Quick answers
- Which hospitals does Brock Alonzo work at?
- Medicare's official clinician data lists Brock Alonzo at 1 hospital: Bitterroot Health - Daly Hospital. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Brock Alonzo see patients?
- Medicare's clinician data lists 1 practice location in Hamilton, MT. Call before your visit to confirm the address.
- What is Brock Alonzo's specialty?
- Medicare lists Ophthalmology as the primary specialty.
- Does Brock Alonzo accept Medicare assignment?
- Yes. Medicare's clinician data says Brock Alonzo 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 Brock Alonzo?
- (406) 363-5434, as listed in official Medicare / NPI Registry data.
- What is Brock Alonzo's NPI number?
- 1144649138. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Brock Alonzo works
Medicare's Facility Affiliation Data lists Brock Alonzo at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Bitterroot Health - Daly HospitalHamilton, MT · Critical Access Hospital · CCN 271340
Practice locations
Addresses where Brock Alonzo is enrolled with Medicare (CMS data updated 2026-10-02).
- 300 N 10th St AHamilton, MT 59840 (406) 363‑5434
Group practices
Medicare enrollment lists Brock Alonzo as a member of this group (CMS data updated 2026-10-02).
- Marcus Daly Memorial Hospital Corporation97 clinicians in the group
Specialties
- Ophthalmologyprimary
Other ophthalmologists in Montana
Clinicians with the same Medicare primary specialty in Montana — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | Oregon Health Sciences University School Of Medicine |
| Graduation year | 2014 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1144649138 |
| 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