Quick answers
- Does Olga M. Ter-Grigoryan accept Medicare assignment?
- Yes. Medicare's clinician data says Olga M. Ter-Grigoryan accepts Medicare assignment (the Medicare-approved amount as full payment for covered services), as of October 2, 2026. Ask the office to confirm before your visit.
- What is Olga M. Ter-Grigoryan's NPI number?
- 1700896420. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Olga M. Ter-Grigoryan works
Medicare's Facility Affiliation Data lists Olga M. Ter-Grigoryan at these hospitals (updated October 2, 2026). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians. Star rating and emergency services: Hospital General Information (CMS), data updated October 26, 2026.
- Essentia Health St Mary's Medical CenterDuluth, MN · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 240002
- St Marys Hospital SuperiorSuperior, WI · Critical Access Hospital · Emergency services: listed by Medicare · CCN 521329
Practice locations
Addresses where Olga M. Ter-Grigoryan is enrolled with Medicare (CMS data updated October 2, 2026).
- 1600 Miller Trunk HwyDuluth, MN 55811 (218) 786‑5360
- 1600 Miller Trunk Hwy, Bldg CDuluth, MN 55811 (218) 786‑5360
- 3500 Tower AveSuperior, WI 54880 (715) 395‑5454
Group practices
Medicare enrollment lists Olga M. Ter-Grigoryan as a member of these groups (CMS data updated October 2, 2026).
- Polinsky Medical Rehabilitation Center382 clinicians in the group
- St Marys Hospital of Superior95 clinicians in the group
Specialties
- Nurse Practitionerprimary
Other nurse practitioners in Duluth
Clinicians with the same Medicare primary specialty in Duluth, MN — not a recommendation.
Other clinicians in Polinsky Medical Rehabilitation Center
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Graduation year | 2005 |
|---|---|
| Gender (as listed) | Female |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1700896420 |
| 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 October 2, 2026, retrieved October 29, 2026
- Hospital General Information — CMS, data updated October 26, 2026, retrieved November 13, 2026
- National Downloadable File (Doctors and Clinicians) — CMS, data updated October 2, 2026, retrieved October 29, 2026
- 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