Doctor profile · Federal record

Dr. William Isacoff, M.D.

Hematology & Oncology Physician · Santa Monica, CA

  • NPI 1891773123
  • 20 yrs on file
  • Male
  • Solo practice
  • No sanctions

Practice & contact

NPPES Updated May 11, 2026
Primary practice
2811 Wilshire Blvd Ste 414
Santa Monica, CA 904034804
(310) 824-4133
fax (310) 201-6685

Credentials & registration

NPPES · NUCC
NPI registered
January 2006 — 20 yrs on file
Profile last updated
May 3, 2021
Specialty taxonomy
207RH0003X — NUCC code
State license (1)
California #G24596
Medicaid
CA #00G245960

Federal sanctions & exclusions

OIG LEIE Updated May 11, 2026

No sanctions, exclusions or revocations on file

Checked against OIG LEIE on NPI 1891773123. Last verified May 11, 2026.

Open Payments

Industry payments received

CMS Open Payments
All-time total
$846
Transactions
31
Manufacturers
15
Payer (manufacturer) Industry Txns Amount
Incyte Corporation 5 $129.37
Merck Sharp & Dohme LLC 4 $116.97
Daiichi Sankyo Inc. 3 $84.16
Takeda Pharmaceuticals U.S.A., Inc. 2 $67.92
Boehringer Ingelheim Pharmaceuticals, Inc. 2 $62.06
Novartis Pharmaceuticals Corporation 3 $61.11
Lilly USA, LLC 2 $57.67
AstraZeneca Pharmaceuticals LP 2 $37.00
Coherus Biosciences Inc. 2 $32.56
Blue Earth Diagnostics Limited 1 $27.29
Ipsen Biopharmaceuticals, Inc 1 $27.08
Blueprint Medicines Corporation 1 $26.95
Bayer Healthcare Pharmaceuticals Inc. 1 $23.00
Genmab U.S., Inc. 1 $22.94
Fresenius Kabi USA, LLC 1 $20.24

By nature of payment

Food and Beverage
$846

Medicare Part D · 2023

Top prescriptions

CMS Part D Prescriber
Total claims
110
Patients
0
Total drug cost
$136,861
Drug Type Claims Patients Total cost
Creon (Lipase/Protease/Amylase) Brand 55 0 $135,356
Sodium Chloride (0.9 % Sodium Chloride) Brand 15 0 $202
Valacyclovir (Valacyclovir Hcl) Brand 15 0 $1,021
Granisetron Hcl Generic 14 0 $164
Prednisone Generic 11 0 $118

Frequently asked questions

Auto-generated from federal data
What is Dr. William Isacoff's medical specialty?
Dr. William Isacoff practices Hematology & Oncology Physician in Santa Monica, CA.
Where does Dr. William Isacoff practice?
Dr. William Isacoff practices at 2811 Wilshire Blvd Ste 414, Santa Monica, CA 904034804. Office phone: 3108244133.
What is Dr. William Isacoff's NPI?
Dr. William Isacoff's National Provider Identifier (NPI) is 1891773123, issued by NPPES.