Max An
Internal Medicine Physician · Baltimore, MD
Max An is an internal medicine physician with a practice address in Baltimore, Maryland, and NPI 1194345413, issued on Apr 17, 2020. Check the license (Maryland D0100052, as entered in NPPES) on the Maryland Board of Physicians; the Medicare figures below come from public CMS files.
- Name
- Max An
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- D0100052 MD
Self-reported in NPPES; status is on the state search - Practice location
- 22 S Greene St, Baltimore, MD 21201
- Phone
- (410) 328-8667
- Enumerated
- Apr 17, 2020
- Record last updated
- Feb 7, 2025
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 3,904 in Maryland → Look up another NPI →
Also registered at 22 S Greene St
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Bizhan Aarabi, MDNeurological Surgery Physician1174578876
- Elsadig Abdalla, MDStudent in an Organized Health Care Education/Training Program1073364477
- Ehssan AbdolalizadehStudent in an Organized Health Care Education/Training Program1093653271
- Mohammad Abdulelah, MDStudent in an Organized Health Care Education/Training Program1114650108
- Leenah AbdulgaderStudent in an Organized Health Care Education/Training Program1386323301
- Ifedayo Abiola-Matthew, CRNPAcute Care Nurse Practitioner1033781117
Verify Max An in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMaryland Board of Physicians
Search for license D0100052Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
96% fewer Medicare Part D claims than the average internal medicine physician in 2024
129 Medicare Part D claims for 31 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. Brand-name drugs were 17% of claims.
Most prescribed
- Amlodipine Besylate16 claims
- Lisinopril12 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.
Max An among 3,904 internal medicine physician records in Maryland
Max An is one of 3,904 internal medicine physician records with a practice address in Maryland. 77% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2020, is newer than 89% of them.
- NPI issued2020 · 89% of these records are older, 8% newer
- In a Medicare fileYes · 77% of these records are
- In the CMS Doctors and Clinicians fileNo · 63% of these records are
- Record last updated2025 · 59% 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 Maryland practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
1,278 internal medicine physician records list a practice address in Baltimore
They are 1,278 of the 35,183 NPPES records with a practice address in Baltimore, and 3,904 internal medicine physician records in Maryland.
All 3,904 in Maryland → Every provider in Baltimore → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Azra Ahmed, M.D.Baltimore, MD 212011326014788
- Clifford Amend, M.D.Baltimore, MD 212011245235068
- Kirk Chan-Tack, M.D.Baltimore, MD 212011326004268
- Kenneth Geh, MDBaltimore, MD 212011396718755
- Sungyon Jang, M.D.Baltimore, MD 212011477519304
- Marcia Kane, MDBaltimore, MD 212011770564254
- Mien-Door KiouneBaltimore, MD 212011104892207
- Frederick Kotler, M.D.Baltimore, MD 212011356304216
Common questions
What is Max An's NPI number?
Max An's National Provider Identifier (NPI) is 1194345413, issued on Apr 17, 2020. An NPI identifies a provider in billing; it is not a license.
Where is Max An located?
The NPPES record lists a practice address at 22 S Greene St, Baltimore, MD, 21201. Phone: (410) 328-8667. Providers update this record themselves, so call before visiting.
How can I verify Max An's license?
NPPES lists Maryland license number D0100052, as entered by the provider. Search the Maryland Board of Physicians at https://www.mbp.state.md.us/. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Max An prescribe under Medicare Part D?
In 2024, Max An had 129 Medicare Part D claims for 31 beneficiaries; the average among internal medicine physician prescribers was 3,176. Part D covers Medicare prescriptions only.
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.