Quick answers
- Which hospitals does Mary Weimer work at?
- Medicare's official clinician data lists Mary Weimer at 3 hospitals: Billings Clinic Hospital, Holy Rosary Hospital and Intermountain Health St Vincent Regional Hospital. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Mary Weimer see patients?
- Medicare's clinician data lists 1 practice location in Miles City, MT. Call before your visit to confirm the address.
- What is Mary Weimer's specialty?
- Medicare lists Nurse Practitioner as the primary specialty.
- Does Mary Weimer accept Medicare assignment?
- Yes. Medicare's clinician data says Mary Weimer 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 Mary Weimer?
- (406) 233-2600, as listed in official Medicare / NPI Registry data.
- What is Mary Weimer's NPI number?
- 1811466741. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Mary Weimer works
Medicare's Facility Affiliation Data lists Mary Weimer at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Billings Clinic HospitalBillings, MT · Acute Care Hospital · CCN 270004
- Holy Rosary HospitalMiles City, MT · Critical Access Hospital · CCN 271347
- Intermountain Health St Vincent Regional HospitalBillings, MT · Acute Care Hospital · CCN 270049
Practice locations
Addresses where Mary Weimer is enrolled with Medicare (CMS data updated 2026-10-02).
- 2600 Wilson StMiles City, MT 59301 (406) 233‑2600
Group practices
Medicare enrollment lists Mary Weimer as a member of this group (CMS data updated 2026-10-02).
- Holy Rosary Healthcare49 clinicians in the group
Specialties
- Nurse Practitionerprimary
Other nurse practitioners in Miles City
Clinicians with the same Medicare primary specialty in Miles City, MT — not a recommendation.
Clinician information
| Credential | NP |
|---|---|
| Graduation year | 2017 |
| Gender (as listed) | Female |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1811466741 |
| 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