Quick answers
- Which hospitals does Thomas B. Addison work at?
- Medicare's official clinician data lists Thomas B. Addison at 5 hospitals: Benefis Hospitals Inc, Benefis Teton Medical Center, Great Falls Clinic Hospital, Missouri River Medical Center and Northern Montana Hospital. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Thomas B. Addison see patients?
- Medicare's clinician data lists 7 practice locations, including Great Falls, MT, Lewistown, MT and Helena, MT. Call before your visit to confirm the address.
- What is Thomas B. Addison's specialty?
- Medicare lists Internal Medicine as the primary specialty.
- Does Thomas B. Addison accept Medicare assignment?
- Yes. Medicare's clinician data says Thomas B. Addison 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.
- Does Thomas B. Addison offer telehealth?
- Medicare's clinician data says Thomas B. Addison offers telehealth services. Ask the office which visits can be done by video or phone.
- What is the phone number for Thomas B. Addison?
- (406) 455-5000, as listed in official Medicare / NPI Registry data.
- What is Thomas B. Addison's NPI number?
- 1871594754. 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 B. Addison works
Medicare's Facility Affiliation Data lists Thomas B. Addison 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
- Great Falls Clinic HospitalGreat Falls, MT · Acute Care Hospital · CCN 270086
- Missouri River Medical CenterFort Benton, MT · Critical Access Hospital · CCN 271304
- Northern Montana HospitalHavre, MT · Critical Access Hospital · CCN 271348
Practice locations
Addresses where Thomas B. Addison is enrolled with Medicare (CMS data updated 2026-10-02). The first 5 of 7; the Medicare profile lists all.
- 1101 26th St SGreat Falls, MT 59405 (406) 455‑5000
- 1300 28th St SGreat Falls, MT 59405 (406) 455‑5000
- 1401 25th St SGreat Falls, MT 59405 (406) 455‑5000
- 1422 W Main StLewistown, MT 59457 (406) 771‑6230
- 1645 Vandelay AveHelena, MT 59601
Group practices
Medicare enrollment lists Thomas B. Addison as a member of this group (CMS data updated 2026-10-02).
- Benefis Hospitals Inc384 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 | Mayo Medical School |
| Graduation year | 1984 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| Telehealth | Offers telehealth services |
| NPI (National Provider Identifier) | 1871594754 |
| 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