Quick answers
- Which hospitals does Nicholas D. Johnson work at?
- Medicare's official clinician data lists Nicholas D. Johnson at 1 hospital: Mercy Health Saint Mary's. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Nicholas D. Johnson see patients?
- Medicare's clinician data lists 4 practice locations, including Grand Rapids, MI, Caledonia, MI and Rockford, MI. Call before your visit to confirm the address.
- What is Nicholas D. Johnson's specialty?
- Medicare lists Physician Assistant as the primary specialty.
- Does Nicholas D. Johnson accept Medicare assignment?
- Yes. Medicare's clinician data says Nicholas D. Johnson 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 Nicholas D. Johnson?
- (616) 685-3450, as listed in official Medicare / NPI Registry data.
- What is Nicholas D. Johnson's NPI number?
- 1427558477. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Nicholas D. Johnson works
Medicare's Facility Affiliation Data lists Nicholas D. Johnson at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Mercy Health Saint Mary'sGrand Rapids, MI · Acute Care Hospital · CCN 230059
Practice locations
Addresses where Nicholas D. Johnson is enrolled with Medicare (CMS data updated 2026-10-02).
- 1000 E Paris Ave SE, Suite 200Grand Rapids, MI 49546 (616) 685‑3450
- 10047 Crossroad Ct SECaledonia, MI 49316 (616) 685‑8850
- 310 Lafayette Ave SEGrand Rapids, MI 49503
- 6050 Northland Dr NE, Suite 200Rockford, MI 49341 (616) 685‑8350
Group practices
Medicare enrollment lists Nicholas D. Johnson as a member of this group (CMS data updated 2026-10-02).
- Advantage Health/Saint Mary's Medical Group505 clinicians in the group
Specialties
- Physician Assistantprimary
Other physician assistants in Grand Rapids
Clinicians with the same Medicare primary specialty in Grand Rapids, MI — not a recommendation.
Clinician information
| Graduation year | 2017 |
|---|---|
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1427558477 |
| 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