Adrien Jean-Harold Mazer, MD
Internal Medicine Physician · Washington, DC
Adrien Jean-Harold Mazer, MD is an internal medicine physician with a practice address in Washington, District of Columbia, and NPI 1013141522, issued on May 12, 2009. Check the license (District of Columbia MD039223, as entered in NPPES) on the District of Columbia Board of Medicine; the Medicare figures below come from public CMS files.
- Name
- Adrien Jean-Harold Mazer
- Credential
- MD
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- MD039223 DC
Self-reported in NPPES; status is on the state search - Practice location
- 2500 Wisconsin Ave NW, Washington, DC 20007
- Phone
- (202) 246-2387
- Enumerated
- May 12, 2009
- Record last updated
- Jun 28, 2012 (not updated in 14 years: call before relying on the address or phone)
- Medicare enrollment
- Enrolled (PECOS I20151015000579); accepts Medicare assignment
- Medical or professional school
- Georgetown University School Of Medicine, 2009
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 901 in District of Columbia → Look up another NPI →
Also registered at 2500 Wisconsin Ave NW
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Adrien Jean-Harold Mazer in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersDistrict of Columbia Board of Medicine
Search for license MD039223Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Industry payments in 2024: $38.81
1 payment: food and beverage; the largest payer was Abiomed. The 50,334 providers of this specialty with any payment received $1,303.06 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 2 group practices
- Luminis Health Medical Group, LLCAnnapolis, MD
- 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).
Adrien Jean-Harold Mazer among 901 internal medicine physician records in District of Columbia
Adrien Jean-Harold Mazer, MD is one of 901 internal medicine physician records with a practice address in District of Columbia. 73% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2009, is newer than 54% of them.
- NPI issued2009 · 54% of these records are older, 43% newer
- In a Medicare fileYes · 73% of these records are
- In the CMS Doctors and Clinicians fileYes · 57% of these records are
- Graduated2009 · median 2008 among the 513 with a school on file
- Record last updated2012 · 61% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207R00000X 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).
891 internal medicine physician records list a practice address in Washington
They are 891 of the 45,857 NPPES records with a practice address in Washington, and 901 internal medicine physician records in District of Columbia.
All 901 in District of Columbia → Every provider in Washington → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Amy BurkeWashington, DC 200071225036379
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- Michael DonnellyWashington, DC 200071225036296
- Priscilla FurthWashington, DC 200071366471245
- Jeanne Mandelblatt, MDWashington, DC 200071760481303
- Eileen MooreWashington, DC 200071053309427
- Dennis MurphyWashington, DC 200071679561930
- Chanigan Nilubol, M.D.Washington, DC 200071801844451
Common questions
What is Adrien Jean-Harold Mazer, MD's NPI number?
Adrien Jean-Harold Mazer, MD's National Provider Identifier (NPI) is 1013141522, issued on May 12, 2009. An NPI identifies a provider in billing; it is not a license.
Where is Adrien Jean-Harold Mazer, MD located?
The NPPES record lists a practice address at 2500 Wisconsin Ave NW, Washington, DC, 20007. Phone: (202) 246-2387. Providers update this record themselves, so call before visiting.
How can I verify Adrien Jean-Harold Mazer, MD's license?
NPPES lists District of Columbia license number MD039223, 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.
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.