NPPES file of Aug 9, 2026

John Reefer, M.D.

Internal Medicine Physician · Butler, PA

John Reefer, M.D. is an internal medicine physician with a practice address in Butler, Pennsylvania, and NPI 1093743304, issued on Jun 28, 2006. Check the license (Pennsylvania MD021615E, as entered in NPPES) on the Pennsylvania Department of State (PALS); the federal record below is the public data PlainDoctor holds for this provider.

Record from CMS NPPES, file of Aug 9, 2026 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1093743304
Name
John Reefer
Credential
M.D.
Primary taxonomy
Internal Medicine Physician 207R00000X
License number
MD021615E PA
Self-reported in NPPES; status is on the state search
Practice location
480 E Jefferson St, Butler, PA 16001
Phone
(727) 285-0870
Enumerated
Jun 28, 2006
Record last updated
Aug 19, 2011 (not updated in 15 years: call before relying on the address or phone)
Fax
(724) 283-3887
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). A record is not a license: verify it with the state board.
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8 nearest internal medicine physician records → All 7,300 in Pennsylvania → Look up another NPI →

Also registered at 480 E Jefferson St

A shared address usually means a shared clinic or building; it does not show who employs whom.

  1. Joseph Ammerman, FNPFamily Nurse Practitioner1780259267
  2. Jessica Buriak, D.O.Internal Medicine Physician1134417801
  3. Stephen Campanella, MDSpecialist1609875905
  4. William Dicuccio, MDGeriatric Medicine (Family Medicine) Physician1306837646
  5. William Dicuccio, MDFamily Medicine Physician1487636403
  6. Allison Dix, PACPhysician Assistant1609846716

Verify John Reefer in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersPennsylvania Department of State (PALS)
    Search for license MD021615E    Check the board
  3. 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
  4. 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
  5. 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Open the Pennsylvania license search

PlainDoctor does not match the HHS-OIG exclusion list to individual records: most entries carry no NPI. Search the OIG exclusion list by name.

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John Reefer among 7,300 internal medicine physician records in Pennsylvania

John Reefer, M.D. 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 not. Its NPI, issued in 2006, is newer than 9% of them.

  • NPI issued2006 · 9% of these records are older, 64% newer
  • In a Medicare fileNo · 78% of these records are
  • In the CMS Doctors and Clinicians fileNo · 58% of these records are
  • Record last updated2011 · 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).

43 internal medicine physician records list a practice address in Butler

They are 43 of the 1,139 NPPES records with a practice address in Butler, and 7,300 internal medicine physician records in Pennsylvania. No Medicare prescribing, quality score, industry payment or hospital affiliation is published for this NPI.

All 7,300 in Pennsylvania → Every provider in Butler → Internal Medicine Physician nationwide →

The 8 internal medicine physician records with the nearest ZIP codes

  1. Weien Agate, M.D.Butler, PA 160011982670691
  2. Fozia Chatta, M.D.Butler, PA 160011659309953
  3. Dennis Demby, M.D.Butler, PA 160011780612523
  4. Padmarao Jevaji, MD, MMPHButler, PA 160011609807296
  5. Lillian Jordan, MDButler, PA 160011235154295
  6. James Mathews, DOButler, PA 160011477523140
  7. Varsha Mehta, M.D.Butler, PA 160011760413108
  8. John Rocchi, MDButler, PA 160011306837091

Common questions

What is John Reefer, M.D.'s NPI number?

John Reefer, M.D.'s National Provider Identifier (NPI) is 1093743304, issued on Jun 28, 2006. An NPI identifies a provider in billing; it is not a license.

Where is John Reefer, M.D. located?

The NPPES record lists a practice address at 480 E Jefferson St, Butler, PA, 16001. Phone: (727) 285-0870. Providers update this record themselves, so call before visiting.

How can I verify John Reefer, M.D.'s license?

NPPES lists Pennsylvania license number MD021615E, 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.

Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. An NPI identifies who bills; it is not a license.

Written with AI tools from the named public files; every figure is computed from those files (how it is made).

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.