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Gastroenterology

Nasser Hajar, MD

Works at hospitals in Oregon, OH · Fremont, OH · Adrian, MI … · Ohio, Michigan

Summary

Nasser Hajar, MD (Gastroenterology) is listed by Medicare at 5 hospitals in Oregon, OH, Fremont, OH and Adrian, MI and other places. NPI 1689820631. 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 Nasser Hajar, 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

GastroenterologyPrimary specialty
YesAccepts Medicare assignment
21Years since medical school (graduated 2005)
MaleGender (as listed)
ProMedica Central PhysiciansGroup practice (+1 more)

Quick answers

Which hospitals does Nasser Hajar work at?
Medicare's official clinician data lists Nasser Hajar at 5 hospitals: Bay Park Community Hospital, Memorial Hospital, ProMedica Charles and Virginia Hickman Hospital, ProMedica Monroe Regional Hospital and ProMedica Toledo Hospital. This is where the clinician works or has privileges; call the hospital to confirm.
Where does Nasser Hajar see patients?
Medicare's clinician data lists 6 practice locations, including Findlay, OH, Toledo, OH and Sylvania, OH. Call before your visit to confirm the address.
What is Nasser Hajar's specialty?
Medicare lists Gastroenterology as the primary specialty.
Does Nasser Hajar accept Medicare assignment?
Yes. Medicare's clinician data says Nasser Hajar 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 Nasser Hajar?
(419) 429-7637, as listed in official Medicare / NPI Registry data.
What is Nasser Hajar's NPI number?
1689820631. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.

Hospitals where Nasser Hajar works

Medicare's Facility Affiliation Data lists Nasser Hajar 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 Nasser Hajar is enrolled with Medicare (CMS data updated 2026-10-02). The first 5 of 6; the Medicare profile lists all.

Group practices

Medicare enrollment lists Nasser Hajar as a member of these groups (CMS data updated 2026-10-02).

  • ProMedica Central Physicians785 clinicians in the group
  • Specialty Physicians of Blanchard Valley LLC113 clinicians in the group

Specialties

Find other Gastroenterology doctors in Ohio →

Other gastroenterologists in Findlay

Clinicians with the same Medicare primary specialty in Findlay, OH — not a recommendation.

All gastroenterologists in Findlay →

Clinician information

CredentialMD
Graduation year2005
Gender (as listed)Male
Medicare assignmentAccepts (Medicare-approved amount as full payment)
NPI (National Provider Identifier)1689820631
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