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Internal Medicine

John M. Ferretti, DO

Works at hospitals in Corry, PA · Erie, PA · Pennsylvania

Summary

John M. Ferretti, DO (Internal Medicine) is listed by Medicare at 4 hospitals in Corry, PA and Erie, PA. NPI 1477518777. Medicare data says the clinician accepts Medicare assignment. Source: CMS Facility Affiliation Data, updated 2026-10-02.

From official Medicare data

This page shows what Medicare's official clinician data says about John M. Ferretti, joined by NPI number (data updated 2026-10-02). It is not a recommendation or a rating. Call the office or hospital to confirm before you go.

In a medical emergency, call 911.

At a glance

Internal MedicinePrimary specialty
YesAccepts Medicare assignment
53Years since medical school (graduated 1973)
Philadelphia College Of Osteopathic MedicineMedical school
MaleGender (as listed)
Osteopathic Internal Medicine Associates Inc.Group practice

Quick answers

Which hospitals does John M. Ferretti work at?
Medicare's official clinician data lists John M. Ferretti at 4 hospitals: Lecom Health Corry Memorial Hospital, Lecom Medical Center and Behavioral Health Pav, Saint Vincent Hospital and UPMC Hamot. This is where the clinician works or has privileges; call the hospital to confirm.
Where does John M. Ferretti see patients?
Medicare's clinician data lists 1 practice location in Erie, PA. Call before your visit to confirm the address.
What is John M. Ferretti's specialty?
Medicare lists Internal Medicine as the primary specialty, and also Geriatric Medicine and Osteopathic Manipulative Medicine.
Does John M. Ferretti accept Medicare assignment?
Yes. Medicare's clinician data says John M. Ferretti accepts Medicare assignment (the Medicare-approved amount as full payment for covered services), as of 2026-10-02. Ask the office to confirm before your visit.
What is the phone number for John M. Ferretti?
(814) 868-5481, as listed in official Medicare / NPI Registry data.
What is John M. Ferretti's NPI number?
1477518777. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.

Hospitals where John M. Ferretti works

Medicare's Facility Affiliation Data lists John M. Ferretti at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.

Practice locations

Addresses where John M. Ferretti is enrolled with Medicare (CMS data updated 2026-10-02).

Group practices

Medicare enrollment lists John M. Ferretti as a member of this group (CMS data updated 2026-10-02).

  • Osteopathic Internal Medicine Associates Inc.4 clinicians in the group

Specialties

Find other Internal Medicine doctors in Pennsylvania →

Other internal medicine doctors in Erie

Clinicians with the same Medicare primary specialty in Erie, PA — not a recommendation.

All internal medicine doctors in Erie →

Clinician information

CredentialDO
Medical schoolPhiladelphia College Of Osteopathic Medicine
Graduation year1973
Gender (as listed)Male
Medicare assignmentAccepts (Medicare-approved amount as full payment)
NPI (National Provider Identifier)1477518777
CorrectionsReport an error or suggest an update →

Most corrections must be made at the source: clinicians update their NPI Registry record (NPPES) and their Medicare enrollment (PECOS); this page follows the next data release.

Sources

  1. Facility Affiliation Data — Centers for Medicare & Medicaid Services (CMS), data updated 2026-10-02, retrieved 2026-10-29
  2. National Downloadable File (Doctors and Clinicians) — CMS, data updated 2026-10-02, retrieved 2026-10-29
  3. NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
  4. Medicare Care Compare — official Medicare tool to look up clinicians