Quick answers
- Which hospitals does Nathan A. Altner work at?
- Medicare's official clinician data lists Nathan A. Altner at 3 hospitals: Mercy Health Lakeshore Campus, Trinity Health Grand Haven Hospital and Trinity Health Muskegon Hospital. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Nathan A. Altner see patients?
- Medicare's clinician data lists 7 practice locations, including Muskegon, MI, Grand Rapids, MI and Brighton, MI. Call before your visit to confirm the address.
- What is Nathan A. Altner's specialty?
- Medicare lists Physician Assistant as the primary specialty.
- Does Nathan A. Altner accept Medicare assignment?
- Yes. Medicare's clinician data says Nathan A. Altner 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 Nathan A. Altner?
- (231) 672-3500, as listed in official Medicare / NPI Registry data.
- What is Nathan A. Altner's NPI number?
- 1225752959. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Nathan A. Altner works
Medicare's Facility Affiliation Data lists Nathan A. Altner at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Mercy Health Lakeshore CampusShelby, MI · Critical Access Hospital · CCN 231320
- Trinity Health Grand Haven HospitalGrand Haven, MI · Acute Care Hospital · CCN 230174
- Trinity Health Muskegon HospitalMuskegon, MI · Acute Care Hospital · CCN 230066
Practice locations
Addresses where Nathan A. Altner is enrolled with Medicare (CMS data updated 2026-10-02). The first 5 of 7; the Medicare profile lists all.
- 1212 E Sherman BlvdMuskegon, MI 49444 (231) 672‑3500
- 1223 Mercy DrMuskegon, MI 49444 (231) 672‑3500
- 1471 E Beltline Ave NE, Suite 202Grand Rapids, MI 49525 (616) 410‑7701
- 1670 E Sherman Blvd, Suite 100Muskegon, MI 49444 (231) 672‑3600
- 2006 Holton Rd, Suite 500Muskegon, MI 49445 (231) 370‑1280
Group practices
Medicare enrollment lists Nathan A. Altner as a member of these groups (CMS data updated 2026-10-02).
- Iha Health Services Corporation1,168 clinicians in the group
- Mercy Health Westshore Cardiology Services37 clinicians in the group
Specialties
- Physician Assistantprimary
Other physician assistants in Muskegon
Clinicians with the same Medicare primary specialty in Muskegon, MI — not a recommendation.
Clinician information
| Graduation year | 2022 |
|---|---|
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1225752959 |
| 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