Quick answers
- Which hospitals does Thomas A. Warr work at?
- Medicare's official clinician data lists Thomas A. Warr at 5 hospitals: Benefis Hospitals Inc, Great Falls Clinic Hospital, Logan Health - Shelby, Northern Rockies Medical Center and Pondera Medical Center. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Thomas A. Warr see patients?
- Medicare's clinician data lists 3 practice locations, including Great Falls, MT. Call before your visit to confirm the address.
- What is Thomas A. Warr's specialty?
- Medicare lists Medical Oncology as the primary specialty, and also Hematology and Internal Medicine.
- Does Thomas A. Warr accept Medicare assignment?
- Yes. Medicare's clinician data says Thomas A. Warr 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 Thomas A. Warr?
- (406) 455-5342, as listed in official Medicare / NPI Registry data.
- What is Thomas A. Warr's NPI number?
- 1356342208. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Thomas A. Warr works
Medicare's Facility Affiliation Data lists Thomas A. Warr 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
- Great Falls Clinic HospitalGreat Falls, MT · Acute Care Hospital · CCN 270086
- Logan Health - ShelbyShelby, MT · Critical Access Hospital · CCN 271328
- Northern Rockies Medical CenterCut Bank, MT · Critical Access Hospital · CCN 271337
- Pondera Medical CenterConrad, MT · Critical Access Hospital · CCN 271324
Practice locations
Addresses where Thomas A. Warr is enrolled with Medicare (CMS data updated 2026-10-02).
- 1101 26th St SGreat Falls, MT 59405 (406) 455‑5342
- 1400 29th St SGreat Falls, MT 59405 (406) 454‑2171
- 3000 15th Ave SGreat Falls, MT 59405 (406) 454‑2171
Group practices
Medicare enrollment lists Thomas A. Warr as a member of this group (CMS data updated 2026-10-02).
- Great Falls Clinic LLC72 clinicians in the group
Specialties
- Medical Oncologyprimary
- Hematologyalso
- Internal Medicinealso
Other oncologists in Great Falls
Clinicians with the same Medicare primary specialty in Great Falls, MT — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | Vanderbilt University School Of Medicine |
| Graduation year | 1981 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1356342208 |
| 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