Quick answers
- Which hospitals does Matthew J. Weiss work at?
- Medicare's official clinician data lists Matthew J. Weiss at 1 hospital: Ascension Genesys Hospital. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Matthew J. Weiss see patients?
- Medicare's clinician data lists 1 practice location in Grand Blanc, MI. Call before your visit to confirm the address.
- What is Matthew J. Weiss's specialty?
- Medicare lists Geriatric Medicine as the primary specialty.
- Does Matthew J. Weiss accept Medicare assignment?
- Yes. Medicare's clinician data says Matthew J. Weiss 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 Matthew J. Weiss?
- (810) 603-3702, as listed in official Medicare / NPI Registry data.
- What is Matthew J. Weiss's NPI number?
- 1982712717. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Matthew J. Weiss works
Medicare's Facility Affiliation Data lists Matthew J. Weiss 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
Practice locations
Addresses where Matthew J. Weiss is enrolled with Medicare (CMS data updated 2026-10-02).
- 9463 Holly Rd, Suite 103Grand Blanc, MI 48439 (810) 603‑3702
Specialties
- Geriatric Medicineprimary
Other geriatricians in Michigan
Clinicians with the same Medicare primary specialty in Michigan — not a recommendation.
Clinician information
| Credential | DO |
|---|---|
| Medical school | Michigan State University College Of Osteopathic Medicine |
| Graduation year | 1979 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1982712717 |
| 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