Quick answers
- Which hospitals does Seth D. Reiner work at?
- Medicare's official clinician data lists Seth D. Reiner at 2 hospitals: Holy Rosary Hospital and Saint Joseph Hospital. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Seth D. Reiner see patients?
- Medicare's clinician data lists 1 practice location in Miles City, MT. Call before your visit to confirm the address.
- What is Seth D. Reiner's specialty?
- Medicare lists Radiation Oncology as the primary specialty.
- Does Seth D. Reiner accept Medicare assignment?
- Yes. Medicare's clinician data says Seth D. Reiner 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 Seth D. Reiner?
- (406) 233-2600, as listed in official Medicare / NPI Registry data.
- What is Seth D. Reiner's NPI number?
- 1497887624. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Seth D. Reiner works
Medicare's Facility Affiliation Data lists Seth D. Reiner at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Holy Rosary HospitalMiles City, MT · Critical Access Hospital · CCN 271347
- Saint Joseph HospitalDenver, CO · Acute Care Hospital · CCN 060028
Practice locations
Addresses where Seth D. Reiner is enrolled with Medicare (CMS data updated 2026-10-02).
- 2600 Wilson StMiles City, MT 59301 (406) 233‑2600
Group practices
Medicare enrollment lists Seth D. Reiner as a member of this group (CMS data updated 2026-10-02).
- Holy Rosary Healthcare49 clinicians in the group
Specialties
- Radiation Oncologyprimary
Other radiation oncologists in Montana
Clinicians with the same Medicare primary specialty in Montana — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | State University Of New York Downstate Medical Center |
| Graduation year | 1988 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1497887624 |
| 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