Quick answers
- Which hospitals does Frederick R. Stack work at?
- Medicare's official clinician data lists Frederick R. Stack at 5 hospitals: Benefis Hospitals Inc, Benefis Teton Medical Center, Cary Medical Center, Logan Health - Shelby and Northern Montana Hospital. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Frederick R. Stack see patients?
- Medicare's clinician data lists 3 practice locations, including Great Falls, MT and Caribou, ME. Call before your visit to confirm the address.
- What is Frederick R. Stack's specialty?
- Medicare lists Internal Medicine as the primary specialty.
- Does Frederick R. Stack accept Medicare assignment?
- Yes. Medicare's clinician data says Frederick R. Stack 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 Frederick R. Stack?
- (406) 455-5000, as listed in official Medicare / NPI Registry data.
- What is Frederick R. Stack's NPI number?
- 1548256977. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Frederick R. Stack works
Medicare's Facility Affiliation Data lists Frederick R. Stack at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Benefis Hospitals IncGreat Falls, MT · Acute Care Hospital · CCN 270012
- Benefis Teton Medical CenterChoteau, MT · Critical Access Hospital · CCN 271307
- Cary Medical CenterCaribou, ME · Acute Care Hospital · CCN 200031
- Logan Health - ShelbyShelby, MT · Critical Access Hospital · CCN 271328
- Northern Montana HospitalHavre, MT · Critical Access Hospital · CCN 271348
Practice locations
Addresses where Frederick R. Stack is enrolled with Medicare (CMS data updated 2026-10-02).
- 1101 26th St SGreat Falls, MT 59405 (406) 455‑5000
- 163 Van Buren RdCaribou, ME 04736 (207) 498‑6921
- 500 15th Ave SGreat Falls, MT 59405 (406) 455‑5000
Group practices
Medicare enrollment lists Frederick R. Stack as a member of these groups (CMS data updated 2026-10-02).
- Benefis Hospitals Inc384 clinicians in the group
- Pines Health Services56 clinicians in the group
Specialties
- Internal Medicineprimary
Other internal medicine doctors in Great Falls
Clinicians with the same Medicare primary specialty in Great Falls, MT — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | University Of Nebraska College Of Medicine |
| Graduation year | 1991 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1548256977 |
| 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