Quick answers
- Which hospitals does Nicholas Bontumasi work at?
- Medicare's official clinician data lists Nicholas Bontumasi at 2 hospitals: Spectrum Health and Trinity Health Ann Arbor Hospital. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Nicholas Bontumasi see patients?
- Medicare's clinician data lists 2 practice locations, including Marquette, MI and Grand Haven, MI. Call before your visit to confirm the address.
- What is Nicholas Bontumasi's specialty?
- Medicare lists Dermatology as the primary specialty.
- Does Nicholas Bontumasi accept Medicare assignment?
- Yes. Medicare's clinician data says Nicholas Bontumasi 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 Bontumasi?
- (906) 225-5458, as listed in official Medicare / NPI Registry data.
- What is Nicholas Bontumasi's NPI number?
- 1306289574. 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 Bontumasi works
Medicare's Facility Affiliation Data lists Nicholas Bontumasi at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Spectrum HealthGrand Rapids, MI · Acute Care Hospital · CCN 230038
- Trinity Health Ann Arbor HospitalAnn Arbor, MI · Acute Care Hospital · CCN 230156
Practice locations
Addresses where Nicholas Bontumasi is enrolled with Medicare (CMS data updated 2026-10-02).
- 1007 Harbor Hills Dr, Suite CMarquette, MI 49855 (906) 225‑5458
- 1600 S Beacon Blvd, Suite 160Grand Haven, MI 49417 (616) 268‑2001
Group practices
Medicare enrollment lists Nicholas Bontumasi as a member of this group (CMS data updated 2026-10-02).
- Forefront Dermatology SC662 clinicians in the group
Specialties
- Dermatologyprimary
Other dermatologists in Marquette
Clinicians with the same Medicare primary specialty in Marquette, MI — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | Washington University School Of Medicine |
| Graduation year | 2013 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1306289574 |
| 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