Quick answers
- Which hospitals does Aaron Tenharmsel work at?
- Medicare's official clinician data lists Aaron Tenharmsel at 1 hospital: Intermountain Health St Vincent Regional Hospital. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Aaron Tenharmsel see patients?
- Medicare's clinician data lists 2 practice locations, including Billings, MT and Hardin, MT. Call before your visit to confirm the address.
- What is Aaron Tenharmsel's specialty?
- Medicare lists Family Practice as the primary specialty.
- Does Aaron Tenharmsel accept Medicare assignment?
- Yes. Medicare's clinician data says Aaron Tenharmsel 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 Aaron Tenharmsel?
- (406) 657-7000, as listed in official Medicare / NPI Registry data.
- What is Aaron Tenharmsel's NPI number?
- 1255623583. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Aaron Tenharmsel works
Medicare's Facility Affiliation Data lists Aaron Tenharmsel at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Intermountain Health St Vincent Regional HospitalBillings, MT · Acute Care Hospital · CCN 270049
Practice locations
Addresses where Aaron Tenharmsel is enrolled with Medicare (CMS data updated 2026-10-02).
- 1233 N 30th StBillings, MT 59101 (406) 657‑7000
- 16 N Miles Ave, Suite 101Hardin, MT 59034 (406) 237‑8270
Group practices
Medicare enrollment lists Aaron Tenharmsel as a member of these groups (CMS data updated 2026-10-02).
- SCL Health Medical Group - Billings LLC297 clinicians in the group
- Cogent Healthcare of Montana P C79 clinicians in the group
Specialties
- Family Practiceprimary
Other family doctors in Billings
Clinicians with the same Medicare primary specialty in Billings, MT — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | Rush Medical College Of Rush University |
| Graduation year | 2011 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1255623583 |
| 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