Quick answers
- Which hospitals does Gary Brennan work at?
- Medicare's official clinician data lists Gary Brennan at 5 hospitals: Grand Lake Health System, Institute for Orthopaedic Surgery, Lima Memorial Health System, Mercy Health St Ritas Medical Center and Van Wert County Hospital. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Gary Brennan see patients?
- Medicare's clinician data lists 1 practice location in Lima, OH. Call before your visit to confirm the address.
- What is Gary Brennan's specialty?
- Medicare lists Diagnostic Radiology as the primary specialty, and also Interventional Radiology.
- Does Gary Brennan accept Medicare assignment?
- Yes. Medicare's clinician data says Gary Brennan 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 Gary Brennan?
- (419) 998-4575, as listed in official Medicare / NPI Registry data.
- What is Gary Brennan's NPI number?
- 1194818484. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Gary Brennan works
Medicare's Facility Affiliation Data lists Gary Brennan at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Grand Lake Health SystemSaint Marys, OH · Acute Care Hospital · CCN 360032
- Institute for Orthopaedic SurgeryLima, OH · Acute Care Hospital · CCN 360263
- Lima Memorial Health SystemLima, OH · Acute Care Hospital · CCN 360009
- Mercy Health St Ritas Medical CenterLima, OH · Acute Care Hospital · CCN 360066
- Van Wert County HospitalVan Wert, OH · Acute Care Hospital · CCN 360071
Practice locations
Addresses where Gary Brennan is enrolled with Medicare (CMS data updated 2026-10-02).
- 1001 Bellefontaine AveLima, OH 45804 (419) 998‑4575
Group practices
Medicare enrollment lists Gary Brennan as a member of this group (CMS data updated 2026-10-02).
- Lima Memorial Professional Corporation165 clinicians in the group
Specialties
- Diagnostic Radiologyprimary
- Interventional Radiologyalso
Other radiologists in Lima
Clinicians with the same Medicare primary specialty in Lima, OH — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | Tulane University School Of Medicine |
| Graduation year | 2001 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1194818484 |
| 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