Stephen Nathaniel Clay, MD
Internal Medicine Physician · Philadelphia, PA
Stephen Nathaniel Clay, MD is an internal medicine physician with a practice address in Philadelphia, Pennsylvania, and NPI 1710189444, issued on Jun 4, 2007. Check the license (Pennsylvania MD-045386-L, as entered in NPPES) on the Pennsylvania Department of State (PALS); the Medicare figures below come from public CMS files.
- Name
- Stephen Nathaniel Clay
- Credential
- MD
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- MD-045386-L PA
Self-reported in NPPES; status is on the state search - Practice location
- 1306 Spring Garden St, Philadelphia, PA 19123
- Phone
- (215) 238-2163
- Enumerated
- Jun 4, 2007
- Record last updated
- Jul 8, 2007 (not updated in 19 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 Stephen Nathaniel Clay in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersPennsylvania Department of State (PALS)
Search for license MD-045386-LCheck the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
99% fewer Medicare Part D claims than the average internal medicine physician in 2024
41 Medicare Part D claims, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. Brand-name drugs were 0% of claims. 14 claims were for opioids.
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.
Stephen Nathaniel Clay among 7,300 internal medicine physician records in Pennsylvania
Stephen Nathaniel Clay, MD 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. Its NPI, issued in 2007, is newer than 36% of them.
- NPI issued2007 · 36% of these records are older, 57% newer
- In a Medicare fileYes · 78% of these records are
- In the CMS Doctors and Clinicians fileNo · 58% of these records are
- Record last updated2007 · 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.
All 7,300 in Pennsylvania → Every provider in Philadelphia → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Joan Beckwith, M.D.Philadelphia, PA 191231366453508
- Ada Canino, M.D.Philadelphia, PA 191231306858360
- Christina Evans, MD, MPHPhiladelphia, PA 191231063909463
- Jane Fritz, M.D.Philadelphia, PA 191231902020266
- Yelena Galkin, M.D.Philadelphia, PA 191231457363723
- Qadar Khan, M.D.Philadelphia, PA 191231629137666
- Hannah Lampert, MDPhiladelphia, PA 191231275117210
- Lisa Maslankowski, MDPhiladelphia, PA 191231750300240
Common questions
What is Stephen Nathaniel Clay, MD's NPI number?
Stephen Nathaniel Clay, MD's National Provider Identifier (NPI) is 1710189444, issued on Jun 4, 2007. An NPI identifies a provider in billing; it is not a license.
Where is Stephen Nathaniel Clay, MD located?
The NPPES record lists a practice address at 1306 Spring Garden St, Philadelphia, PA, 19123. Phone: (215) 238-2163. Providers update this record themselves, so call before visiting.
How can I verify Stephen Nathaniel Clay, MD's license?
NPPES lists Pennsylvania license number MD-045386-L, 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.
How much does Stephen Nathaniel Clay, MD prescribe under Medicare Part D?
In 2024, Stephen Nathaniel Clay, MD had 41 Medicare Part D claims; 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.