Claudine Isaacs
Hematology & Oncology Physician · Washington, DC
Claudine Isaacs is a hematology & oncology physician with a practice address in Washington, District of Columbia, and NPI 1164414751, issued on Aug 19, 2005. Check the license (District of Columbia 20270, as entered in NPPES) on the District of Columbia Board of Medicine; the Medicare figures below come from public CMS files.
- Name
- Claudine Isaacs
- Primary taxonomy
- Hematology & Oncology Physician 207RH0003X
- License number
- 20270 DC
Self-reported in NPPES; status is on the state search - Practice location
- 3800 Reservoir RD NW, Washington, DC 20007
- Phone
- (202) 444-3677
- Enumerated
- Aug 19, 2005
- Record last updated
- Oct 24, 2007 (not updated in 19 years: call before relying on the address or phone)
- Medicare enrollment
- Enrolled (PECOS I20100503000718); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest hematology & oncology physician records → All 81 in District of Columbia → Look up another NPI →
Also registered at 3800 Reservoir RD NW
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Claudine Isaacs in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersDistrict of Columbia Board of Medicine
Search for license 20270Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
93% fewer Medicare Part D claims than the average hematology & oncology physician in 2024
58 Medicare Part D claims for 28 beneficiaries, against an average of 877 among the 10,784 providers of this specialty who prescribed in Part D.
Most prescribed
- Letrozole23 claims
- Anastrozole18 claims
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
The practice group's MIPS final score for 2023 (Medicare payment program): 79.1 of 100
The Merit-based Incentive Payment System score is reported for the practice group, not for one clinician alone. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.
Source: CMS Quality Payment Program, MIPS performance year 2023, group reporting; category weights for 2023 (qpp.cms.gov).
Industry payments in 2024: $23,155.86
16 payments; by number, the most common kind was consulting fee; the largest payer was Genentech USA, Inc. The 8,560 providers of this specialty with any payment received $7,481.41 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Bills Medicare through one group practice
- Medstar Medical Group II LLCWashington, DC
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Claudine Isaacs among 81 hematology & oncology physician records in District of Columbia
Claudine Isaacs is one of 81 hematology & oncology physician records with a practice address in District of Columbia. 74% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2005, is newer than 0% of them.
- NPI issued2005 · 0% of these records are older, 88% newer
- In a Medicare fileYes · 74% of these records are
- In the CMS Doctors and Clinicians fileYes · 57% of these records are
- Graduated1987 · median 2002 among the 46 with a school on file
- Record last updated2007 · 70% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RH0003X and a District of Columbia practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Hematology & Oncology Physician providers in District of Columbia
There are 81 hematology & oncology physician records in District of Columbia.
All 81 in District of Columbia → Every provider in Washington → Hematology & Oncology Physician nationwide →
The 8 hematology & oncology physician records with the nearest ZIP codes
- Ekatherine AsatianiWashington, DC 200071639177736
- Ami Chitalia, M.D.Washington, DC 200071083939102
- Julia Cunningham, M.D.Washington, DC 200071487949335
- Ann Gramza, M.D.Washington, DC 200071760690069
- Amy HankinWashington, DC 200071861424434
- Susan Honig, M.D.Washington, DC 200071184841330
- Jane InghamWashington, DC 200071396721528
- Craig KesslerWashington, DC 200071356340517
Common questions
What is Claudine Isaacs's NPI number?
Claudine Isaacs's National Provider Identifier (NPI) is 1164414751, issued on Aug 19, 2005. An NPI identifies a provider in billing; it is not a license.
Where is Claudine Isaacs located?
The NPPES record lists a practice address at 3800 Reservoir RD NW, Washington, DC, 20007. Phone: (202) 444-3677. Providers update this record themselves, so call before visiting.
How can I verify Claudine Isaacs's license?
NPPES lists District of Columbia license number 20270, as entered by the provider. Search the District of Columbia Board of Medicine at https://dchealth.dc.gov/bomed. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Claudine Isaacs prescribe under Medicare Part D?
In 2024, Claudine Isaacs had 58 Medicare Part D claims for 28 beneficiaries; the average among hematology & oncology physician prescribers was 877. Part D covers Medicare prescriptions only.
What is Claudine Isaacs's MIPS final score?
The 2023 MIPS final score is 79.1 of 100, reported for the practice group. The average among 454,083 clinicians with a measured score was 83.5.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.