Quick answers
- Which hospitals does James A. Visser work at?
- Medicare's official clinician data lists James A. Visser at 5 hospitals: Holland Hospital, Mercy Health Saint Mary's, Spectrum Health, Spectrum Health United Hospital and University of Michigan Health - West. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does James A. Visser see patients?
- Medicare's clinician data lists 1 practice location in Grand Rapids, MI. Call before your visit to confirm the address.
- What is James A. Visser's specialty?
- Medicare lists Nephrology as the primary specialty, and also Internal Medicine.
- Does James A. Visser accept Medicare assignment?
- Yes. Medicare's clinician data says James A. Visser 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 James A. Visser?
- (616) 752-6235, as listed in official Medicare / NPI Registry data.
- What is James A. Visser's NPI number?
- 1548353048. 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 A. Visser works
Medicare's Facility Affiliation Data lists James A. Visser at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Holland HospitalHolland, MI · Acute Care Hospital · CCN 230072
- Mercy Health Saint Mary'sGrand Rapids, MI · Acute Care Hospital · CCN 230059
- Spectrum HealthGrand Rapids, MI · Acute Care Hospital · CCN 230038
- Spectrum Health United HospitalGreenville, MI · Acute Care Hospital · CCN 230035
- University of Michigan Health - WestWyoming, MI · Acute Care Hospital · CCN 230236
Practice locations
Addresses where James A. Visser is enrolled with Medicare (CMS data updated 2026-10-02).
- 330 E Beltline Ave NE, Suite 100Grand Rapids, MI 49506 (616) 752‑6235
Group practices
Medicare enrollment lists James A. Visser as a member of this group (CMS data updated 2026-10-02).
- Renal Associates of West Michigan PC20 clinicians in the group
Specialties
- Nephrologyprimary
- Internal Medicinealso
Other nephrologists in Grand Rapids
Clinicians with the same Medicare primary specialty in Grand Rapids, MI — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | University Of Michigan Medical School |
| Graduation year | 1994 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1548353048 |
| 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