Quick answers
- Which hospitals does Mark S. Thompson work at?
- Medicare's official clinician data lists Mark S. Thompson at 1 hospital: McLaren Flint. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Mark S. Thompson see patients?
- Medicare's clinician data lists 3 practice locations, including West Branch, MI, Flint, MI and Pontiac, MI. Call before your visit to confirm the address.
- What is Mark S. Thompson's specialty?
- Medicare lists Emergency Medicine as the primary specialty.
- Does Mark S. Thompson accept Medicare assignment?
- Yes. Medicare's clinician data says Mark S. Thompson 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 S. Thompson?
- (989) 516-5075, as listed in official Medicare / NPI Registry data.
- What is Mark S. Thompson's NPI number?
- 1447304498. 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 S. Thompson works
Medicare's Facility Affiliation Data lists Mark S. Thompson at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- McLaren FlintFlint, MI · Acute Care Hospital · CCN 230141
Practice locations
Addresses where Mark S. Thompson is enrolled with Medicare (CMS data updated 2026-10-02).
- 2110 S M, 76 Suite 1West Branch, MI 48661 (989) 516‑5075
- 401 S Ballenger HwyFlint, MI 48532 (810) 342‑2000
- 50 N Perry StPontiac, MI 48342 (248) 338‑5000
Group practices
Medicare enrollment lists Mark S. Thompson as a member of these groups (CMS data updated 2026-10-02).
- McLaren Hospital Group375 clinicians in the group
- McLaren Medical Group213 clinicians in the group
Specialties
- Emergency Medicineprimary
Other emergency medicine doctors in West Branch
Clinicians with the same Medicare primary specialty in West Branch, MI — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | University Of Michigan Medical School |
| Graduation year | 1999 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1447304498 |
| 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