Quick answers
- Which hospitals does Mary S. Larson work at?
- Medicare's official clinician data lists Mary S. Larson at 5 hospitals: Boundary Community Hospital, Clearwater Valley Hospital & Clinics, Gritman Medical Center, Kootenai Health and St Mary's Hospital. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Mary S. Larson see patients?
- Medicare's clinician data lists 9 practice locations, including Orofino, ID, Post Falls, ID and Coeur D Alene, ID. Call before your visit to confirm the address.
- What is Mary S. Larson's specialty?
- Medicare lists Cardiovascular Disease (Cardiology) as the primary specialty.
- Does Mary S. Larson accept Medicare assignment?
- Yes. Medicare's clinician data says Mary S. Larson 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 S. Larson?
- (208) 476-5777, as listed in official Medicare / NPI Registry data.
- What is Mary S. Larson's NPI number?
- 1982650040. 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 S. Larson works
Medicare's Facility Affiliation Data lists Mary S. Larson at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Boundary Community HospitalBonners Ferry, ID · Critical Access Hospital · CCN 131301
- Clearwater Valley Hospital & ClinicsOrofino, ID · Critical Access Hospital · CCN 131320
- Gritman Medical CenterMoscow, ID · Critical Access Hospital · CCN 131327
- Kootenai HealthCoeur D'alene, ID · Acute Care Hospital · CCN 130049
- St Mary's HospitalCottonwood, ID · Critical Access Hospital · CCN 131321
Practice locations
Addresses where Mary S. Larson is enrolled with Medicare (CMS data updated 2026-10-02). The first 5 of 9; the Medicare profile lists all.
- 1055 Riverside AveOrofino, ID 83544 (208) 476‑5777
- 1300 E Mullan Ave, Suite 1300Post Falls, ID 83854 (208) 625‑5630
- 1701 Lincoln WayCoeur D Alene, ID 83814 (208) 625‑4900
- 1919 Lincoln WayCoeur D Alene, ID 83814
- 2003 Kootenai Health WayCoeur D Alene, ID 83814
Group practices
Medicare enrollment lists Mary S. Larson as a member of this group (CMS data updated 2026-10-02).
- Kootenai Health Inc399 clinicians in the group
Specialties
Find other Cardiovascular Disease (Cardiology) doctors in Idaho →
Other cardiologists in Orofino
Clinicians with the same Medicare primary specialty in Orofino, ID — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Graduation year | 1991 |
| Gender (as listed) | Female |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1982650040 |
| 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