Matthew Ian Fellows, M.D.
Family Medicine Physician · Philadelphia, PA
Matthew Ian Fellows, M.D. is a family medicine physician with a practice address in Philadelphia, Pennsylvania, and NPI 1679894372, issued on Jun 16, 2010. Check the license (Pennsylvania MD448251, as entered in NPPES) on the Pennsylvania Department of State (PALS); the Medicare figures below come from public CMS files.
- Name
- Matthew Ian Fellows
- Credential
- M.D.
- Primary taxonomy
- Family Medicine Physician 207Q00000X
- License number
- MD448251 PA
Self-reported in NPPES; status is on the state search - Practice location
- 809 Locust St, Philadelphia, PA 19107
- Phone
- (215) 563-0658
- Enumerated
- Jun 16, 2010
- Record last updated
- Dec 22, 2021 (not updated in 5 years: call before relying on the address or phone)
- Medicare enrollment
- Enrolled (PECOS I20180720001412); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest family medicine physician records → All 7,483 in Pennsylvania → Look up another NPI →
Also registered at 809 Locust St
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Caroline Cylkowski, C.R.N.P.Adult Health Nurse Practitioner1457688624
- Maxwell Parrish, C.R.N.P.Family Nurse Practitioner1528387255
- Hilary Rosenstein, MDFamily Medicine Physician1063799351
Verify Matthew Ian Fellows in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersPennsylvania Department of State (PALS)
Search for license MD448251Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
9% fewer Medicare Part D claims than the average family medicine physician in 2024
3,233 Medicare Part D claims for 281 beneficiaries, against an average of 3,544 among the 117,163 providers of this specialty who prescribed in Part D. Brand-name drugs were 10% of claims. 36 claims were for opioids.
Most prescribed
- Atorvastatin Calcium279 claims
- Lisinopril135 claims
- Amlodipine Besylate93 claims
- Terazosin Hcl87 claims
- Rosuvastatin Calcium84 claims
- Gabapentin83 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
- Permanente Medical Group IncSan Francisco, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Matthew Ian Fellows among 7,483 family medicine physician records in Pennsylvania
Matthew Ian Fellows, M.D. is one of 7,483 family medicine physician records with a practice address in Pennsylvania. 79% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2010, is newer than 60% of them.
- NPI issued2010 · 60% of these records are older, 38% newer
- In a Medicare fileYes · 79% of these records are
- In the CMS Doctors and Clinicians fileYes · 61% of these records are
- Graduated2010 · median 2005 among the 4,529 with a school on file
- Record last updated2021 · 58% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207Q00000X and a Pennsylvania practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
800 family medicine physician records list a practice address in Philadelphia
They are 800 of the 42,849 NPPES records with a practice address in Philadelphia, and 7,483 family medicine physician records in Pennsylvania.
All 7,483 in Pennsylvania → Every provider in Philadelphia → Family Medicine Physician nationwide →
The 8 family medicine physician records with the nearest ZIP codes
- Christine Arenson, M.D.Philadelphia, PA 191071316970403
- Joshua Barash, M.D.Philadelphia, PA 191071205861499
- George Bradford, M.D.Philadelphia, PA 191071558330324
- Christopher Chambers, M.D.Philadelphia, PA 191071528084050
- Kristin Desimone, M.D.Philadelphia, PA 191071477586501
- Victor Diaz, M.D.Philadelphia, PA 191071013933548
- Anne Dubreuil, M.D.Philadelphia, PA 191071588680003
- Dorothy Fojtik, M.D.Philadelphia, PA 191071720012727
Common questions
What is Matthew Ian Fellows, M.D.'s NPI number?
Matthew Ian Fellows, M.D.'s National Provider Identifier (NPI) is 1679894372, issued on Jun 16, 2010. An NPI identifies a provider in billing; it is not a license.
Where is Matthew Ian Fellows, M.D. located?
The NPPES record lists a practice address at 809 Locust St, Philadelphia, PA, 19107. Phone: (215) 563-0658. Providers update this record themselves, so call before visiting.
How can I verify Matthew Ian Fellows, M.D.'s license?
NPPES lists Pennsylvania license number MD448251, 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 Matthew Ian Fellows, M.D. prescribe under Medicare Part D?
In 2024, Matthew Ian Fellows, M.D. had 3,233 Medicare Part D claims for 281 beneficiaries; the average among family medicine physician prescribers was 3,544. 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.