Dr. William H. Isacoff, MD
- Medicare services, 2022
- 319
- Part D claims, 2024
- 226
- Publications
- 16
- Clinical trials
- 1
- Industry payments
- $110,937
- Practice address
- 8700 Beverly Blvd, West Hollywood, CA 90048
- Practice phone
- Call (323) 866-8600
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Cedars-Sinai Medical Center
West Hollywood, California
Find Dr. Isacoff's professional email, personal email and mobile number
Dmand AI checks each channel through healthcare-specific waterfall enrichment. See what is on file with a free account, with practice phones, licenses and affiliations.
Dr. William H. Isacoff is a hematologist and oncologist in West Hollywood, California
Dr. Isacoff practices at Cedars-Sinai Medical Center in West Hollywood, California.
Dr. Isacoff's NPI, 1891773123, was assigned on January 6, 2006. Dr. Isacoff graduated from New York Medical College in 1970. Dr. Isacoff's California license number on file is G24596.
- NPI
- 1891773123NPI Registry (opens in a new tab)
- NPI enumeration date
- January 6, 2006
- NPI status
- Active
- Practice phone
- (323) 866-8600
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 82
- Medical school graduation
- 1970
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Practice Data
Dr. William H. Isacoff practices at Cedars-Sinai Medical Center in West Hollywood, California
Dr. Isacoff's primary practice is Cedars-Sinai Medical Center, at 8700 Beverly Blvd, West Hollywood, CA 90048 in Los Angeles County. The practice phone is (323) 866-8600.
- Cedars-Sinai Medical Center8700 Beverly Blvd, West Hollywood, CA 90048 · Los Angeles CountyPhone(323) 866-8600
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Dr. William H. Isacoff is affiliated with 3 sites of care and 1 medical group
Dr. Isacoff's primary practice is Cedars-Sinai Medical Center in West Hollywood, California. The medical group on file is Sarcoma Oncology Center. Dmand AI also links Dr. Isacoff to 1 more physician office and 1 group practice or clinic, each named with a free account.
Sources: NPPES NPI Registry (CMS); Dmand AI Practice Data; and Dmand AI Affiliation Data
Dmand AI tracks the EHR system at Dr. William H. Isacoff's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Isacoff practices, 2 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Cedars-Sinai Medical Center | Available with a free account |
| +2 more affiliated sites | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. William H. Isacoff is one of 1,502 hematologists and oncologists in California
Hematology and oncology is Dr. Isacoff's primary specialty in the NPI Registry, under taxonomy code 207RH0003X. Dr. Isacoff is board certified in hematology by the American Board of Internal Medicine. Dr. Isacoff has a license on file in California.
Specialties and state licenses
- Hematology and oncology, CaliforniaPrimary
Clinical focus
Dmand AI lists colorectal cancer and prostate cancer among the conditions Dr. Isacoff treats.
Hematologists and oncologists near Dr. Isacoff
Counts of hematologists and oncologists with a Dmand AI profile, by place and practice. Each opens the list.
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Peer Benchmarks
Dr. William H. Isacoff billed Medicare for 319 services in 2022
CMS data shows 319 Medicare services from Dr. Isacoff across 2 procedure codes in 2022, all of them office visits. Medicare paid $32,718 for them. Every service was in an office.
Dr. Isacoff's Medicare services by type, 2021 to 2022
- 2021
- 2022
- Office and hospital visits
- 2021: 8342022: 31962%
- Drugs given in the office
- 2021: 37,2612022: 0100%
- Lab and pathology
- 2021: 3672022: 0100%
- Tests and treatments
- 2021: 1,2182022: 0100%
- Other services
- 2021: 1,2552022: 0100%
Dr. Isacoff compared with the California median for hematologists and oncologists, 2022
- Dr. Isacoff
- California median
- Medicare services
- 319vs 93266% below
- Part D claims
- 101vs 39474% below
Medians across 1,367 hematologists and oncologists in California with Dmand AI profiles that report each measure.
Dr. Isacoff's most billed Medicare procedure codes, 2022
CMS publishes codes billed for 11 or more Medicare patients. Each label is the code family; CPT descriptions are licensed by the AMA.
Need commercial claims for Dr. Isacoff?
Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Isacoff and other hematologists and oncologists in California.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. William H. Isacoff's patients have a median age of 73
Across all payers, Dmand AI patient panel data puts Dr. Isacoff's median patient age at 73, with 33% women.
Dr. Isacoff's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 73
Patient panel by sex, all payers
- Women33%
- Men60%
Source: Dmand AI Patient Panel Data
Dr. William H. Isacoff wrote 226 Medicare Part D claims in 2024
In 2024, Dr. Isacoff wrote 226 Medicare Part D claims for 18 patients. 59% of them were for generic drugs. CMS names the drug for 101 of them, across 3 drugs with 11 or more claims each, at $112,182 in total drug cost. In 2023, CMS named 110 claims across 5 drugs.
Dr. Isacoff's Part D claims by kind of drug, 2024
- Generic133 claims59%
- Brand-name93 claims41%
Dr. Isacoff's most prescribed drugs by claims, 2024
CMS names a drug when it has 11 or more claims. Share is of the claims for drugs CMS names.
Drug classes CMS tracks in Dr. Isacoff's Part D claims, 2024
- Opioids7%15 of 226 claims
Share of all Part D claims for each drug class CMS reports on. Classes with no claims are left out.
Part D claims for drugs CMS names, 2023 to 2024
- 2023
- 2024
- Claims for drugs CMS names
- 2023: 1102024: 1018%
Drugs named by CMS: 3 in 2024, 5 in 2023.
Sources: Medicare Part D Prescribers - by Provider and Drug (CMS), 2024 data, released May 6, 2026; and Medicare Part D Prescribers - by Provider (CMS), 2024 data
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Dr. William H. Isacoff has 16 publications on record
Dmand AI links 16 papers to Dr. Isacoff, published from 2011 to 2022. 2013 was the busiest year, with 2. The most frequent topics are Fluorouracil, Methotrexate and Leucovorin. Dr. Isacoff has published most often in Cancer Treat Rep. Dr. Isacoff's most frequent co-authors are Howard Albert Reber, MD, James Samuel Tomlinson, MD and Graham W. Donald, MD.
Dr. Isacoff's papers by year, 2011 to 2022
Topics Dr. Isacoff writes about most
- Fluorouracil
- Methotrexate
- Leucovorin
- Melanoma
- Amphotericin B
- Antineoplastic Combined Chemotherapy Protocols
- Cell Line
- Colorectal Neoplasms
Dr. Isacoff's most frequent co-authors
- Howard Albert Reber, MD3 shared papers
- James Samuel Tomlinson, MD3 shared papers
- Graham W. Donald, MD2 shared papers
Recent publications by Dr. Isacoff
Tech Coloproctol
See who Dr. Isacoff researches with
Physician Network Discovery turns co-authorship, shared hospitals and shared groups into a map of who Dr. Isacoff works with, so you can find a warm path to the right hematologists and oncologists.
Sources: PubMed (National Library of Medicine); and Dmand AI Research Linkage
Dr. William H. Isacoff has worked on 1 clinical trial
Dmand AI links Dr. Isacoff to 1 clinical trial. Conditions studied include Pancreatic Neoplasms and Pancreatic Diseases.
Conditions in Dr. Isacoff's trials
- Pancreatic Neoplasms
- Pancreatic Diseases
Recent clinical trials with Dr. Isacoff
S9700 Combination Chemotherapy in Treating Patients With Stage II or Stage III Pancreatic Cancer (opens in a new tab)
Sources: Dmand AI Research Linkage; and ClinicalTrials.gov (National Library of Medicine)
Dr. William H. Isacoff received $110,937 in industry payments from 2016 to 2025
CMS Open Payments shows 494 general payments to Dr. Isacoff from 66 drug and device companies from 2016 to 2025. Charitable contributions make up the largest share, 90% of the total. Celgene Corporation paid the most, $101,108.
General payments to Dr. Isacoff by program year, 2016 to 2025
General payments to Dr. Isacoff by kind, 2016 to 2025
- Charitable contributions$100,00090%
- Food and beverage$10,93710%
Companies that paid Dr. Isacoff the most, 2016 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. William H. Isacoff graduated from New York Medical College
Dr. Isacoff graduated from New York Medical College in 1970.
- Medical school
- Board certified in hematology
- Board certified in internal medicine
- Board certified in medical oncology
Source: Dmand AI Professional Profile Data
Dr. William H. Isacoff accepts plans from 5 insurance carriers
Dr. Isacoff is in network with 5 carriers, including Aetna, Blue Cross Blue Shield of Massachusetts and HCSC. Medicare plans come from the most carriers, 5. Check the plan with the practice before a visit.
- Aetna
- Blue Cross Blue Shield of Massachusetts
- HCSC
- Humana
- Regence Health Plans
Plan types Dr. Isacoff accepts, by number of carriers
- Medicare5
- PPO5
- EPO1
- HMO1
- POS1
Source: Dmand AI Insurance Network Data
Sources for Dr. William H. Isacoff's profile data
| Data on this page | Source |
|---|---|
| NPI, name, sex, specialty and licenses | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Professional Profile Data |
| Practice locations and phone | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Practice Data |
| Primary practice, affiliations and health system | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Practice DataDmand AI Affiliation Data |
| Medicare services and procedure codes | Medicare Physician & Other Practitioners - by Provider and Service (CMS) (opens in a new tab) |
| State medians for the same specialty | Dmand AI Peer Benchmarks |
| Medicare patients and the all-payer patient panel | Dmand AI Patient Panel Data |
| Part D prescribing | Medicare Part D Prescribers - by Provider and Drug (CMS) (opens in a new tab)Medicare Part D Prescribers - by Provider (CMS) (opens in a new tab) |
| Publications, topics and co-authors | PubMed (National Library of Medicine) (opens in a new tab)Dmand AI Research Linkage |
| Clinical trials and co-investigators | Dmand AI Research LinkageClinicalTrials.gov (National Library of Medicine) (opens in a new tab) |
| Industry payments | Open Payments (CMS) (opens in a new tab) |
| Training, board certification and memberships | Dmand AI Professional Profile Data |
| Insurance carriers and plan types | Dmand AI Insurance Network Data |
| EHR at each practice site | Dmand AI Technology Install Data |
| Similar physicians | Dmand AI Affiliation Data |
Data last refreshed October 2026Report an inaccuracyRemove my information
FAQ
Frequently asked questions about Dr. William H. Isacoff
Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.
What is Dr. William H. Isacoff's NPI number?
Dr. William H. Isacoff's NPI number is 1891773123. It was assigned on January 6, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. William H. Isacoff?
Dr. William H. Isacoff is a hematologist and oncologist in West Hollywood, California. The primary specialty in the NPI Registry is Hematology & Oncology Physician (taxonomy code 207RH0003X).
Where does Dr. William H. Isacoff practice?
Dr. Isacoff practices at 8700 Beverly Blvd, West Hollywood, CA 90048. Dr. Isacoff's primary practice is Cedars-Sinai Medical Center in West Hollywood, California. Dmand AI also links Dr. Isacoff to 1 physician office and 1 group practice or clinic.
What is Dr. William H. Isacoff's office phone number?
The practice phone on file for Dr. Isacoff is (323) 866-8600.
What is Dr. William H. Isacoff's medical license number?
Dr. Isacoff's California license number on file is G24596.
What medical group is Dr. William H. Isacoff part of?
Dr. Isacoff is linked to Sarcoma Oncology Center.
Does Dr. William H. Isacoff accept Medicare?
Yes. CMS data shows Dr. Isacoff billed Medicare for 319 services in 2022.
Is Dr. William H. Isacoff board certified?
Yes. Dr. Isacoff is board certified in hematology by the American Board of Internal Medicine.
What services does Dr. William H. Isacoff bill to Medicare?
In 2022, Dr. Isacoff's most billed Medicare services were office visit, established patient (99214) and office visit, established patient (99215).
Where did Dr. William H. Isacoff go to medical school?
Dr. Isacoff graduated from New York Medical College in 1970.
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What drugs does Dr. William H. Isacoff prescribe most?
In 2024 Medicare Part D data, Dr. Isacoff's most prescribed drugs by claims were Creon, Granisetron HCl and Valacyclovir.
Has Dr. William H. Isacoff received payments from drug or device companies?
CMS Open Payments shows $110,937 in general payments to Dr. Isacoff from 66 companies from 2016 to 2025. The largest total came from Celgene Corporation.
How long has Dr. William H. Isacoff been practicing?
Dr. Isacoff graduated from medical school in 1970, 56 years ago.
Does Dr. William H. Isacoff do research?
Dmand AI links 16 publications to Dr. Isacoff, published from 2011 to 2022. Dr. Isacoff has worked on 1 clinical trial.
Who does Dr. William H. Isacoff publish with?
Dr. Isacoff's most frequent co-authors are Howard Albert Reber, MD (3 shared papers), James Samuel Tomlinson, MD (3 shared papers) and Graham W. Donald, MD (2 shared papers).
What insurance does Dr. William H. Isacoff accept?
Dr. Isacoff is in network with 5 carriers, including Aetna, Blue Cross Blue Shield of Massachusetts and HCSC. Medicare plans come from the most carriers, 5. Check the plan with the practice before a visit.
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