Seyfettin Onder Alpdogan, MD
Medical Oncology Physician · Philadelphia, PA
Seyfettin Onder Alpdogan, MD is a medical oncology physician with a practice address in Philadelphia, Pennsylvania, and NPI 1558538991, issued on May 14, 2008. Check the license (Pennsylvania MD437524, as entered in NPPES) on the Pennsylvania Department of State (PALS); the Medicare figures below come from public CMS files.
- Name
- Seyfettin Onder Alpdogan
- Credential
- MD
- Primary taxonomy
- Medical Oncology Physician 207RX0202X
- License number
- MD437524 PA
Self-reported in NPPES; status is on the state search - Practice location
- 925 Chestnut St, Philadelphia, PA 19107
- Phone
- (215) 955-8874
- Enumerated
- May 14, 2008
- Record last updated
- Mar 6, 2012 (not updated in 14 years: call before relying on the address or phone)
- Fax
- (215) 955-2340
- Medicaid IDs
- 0200450 NJ
102333190 PA - Medicare enrollment
- Enrolled (PECOS I20090804000078); accepts Medicare assignment
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest medical oncology physician records → All 265 in Pennsylvania → Look up another NPI →
Also registered at 925 Chestnut St
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Maysa Abu-Khalaf, MDMedical Oncology Physician1194713495
- Asim AhmedStudent in an Organized Health Care Education/Training Program1669319059
- Anjali Avadhani, MDHematology & Oncology Physician1194887059
- Rita Axelrod, M.D.Medical Oncology Physician1881616126
- Donald Beahm, MDOtolaryngology Physician1245423714
- Barbara Bender, RD LDNRegistered Dietitian1487971917
Verify Seyfettin Onder Alpdogan in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersPennsylvania Department of State (PALS)
Search for license MD437524Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
85% fewer Medicare Part D claims than the average medical oncology physician in 2024
104 Medicare Part D claims for 26 beneficiaries, against an average of 703 among the 4,230 providers of this specialty who prescribed in Part D.
Most prescribed
- Ondansetron Hcl16 claims
- Prochlorperazine Maleate15 claims
- Valacyclovir14 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
- Jefferson University PhysiciansPhiladelphia, PA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Seyfettin Onder Alpdogan among 265 medical oncology physician records in Pennsylvania
Seyfettin Onder Alpdogan, MD is one of 265 medical oncology physician records with a practice address in Pennsylvania. 83% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2008, is newer than 60% of them.
- NPI issued2008 · 60% of these records are older, 31% newer
- In a Medicare fileYes · 83% of these records are
- In the CMS Doctors and Clinicians fileYes · 71% of these records are
- Graduated1983 · median 2002 among the 189 with a school on file
- Record last updated2012 · 68% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RX0202X and a Pennsylvania practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Medical Oncology Physician providers in Pennsylvania
There are 265 medical oncology physician records in Pennsylvania.
All 265 in Pennsylvania → Every provider in Philadelphia → Medical Oncology Physician nationwide →
The 8 medical oncology physician records with the nearest ZIP codes
- Maysa Abu-Khalaf, MDPhiladelphia, PA 191071194713495
- Rita Axelrod, M.D.Philadelphia, PA 191071881616126
- David Berd, M.D.Philadelphia, PA 191071861414195
- Emmanuel Besa, M.D.Philadelphia, PA 191071114947967
- Barbara Campling, MDPhiladelphia, PA 191071508807983
- Matthew Carabasi, M.D.Philadelphia, PA 191071255351003
- Brian Carr, MDPhiladelphia, PA 191071831161785
- Joanne Filicko-O'Hara, M.D.Philadelphia, PA 191071801818141
Common questions
What is Seyfettin Onder Alpdogan, MD's NPI number?
Seyfettin Onder Alpdogan, MD's National Provider Identifier (NPI) is 1558538991, issued on May 14, 2008. An NPI identifies a provider in billing; it is not a license.
Where is Seyfettin Onder Alpdogan, MD located?
The NPPES record lists a practice address at 925 Chestnut St, Philadelphia, PA, 19107. Phone: (215) 955-8874. Providers update this record themselves, so call before visiting.
How can I verify Seyfettin Onder Alpdogan, MD's license?
NPPES lists Pennsylvania license number MD437524, 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 Seyfettin Onder Alpdogan, MD prescribe under Medicare Part D?
In 2024, Seyfettin Onder Alpdogan, MD had 104 Medicare Part D claims for 26 beneficiaries; the average among medical oncology physician prescribers was 703. 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.