARMACEUTICAL GROUP PLC ADRS STOCKS 82481R106 18220 625599 SH SOLE 625599 0 0
D SICOR INC COM COMMON STOCK 825846108 2635 340000 SH SOLE 340000 0 0
D TENET HEALTHCARE CORP COM COMMON STOCK 88033G100 16450 700000 SH SOLE 700000 0 0
D TEVA PHARMACEUTICAL ADR FOR 10 ADRS STOCKS 881624209 22796 318000 SH SOLE 318000 0 0
D TOTAL RENAL CARE HLDGS INC COM COMMON STOCK 89151A107 1337 200000 SH SOLE 200000 0 0
D TRIGON HEALTHCARE INC COMMON STOCK 89618L100 8850 300000 SH SOLE 300000 0 0
D TRIPATH IMAGING INC COM STK COMMON STOCK 896942109 2887 700000 SH SOLE 700000 0 0
D VARIAN MED SYSTEMS INC COMMON STOCK 92220P105 11925 400000 SH SOLE 400000 0 0
D VERTEX PHARMACEUTICALS INC COMMON STOCK 92532F100 3237 92500 SH SOLE 92500 0 0
D VIROPHARMA INC COM COMMON STOCK 928241108 8214 222000 SH SOLE 222000 0 0
D VISION TWENTY-ONE INC COM COMMON STOCK 92831N101 1650 600000 SH SOLE 600000 0 0
D VISX INC (DELAWARE) USD.01 CO COMMON STOCK 92844S105 31179 602500 SH SOLE 602500 0 0
S REPORT SUMMARY 64 DATA RECORDS 785461 0 OTHER MANAGERS ON WHOSE BEHALF REPORT IS FILED
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