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Vascular Surgery

Ronald A. Bays, MD

Works at hospitals in Saginaw, MI · Cass City, MI · Marlette, MI … · Michigan

Summary

Ronald A. Bays, MD (Vascular Surgery) is listed by Medicare at 5 hospitals in Saginaw, MI, Cass City, MI and Marlette, MI and other places. NPI 1073596037. 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 Ronald A. Bays, 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

Vascular SurgeryPrimary specialty
YesAccepts Medicare assignment
38Years since medical school (graduated 1988)
Indiana University School Of MedicineMedical school
MaleGender (as listed)
Mid Michigan Vascular Surgery, P.C.Group practice

Quick answers

Which hospitals does Ronald A. Bays work at?
Medicare's official clinician data lists Ronald A. Bays at 5 hospitals: Covenant Medical Center, Hills & Dales General Hospital, Marlette Regional Hospital, MyMichigan Medical Center Saginaw and Tawas St Joseph Hospital. This is where the clinician works or has privileges; call the hospital to confirm.
Where does Ronald A. Bays see patients?
Medicare's clinician data lists 1 practice location in Saginaw, MI. Call before your visit to confirm the address.
What is Ronald A. Bays's specialty?
Medicare lists Vascular Surgery as the primary specialty.
Does Ronald A. Bays accept Medicare assignment?
Yes. Medicare's clinician data says Ronald A. Bays 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 Ronald A. Bays?
(989) 790-2600, as listed in official Medicare / NPI Registry data.
What is Ronald A. Bays's NPI number?
1073596037. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.

Hospitals where Ronald A. Bays works

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

Group practices

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

  • Mid Michigan Vascular Surgery, P.C.5 clinicians in the group

Specialties

Find other Vascular Surgery doctors in Michigan →

Other vascular surgeons in Michigan

Clinicians with the same Medicare primary specialty in Michigan — not a recommendation.

All vascular surgeons in Michigan →

Clinician information

CredentialMD
Medical schoolIndiana University School Of Medicine
Graduation year1988
Gender (as listed)Male
Medicare assignmentAccepts (Medicare-approved amount as full payment)
NPI (National Provider Identifier)1073596037
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