Quick answers
- Which hospitals does Caleb J. Mentzer work at?
- Medicare's official clinician data lists Caleb J. Mentzer at 5 hospitals: Grande Ronde Hospital, Saint Alphonsus Medical Center Ontario, Saint Alphonsus Regional Medical Center, St Luke's Regional Medical Center and St. Alphonsus Medical Center - Baker City. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Caleb J. Mentzer see patients?
- Medicare's clinician data lists 5 practice locations, including Boise, ID and Meridian, ID. Call before your visit to confirm the address.
- What is Caleb J. Mentzer's specialty?
- Medicare lists General Surgery as the primary specialty, and also Critical Care (Intensivists).
- Does Caleb J. Mentzer accept Medicare assignment?
- Yes. Medicare's clinician data says Caleb J. Mentzer 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 Caleb J. Mentzer?
- (208) 367-2121, as listed in official Medicare / NPI Registry data.
- What is Caleb J. Mentzer's NPI number?
- 1285920223. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Caleb J. Mentzer works
Medicare's Facility Affiliation Data lists Caleb J. Mentzer at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Grande Ronde HospitalLa Grande, OR · Critical Access Hospital · CCN 381321
- Saint Alphonsus Medical Center OntarioOntario, OR · Acute Care Hospital · CCN 380052
- Saint Alphonsus Regional Medical CenterBoise, ID · Acute Care Hospital · CCN 130007
- St Luke's Regional Medical CenterBoise, ID · Acute Care Hospital · CCN 130006
- St. Alphonsus Medical Center - Baker CityBaker City, OR · Critical Access Hospital · CCN 381315
Practice locations
Addresses where Caleb J. Mentzer is enrolled with Medicare (CMS data updated 2026-10-02).
- 1055 N CurtisBoise, ID 83706
- 1055 N Curtis RdBoise, ID 83706 (208) 367‑2121
- 3025 W Cherry LnMeridian, ID 83642
- 999 N Curtis RdBoise, ID 83706 (208) 302‑2600
- 999 N Curtis Rd, Suite 415Boise, ID 83706 (208) 302‑2600
Group practices
Medicare enrollment lists Caleb J. Mentzer as a member of this group (CMS data updated 2026-10-02).
- Saint Alphonsus Regional Medical Center Inc680 clinicians in the group
Specialties
- General Surgeryprimary
- Critical Care (Intensivists)also
Other general surgeons in Boise
Clinicians with the same Medicare primary specialty in Boise, ID — not a recommendation.
Clinician information
| Credential | DO |
|---|---|
| Graduation year | 2011 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1285920223 |
| 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