Quick answers
- Which hospitals does Patrick K. O'Callaghan work at?
- Medicare's official clinician data lists Patrick K. O'Callaghan at 3 hospitals: Chippewa County War Memorial Hospital, McLaren Central Michigan and McLaren Northern Michigan. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Patrick K. O'Callaghan see patients?
- Medicare's clinician data lists 1 practice location in Petoskey, MI. Call before your visit to confirm the address.
- What is Patrick K. O'Callaghan's specialty?
- Medicare lists Orthopedic Surgery as the primary specialty.
- Does Patrick K. O'Callaghan accept Medicare assignment?
- Yes. Medicare's clinician data says Patrick K. O'Callaghan 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 Patrick K. O'Callaghan?
- (231) 487-5400, as listed in official Medicare / NPI Registry data.
- What is Patrick K. O'Callaghan's NPI number?
- 1750792446. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Patrick K. O'Callaghan works
Medicare's Facility Affiliation Data lists Patrick K. O'Callaghan at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Chippewa County War Memorial HospitalSault Ste Marie, MI · Acute Care Hospital · CCN 230239
- McLaren Central MichiganMount Pleasant, MI · Acute Care Hospital · CCN 230080
- McLaren Northern MichiganPetoskey, MI · Acute Care Hospital · CCN 230105
Practice locations
Addresses where Patrick K. O'Callaghan is enrolled with Medicare (CMS data updated 2026-10-02).
- 560 W Mitchell St, Suite 560Petoskey, MI 49770 (231) 487‑5400
Group practices
Medicare enrollment lists Patrick K. O'Callaghan as a member of this group (CMS data updated 2026-10-02).
- McLaren Central Michigan182 clinicians in the group
Specialties
- Orthopedic Surgeryprimary
Other orthopedic surgeons in Michigan
Clinicians with the same Medicare primary specialty in Michigan — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | Michigan State University College Of Human Medicine |
| Graduation year | 2014 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1750792446 |
| 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