Quick answers
- Which hospitals does Mark A. Mattos work at?
- Medicare's official clinician data lists Mark A. Mattos at 5 hospitals: Ascension Genesys Hospital, Hurley Medical Center, McLaren Flint, McLaren Lapeer Region and MyMichigan Medical Center Saginaw. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Mark A. Mattos see patients?
- Medicare's clinician data lists 2 practice locations, including Flint, MI. Call before your visit to confirm the address.
- What is Mark A. Mattos's specialty?
- Medicare lists Vascular Surgery as the primary specialty.
- Does Mark A. Mattos accept Medicare assignment?
- Yes. Medicare's clinician data says Mark A. Mattos 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 Mark A. Mattos?
- (810) 732-1620, as listed in official Medicare / NPI Registry data.
- What is Mark A. Mattos's NPI number?
- 1255374955. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Mark A. Mattos works
Medicare's Facility Affiliation Data lists Mark A. Mattos at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Ascension Genesys HospitalGrand Blanc, MI · Acute Care Hospital · CCN 230197
- Hurley Medical CenterFlint, MI · Acute Care Hospital · CCN 230132
- McLaren FlintFlint, MI · Acute Care Hospital · CCN 230141
- McLaren Lapeer RegionLapeer, MI · Acute Care Hospital · CCN 230193
- MyMichigan Medical Center SaginawSaginaw, MI · Acute Care Hospital · CCN 230077
Practice locations
Addresses where Mark A. Mattos is enrolled with Medicare (CMS data updated 2026-10-02).
- 5020 W Bristol RdFlint, MI 48507 (810) 732‑1620
- 5202 Miller RdFlint, MI 48507 (810) 600‑0560
Group practices
Medicare enrollment lists Mark A. Mattos as a member of this group (CMS data updated 2026-10-02).
- Vascular Surgery Assoc PC16 clinicians in the group
Specialties
- Vascular Surgeryprimary
Other vascular surgeons in Flint
Clinicians with the same Medicare primary specialty in Flint, MI — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | University Of Utah School Of Medicine |
| Graduation year | 1985 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1255374955 |
| Corrections | Report 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
- Facility Affiliation Data — Centers for Medicare & Medicaid Services (CMS), data updated 2026-10-02, retrieved 2026-10-29
- National Downloadable File (Doctors and Clinicians) — CMS, data updated 2026-10-02, retrieved 2026-10-29
- NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
- Medicare Care Compare — official Medicare tool to look up clinicians