Quick answers
- Which hospitals does James B. Hayner work at?
- Medicare's official clinician data lists James B. Hayner at 5 hospitals: Chelsea Hospital, Trinity Health Ann Arbor Hospital, Trinity Health Livingston Hospital, Trinity Health Oakland Hospital and University of Michigan Health System. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does James B. Hayner see patients?
- Medicare's clinician data lists 1 practice location in Howell, MI. Call before your visit to confirm the address.
- What is James B. Hayner's specialty?
- Medicare lists Internal Medicine as the primary specialty.
- Does James B. Hayner accept Medicare assignment?
- Yes. Medicare's clinician data says James B. Hayner 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.
- Does James B. Hayner offer telehealth?
- Medicare's clinician data says James B. Hayner offers telehealth services. Ask the office which visits can be done by video or phone.
- What is the phone number for James B. Hayner?
- (517) 273-9090, as listed in official Medicare / NPI Registry data.
- What is James B. Hayner's NPI number?
- 1902965601. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where James B. Hayner works
Medicare's Facility Affiliation Data lists James B. Hayner at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Chelsea HospitalChelsea, MI · Acute Care Hospital · CCN 230259
- Trinity Health Ann Arbor HospitalAnn Arbor, MI · Acute Care Hospital · CCN 230156
- Trinity Health Livingston HospitalBrighton, MI · Acute Care Hospital · CCN 230069
- Trinity Health Oakland HospitalPontiac, MI · Acute Care Hospital · CCN 230029
- University of Michigan Health SystemAnn Arbor, MI · Acute Care Hospital · CCN 230046
Practice locations
Addresses where James B. Hayner is enrolled with Medicare (CMS data updated 2026-10-02).
- 1221 Byron Rd, Suite 2and3Howell, MI 48843 (517) 273‑9090
Group practices
Medicare enrollment lists James B. Hayner as a member of this group (CMS data updated 2026-10-02).
- Hayner Internal Medicine Associates, PLLC2 clinicians in the group
Specialties
- Internal Medicineprimary
Other internal medicine doctors in Howell
Clinicians with the same Medicare primary specialty in Howell, MI — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | Michigan State University College Of Human Medicine |
| Graduation year | 1989 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| Telehealth | Offers telehealth services |
| NPI (National Provider Identifier) | 1902965601 |
| 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