Walter H. Tsou, MD, MPH
Internal Medicine Physician · Philadelphia, PA
Walter H. Tsou, MD, MPH is an internal medicine physician with a practice address in Philadelphia, Pennsylvania, and NPI 1538486733, issued on Apr 27, 2010. Check the license (Pennsylvania MD-022587E, as entered in NPPES) on the Pennsylvania Department of State (PALS); the federal record below is the public data PlainDoctor holds for this provider.
- Name
- Walter H. Tsou
- Credential
- MD, MPH
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- MD-022587E PA
Self-reported in NPPES; status is on the state search - Practice location
- 325 E Durham St, Philadelphia, PA 19119
- Phone
- (215) 242-6272
- Enumerated
- Apr 27, 2010
- Record last updated
- Apr 27, 2010 (not updated in 16 years: call before relying on the address or phone)
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 7,300 in Pennsylvania → Look up another NPI →
Verify Walter H. Tsou in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersPennsylvania Department of State (PALS)
Search for license MD-022587ECheck the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Walter H. Tsou among 7,300 internal medicine physician records in Pennsylvania
Walter H. Tsou, MD, MPH is one of 7,300 internal medicine physician records with a practice address in Pennsylvania. 78% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does not. Its NPI, issued in 2010, is newer than 50% of them.
- NPI issued2010 · 50% of these records are older, 48% newer
- In a Medicare fileNo · 78% of these records are
- In the CMS Doctors and Clinicians fileNo · 58% of these records are
- Record last updated2010 · 56% 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 Pennsylvania practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
1,855 internal medicine physician records list a practice address in Philadelphia
They are 1,855 of the 42,849 NPPES records with a practice address in Philadelphia, and 7,300 internal medicine physician records in Pennsylvania. No Medicare prescribing, quality score, industry payment or hospital affiliation is published for this NPI.
All 7,300 in Pennsylvania → Every provider in Philadelphia → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Elizabeth Fabens, MDPhiladelphia, PA 191191053380923
- Mohanad Fallouh, M.D.Philadelphia, PA 191191619915527
- Mark Feinberg, MD, PHDPhiladelphia, PA 191191851019236
- Ellen Feld, M.D.Philadelphia, PA 191191912115981
- Shyrelle Gardner, M.D.Philadelphia, PA 191191710948609
- William Laury, M.D.Philadelphia, PA 191191407802697
- Todd Aaron, MDPhiladelphia, PA 191181457350522
- Mushtaq Ahmad, MDPhiladelphia, PA 191201932148723
Common questions
What is Walter H. Tsou, MD, MPH's NPI number?
Walter H. Tsou, MD, MPH's National Provider Identifier (NPI) is 1538486733, issued on Apr 27, 2010. An NPI identifies a provider in billing; it is not a license.
Where is Walter H. Tsou, MD, MPH located?
The NPPES record lists a practice address at 325 E Durham St, Philadelphia, PA, 19119. Phone: (215) 242-6272. Providers update this record themselves, so call before visiting.
How can I verify Walter H. Tsou, MD, MPH's license?
NPPES lists Pennsylvania license number MD-022587E, as entered by the provider. Search the Pennsylvania Department of State (PALS) at https://www.pals.pa.gov/. 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. 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.