Quick answers
- Which hospitals does Gary Trewick work at?
- Medicare's official clinician data lists Gary Trewick at 4 hospitals: Colquitt Regional Medical Center, Eastern Idaho Regional Medical Center, Holy Cross Hospital-Jordan Valley and Lone Peak Hospital. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Gary Trewick see patients?
- Medicare's clinician data lists 3 practice locations, including Idaho Falls, ID, Moultrie, GA and Ogden, UT. Call before your visit to confirm the address.
- What is Gary Trewick's specialty?
- Medicare lists Internal Medicine as the primary specialty.
- Does Gary Trewick accept Medicare assignment?
- Yes. Medicare's clinician data says Gary Trewick 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 Trewick?
- (208) 529-6111, as listed in official Medicare / NPI Registry data.
- What is Gary Trewick's NPI number?
- 1336482850. 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 Trewick works
Medicare's Facility Affiliation Data lists Gary Trewick at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Colquitt Regional Medical CenterMoultrie, GA · Acute Care Hospital · CCN 110105
- Eastern Idaho Regional Medical CenterIdaho Falls, ID · Acute Care Hospital · CCN 130018
- Holy Cross Hospital-Jordan ValleyWest Jordan, UT · Acute Care Hospital · CCN 460051
- Lone Peak HospitalDraper, UT · Acute Care Hospital · CCN 460060
Practice locations
Addresses where Gary Trewick is enrolled with Medicare (CMS data updated 2026-10-02).
- 3100 Channing WayIdaho Falls, ID 83404 (208) 529‑6111
- 3131 S Main StMoultrie, GA 31768 (229) 502‑9782
- 5475 S 500Ogden, UT 84405 (801) 783‑5011
Group practices
Medicare enrollment lists Gary Trewick as a member of these groups (CMS data updated 2026-10-02).
- Utah Regional Hospitalists LLC119 clinicians in the group
- Colquitt Regional Hospitalists, LLC28 clinicians in the group
Specialties
- Internal Medicineprimary
Other internal medicine doctors in Idaho Falls
Clinicians with the same Medicare primary specialty in Idaho Falls, ID — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Graduation year | 2012 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1336482850 |
| 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