Frederick M. Fellin, MD
Hematology & Oncology Physician · Philadelphia, PA
Frederick M. Fellin, MD is a hematology & oncology physician with a practice address in Philadelphia, Pennsylvania, and NPI 1679684476, issued on Aug 31, 2006. Check the license (Pennsylvania MD025210E, as entered in NPPES) on the Pennsylvania Department of State (PALS); the Medicare figures below come from public CMS files.
- Name
- Frederick M. Fellin
- Credential
- MD
- Primary taxonomy
- Hematology & Oncology Physician 207RH0003X
- License number
- MD025210E PA
Self-reported in NPPES; status is on the state search - Practice location
- 925 Chestnut Street, Philadelphia, PA 19107
- Phone
- (215) 955-8874
- Enumerated
- Aug 31, 2006
- Record last updated
- Feb 15, 2013 (not updated in 13 years: call before relying on the address or phone)
- Medicaid IDs
- 007005116 PA
0311955 NJ - Medicare enrollment
- Enrolled (PECOS I20100927001240); accepts Medicare assignment
- Medical or professional school
- Jefferson Medical College Of Thomas Jefferson University, 1979
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest hematology & oncology physician records → All 784 in Pennsylvania → Look up another NPI →
Also registered at 925 Chestnut Street
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Tiffany Avery, M.D.Medical Oncology Physician1710193982
- Katelyn Clancy, CRNPGerontology Nurse Practitioner1790183945
- Ira Cohen, MDCardiovascular Disease Physician1972508539
- Alexandra Costlow, AUDAudiologist-Hearing Aid Fitter1043640592
- Daniel Eun, M.D.Urology Physician1639375173
- Eitan Frankel, MDCardiovascular Disease Physician1659805620
Verify Frederick M. Fellin in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersPennsylvania Department of State (PALS)
Search for license MD025210ECheck the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
14% fewer Medicare Part D claims than the average hematology & oncology physician in 2024
757 Medicare Part D claims for 168 beneficiaries, against an average of 877 among the 10,784 providers of this specialty who prescribed in Part D. Brand-name drugs were 32% of claims. 45 claims were for opioids.
Most prescribed
- Anastrozole144 claims
- Ibrance66 claims
- Tamoxifen Citrate41 claims
- Imbruvica36 claims
- Tagrisso35 claims
- Exemestane32 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 3 group practices
- Abington Memorial HospitalWillow Grove, PA
- Jefferson University PhysiciansPhiladelphia, PA
- Novacare Outpatient Rehabilitation East, Inc.Collegeville, PA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Frederick M. Fellin among 784 hematology & oncology physician records in Pennsylvania
Frederick M. Fellin, MD is one of 784 hematology & 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 2006, is newer than 13% of them.
- NPI issued2006 · 13% of these records are older, 55% newer
- In a Medicare fileYes · 83% of these records are
- In the CMS Doctors and Clinicians fileYes · 71% of these records are
- Graduated1979 · median 2004 among the 553 with a school on file
- Record last updated2013 · 60% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RH0003X and a Pennsylvania practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Hematology & Oncology Physician providers in Pennsylvania
There are 784 hematology & oncology physician records in Pennsylvania.
All 784 in Pennsylvania → Every provider in Philadelphia → Hematology & Oncology Physician nationwide →
The 8 hematology & oncology physician records with the nearest ZIP codes
- Anjali Avadhani, MDPhiladelphia, PA 191071194887059
- Andrew Chapman, DOPhiladelphia, PA 191071306913033
- Rodwige Desnoyers, M.D.Philadelphia, PA 191071326159021
- Thomas Klumpp, MDPhiladelphia, PA 191071194713271
- Bijoyesh Mookerjee, M.D.Philadelphia, PA 191071407836083
- Pierluigi Porcu, M.D.Philadelphia, PA 191071376551564
- Lewis Rose, MDPhiladelphia, PA 191071407923113
- Rene Rubin, MDPhiladelphia, PA 191071285633016
Common questions
What is Frederick M. Fellin, MD's NPI number?
Frederick M. Fellin, MD's National Provider Identifier (NPI) is 1679684476, issued on Aug 31, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Frederick M. Fellin, MD located?
The NPPES record lists a practice address at 925 Chestnut Street, Philadelphia, PA, 19107. Phone: (215) 955-8874. Providers update this record themselves, so call before visiting.
How can I verify Frederick M. Fellin, MD's license?
NPPES lists Pennsylvania license number MD025210E, 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 Frederick M. Fellin, MD prescribe under Medicare Part D?
In 2024, Frederick M. Fellin, MD had 757 Medicare Part D claims for 168 beneficiaries; the average among hematology & oncology physician prescribers was 877. 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.