Quick answers
- Which hospitals does Gavin O'Brien work at?
- Medicare's official clinician data lists Gavin O'Brien at 1 hospital: Spectrum Health. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Gavin O'Brien see patients?
- Medicare's clinician data lists 2 practice locations, including Saginaw, MI and Grand Rapids, MI. Call before your visit to confirm the address.
- What is Gavin O'Brien's specialty?
- Medicare lists Physician Assistant as the primary specialty.
- Does Gavin O'Brien accept Medicare assignment?
- Yes. Medicare's clinician data says Gavin O'Brien 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 Gavin O'Brien?
- (989) 282-4003, as listed in official Medicare / NPI Registry data.
- What is Gavin O'Brien's NPI number?
- 1003689183. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Gavin O'Brien works
Medicare's Facility Affiliation Data lists Gavin O'Brien 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
Practice locations
Addresses where Gavin O'Brien is enrolled with Medicare (CMS data updated 2026-10-02).
- 4760 Fashion Square Blvd, Suite L 1Saginaw, MI 48604 (989) 282‑4003
- 770 Kenmoor Ave SE, Suite 100Grand Rapids, MI 49546 (616) 272‑3533
Group practices
Medicare enrollment lists Gavin O'Brien as a member of these groups (CMS data updated 2026-10-02).
- Northview Medical House Calls PLC36 clinicians in the group
- Northview Health Specialists, PLLC25 clinicians in the group
Specialties
- Physician Assistantprimary
Other physician assistants in Saginaw
Clinicians with the same Medicare primary specialty in Saginaw, MI — not a recommendation.
Clinician information
| Graduation year | 2025 |
|---|---|
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1003689183 |
| 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