Joan E. Diegel, M.D.
Internal Medicine Physician · Pittsburgh, PA
Joan E. Diegel, M.D. is an internal medicine physician with a practice address in Pittsburgh, Pennsylvania, and NPI 1073798559, issued on Jan 3, 2008. Check the license (Pennsylvania MD047991-L, as entered in NPPES) on the Pennsylvania Department of State (PALS); the Medicare figures below come from public CMS files.
- Name
- Joan E. Diegel
- Credential
- M.D.
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- MD047991-L PA
Self-reported in NPPES; status is on the state search - Practice location
- 7227 Hamilton Ave, Pittsburgh, PA 15208
- Phone
- (412) 244-4700
- Enumerated
- Jan 3, 2008
- Record last updated
- Dec 8, 2011 (not updated in 15 years: call before relying on the address or phone)
- Fax
- (412) 244-4992
- Medicare enrollment
- Enrolled (PECOS I20050217000147); accepts Medicare assignment
- Medical or professional school
- George Washington University School Of Medicine, 1984
- Entity
- Type 1 · individual
Also registered at 7227 Hamilton Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Swaroopa Anugula, MDPediatrics Physician1780940601
- Felicia Beseka, M.D.Family Medicine Physician1225268121
- Lizzi BphmPharmacist1306917984
- Lynn BurtonCounselor1194610709
- Christopher Conti, MDEmergency Medicine Physician1912070988
- Gregory Dischman, MDLegal Medicine1336180728
Verify Joan E. Diegel in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersPennsylvania Department of State (PALS)
Search for license MD047991-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
30% fewer Medicare Part D claims than the average internal medicine physician in 2024
2,210 Medicare Part D claims for 133 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. 38 claims were for opioids.
Most prescribed
- Amlodipine Besylate295 claims
- Atorvastatin Calcium274 claims
- Metformin Hcl94 claims
- Lisinopril88 claims
- Losartan Potassium72 claims
- Ozempic64 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.
Bills Medicare through one group practice
- Primary Care Health Services, Inc.Pittsburgh, PA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
750 internal medicine physician records list a practice address in Pittsburgh
They are 750 of the 28,866 NPPES records with a practice address in Pittsburgh, and 7,300 internal medicine physician records in Pennsylvania.
All 750 in Pittsburgh → All 7,300 in Pennsylvania → Every provider in Pittsburgh →
Other internal medicine physician records in Pennsylvania
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- John Aaron, MDWest Grove, PA1427094531
- Todd Aaron, MDPhiladelphia, PA1457350522
- Joseph Abalos, M.D.Seneca, PA1215128434
- Mubasher Abbas, MDYork, PA1578978425
- Nicholas AbbottFarrell, PA1639525678
- Sara Abbruzzi, D.O.Philadelphia, PA1689686313
- Ahmad Abdalla, MDPhiladelphia, PA1730981127
- Tori Abdalla, DOPhiladelphia, PA1942091699
- Hany Abdel, D.O.Plymouth Meeting, PA1164467262
Common questions
What is Joan E. Diegel, M.D.'s NPI number?
Joan E. Diegel, M.D.'s National Provider Identifier (NPI) is 1073798559, issued on Jan 3, 2008. An NPI identifies a provider in billing; it is not a license.
Where is Joan E. Diegel, M.D. located?
The NPPES record lists a practice address at 7227 Hamilton Ave, Pittsburgh, PA, 15208. Phone: (412) 244-4700. Providers update this record themselves, so call before visiting.
How can I verify Joan E. Diegel, M.D.'s license?
NPPES lists Pennsylvania license number MD047991-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 Joan E. Diegel, M.D. prescribe under Medicare Part D?
In 2024, Joan E. Diegel, M.D. had 2,210 Medicare Part D claims for 133 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.