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Internal Medicine

Brandon M. Theriault, DO

Works at hospitals in Commerce Township, MI · Pontiac, MI · Michigan

Summary

Dr. Brandon M. Theriault, DO is an internal medicine doctor at 1 Wiliam Carls Dr, Commerce Township, MI 48382. Phone: (248) 283-4000. Accepts Medicare assignment. NPI 1144970369. Source: CMS National Downloadable File, updated October 2, 2026; CMS Facility Affiliation Data, updated October 2, 2026.

  • Specialty: Internal medicine doctor (Medicare lists Internal Medicine)
  • Address: 1 Wiliam Carls Dr, Commerce Township, MI 48382 · Directions (2 more locations)
  • Phone: (248) 283‑4000
  • Medicare: Accepts Medicare assignment
  • Hospitals: Huron Valley-Sinai Hospital, Trinity Health Oakland Hospital
  • Group practice: Mercy Hospitalists, PLLC (+1 more)
  • Medical school: Lincoln Mem Univ, Debusk Col Of Osteopathic Med · graduated 2022 (4 years since medical school)
  • Gender (as listed): Male

From official Medicare data

This page shows what Medicare's official clinician data says about Brandon M. Theriault, joined by NPI number (data updated October 2, 2026). It is not a recommendation or a rating. Call the office or hospital to confirm before you go.

In a medical emergency, call 911.

Quick answers

Does Brandon M. Theriault accept Medicare assignment?
Yes. Medicare's clinician data says Brandon M. Theriault accepts Medicare assignment (the Medicare-approved amount as full payment for covered services), as of October 2, 2026. Ask the office to confirm before your visit.
What is Brandon M. Theriault's NPI number?
1144970369. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.

Hospitals where Brandon M. Theriault works

Medicare's Facility Affiliation Data lists Brandon M. Theriault at these hospitals (updated October 2, 2026). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians. Star rating and emergency services: Hospital General Information (CMS), data updated October 26, 2026.

Practice locations

Addresses where Brandon M. Theriault is enrolled with Medicare (CMS data updated October 2, 2026).

Group practices

Medicare enrollment lists Brandon M. Theriault as a member of these groups (CMS data updated October 2, 2026).

  • Mercy Hospitalists, PLLC27 clinicians in the group
  • Hospitalist Service of Michigan LLC5 clinicians in the group

Specialties

Find other Internal Medicine doctors in Michigan →

Other internal medicine doctors in Commerce Township

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

All internal medicine doctors in Commerce Township →

Other clinicians in Mercy Hospitalists, PLLC

Medicare enrollment lists these clinicians in the same group practice — not a recommendation.

Clinician information

CredentialDO
Medical schoolLincoln Mem Univ, Debusk Col Of Osteopathic Med
Graduation year2022 (4 years since medical school)
Gender (as listed)Male
Medicare assignmentAccepts (Medicare-approved amount as full payment)
NPI (National Provider Identifier)1144970369
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 October 2, 2026, retrieved October 29, 2026
  2. Hospital General Information — CMS, data updated October 26, 2026, retrieved November 13, 2026
  3. National Downloadable File (Doctors and Clinicians) — CMS, data updated October 2, 2026, retrieved October 29, 2026
  4. NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
  5. Medicare Care Compare — official Medicare tool to look up clinicians