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Internal Medicine

Matthew A. Mazur, DO

Works at hospitals in Kalkaska, MI · Grayling, MI · Gaylord, MI … · Michigan

Summary

Matthew A. Mazur, DO (Internal Medicine) is listed by Medicare at 4 hospitals in Kalkaska, MI, Grayling, MI and Gaylord, MI and other places. NPI 1376719781. 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 Matthew A. Mazur, 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
21Years since medical school (graduated 2005)
Arizona College Of Osteopathic Medicine Mid Western UniversityMedical school
MaleGender (as listed)
Munson Healthcare Otsego Memorial HospitalGroup practice

Quick answers

Which hospitals does Matthew A. Mazur work at?
Medicare's official clinician data lists Matthew A. Mazur at 4 hospitals: Kalkaska Memorial Health Center, Munson Healthcare Grayling Hospital, Munson Healthcare Otsego Memorial Hospital and Munson Medical Center. This is where the clinician works or has privileges; call the hospital to confirm.
Where does Matthew A. Mazur see patients?
Medicare's clinician data lists 4 practice locations, including Gaylord, MI. Call before your visit to confirm the address.
What is Matthew A. Mazur's specialty?
Medicare lists Internal Medicine as the primary specialty.
Does Matthew A. Mazur accept Medicare assignment?
Yes. Medicare's clinician data says Matthew A. Mazur 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 Matthew A. Mazur?
(989) 731-7708, as listed in official Medicare / NPI Registry data.
What is Matthew A. Mazur's NPI number?
1376719781. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.

Hospitals where Matthew A. Mazur works

Medicare's Facility Affiliation Data lists Matthew A. Mazur 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 Matthew A. Mazur is enrolled with Medicare (CMS data updated 2026-10-02).

  • 1996 WaldenGaylord, MI 49735
  • 1996 Walden, Otsego County Memorial HospitalGaylord, MI 49735
  • 829 N Ctr AveGaylord, MI 49735 (989) 731‑7708
  • 829 N Ctr Ave, Mhc Omh Medical GroupGaylord, MI 49735 (989) 731‑7708

Group practices

Medicare enrollment lists Matthew A. Mazur as a member of this group (CMS data updated 2026-10-02).

  • Munson Healthcare Otsego Memorial Hospital120 clinicians in the group

Specialties

Find other Internal Medicine doctors in Michigan →

Other internal medicine doctors in Gaylord

Clinicians with the same Medicare primary specialty in Gaylord, MI — not a recommendation.

All internal medicine doctors in Gaylord →

Clinician information

CredentialDO
Medical schoolArizona College Of Osteopathic Medicine Mid Western University
Graduation year2005
Gender (as listed)Male
Medicare assignmentAccepts (Medicare-approved amount as full payment)
NPI (National Provider Identifier)1376719781
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