John Wah, M.D.
Internal Medicine Physician · Westminster, MD
John Wah, M.D. is an internal medicine physician with a practice address in Westminster, Maryland, and NPI 1265727580, issued on Jun 15, 2011. Check the license (Maryland D0077578, as entered in NPPES) on the Maryland Board of Physicians; the Medicare figures below come from public CMS files.
- Name
- John Wah
- Credential
- M.D.
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- D0077578 MD
Self-reported in NPPES; status is on the state search - Practice location
- 77 E Main St Ste 215, Westminster, MD 21157
- Phone
- (410) 871-8104
- Enumerated
- Jun 15, 2011
- Record last updated
- Nov 12, 2025
- Medicaid ID
- 079467800 MD
- Medicare enrollment
- Enrolled (PECOS I20140804001071); accepts Medicare assignment
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 3,904 in Maryland → Look up another NPI →
Verify John Wah in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMaryland Board of Physicians
Search for license D0077578Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
48% more Medicare Part D claims than the average internal medicine physician in 2024
4,698 Medicare Part D claims for 160 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. 126 claims were for opioids.
Most prescribed
- Levothyroxine Sodium293 claims
- Atorvastatin Calcium264 claims
- Eliquis242 claims
- Furosemide184 claims
- Sertraline Hcl152 claims
- Metoprolol Tartrate108 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 MIPS final score for 2023 (Medicare payment program): 15 of 100
The Merit-based Incentive Payment System score is reported for this clinician. 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; category weights for 2023 (qpp.cms.gov).
Bills Medicare through one group practice
- Expanding Medicine LLCManchester, MD
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
John Wah among 3,904 internal medicine physician records in Maryland
John Wah, M.D. 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 2011, is newer than 67% of them.
- NPI issued2011 · 67% of these records are older, 31% newer
- In a Medicare fileYes · 77% of these records are
- In the CMS Doctors and Clinicians fileYes · 63% of these records are
- Graduated2011 · median 2003 among the 2,445 with a school on file
- 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).
27 internal medicine physician records list a practice address in Westminster
They are 27 of the 1,327 NPPES records with a practice address in Westminster, and 3,904 internal medicine physician records in Maryland.
All 3,904 in Maryland → Every provider in Westminster → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- John Abel, M.D.Westminster, MD 211571962461566
- Kamal Bangoria, M.D.Westminster, MD 211571417168675
- Desha Bedford, MDWestminster, MD 211571871571554
- Binu Chacko, M.D.Westminster, MD 211571598759557
- Khalil Freiji, M.D.Westminster, MD 211571598734402
- Thomas Galvin III, M.D.Westminster, MD 211571164415352
- Norman Goldstein, MDWestminster, MD 211571194731364
- Syed Hosain, M.D.Westminster, MD 211571548244759
Common questions
What is John Wah, M.D.'s NPI number?
John Wah, M.D.'s National Provider Identifier (NPI) is 1265727580, issued on Jun 15, 2011. An NPI identifies a provider in billing; it is not a license.
Where is John Wah, M.D. located?
The NPPES record lists a practice address at 77 E Main St Ste 215, Westminster, MD, 21157. Phone: (410) 871-8104. Providers update this record themselves, so call before visiting.
How can I verify John Wah, M.D.'s license?
NPPES lists Maryland license number D0077578, 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 John Wah, M.D. prescribe under Medicare Part D?
In 2024, John Wah, M.D. had 4,698 Medicare Part D claims for 160 beneficiaries; the average among internal medicine physician prescribers was 3,176. Part D covers Medicare prescriptions only.
What is John Wah, M.D.'s MIPS final score?
The 2023 MIPS final score is 15 of 100. 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.