Quick answers
- Which hospitals does Michael Barnes work at?
- Medicare's official clinician data lists Michael Barnes at 1 hospital: Trinity Health Oakland Hospital. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Michael Barnes see patients?
- Medicare's clinician data lists 5 practice locations, including Lake Orion, MI, Pontiac, MI and Van Buren, MI. Call before your visit to confirm the address.
- What is Michael Barnes's specialty?
- Medicare lists Internal Medicine as the primary specialty, and also Hospitalist.
- Does Michael Barnes accept Medicare assignment?
- Yes. Medicare's clinician data says Michael Barnes 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 Michael Barnes?
- (248) 693-5700, as listed in official Medicare / NPI Registry data.
- What is Michael Barnes's NPI number?
- 1588633176. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Michael Barnes works
Medicare's Facility Affiliation Data lists Michael Barnes at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Trinity Health Oakland HospitalPontiac, MI · Acute Care Hospital · CCN 230029
Practice locations
Addresses where Michael Barnes is enrolled with Medicare (CMS data updated 2026-10-02).
- 1375 S Lapeer Rd, Suite 210 Iha Lake Orion Primary CareLake Orion, MI 48360 (248) 693‑5700
- 44428 Woodward Ave, 102 Trinity Health Henderson Academic PrimaPontiac, MI 48341 (248) 858‑3126
- 44428 Woodward Ave, Suite 102Pontiac, MI 48341 (734) 712‑8700
- 51341 W Huron River DrVan Buren, MI 48111
- 999 S Lapeer Rd, 100 Trinity Health Iha Medical Group PrimarOxford, MI 48371 (248) 218‑9266
Group practices
Medicare enrollment lists Michael Barnes as a member of these groups (CMS data updated 2026-10-02).
- Iha Health Services Corporation1,168 clinicians in the group
- Iha Ooma Primary LLC48 clinicians in the group
Specialties
- Internal Medicineprimary
- Hospitalistalso
Other internal medicine doctors in Lake Orion
Clinicians with the same Medicare primary specialty in Lake Orion, MI — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | Wayne State University School Of Medicine |
| Graduation year | 1997 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1588633176 |
| 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