Quick answers
- Which hospitals does Olga Grigorieva-Olson work at?
- Medicare's official clinician data lists Olga Grigorieva-Olson at 4 hospitals: Adventist Health Sierra Vista, Adventist Health Twin Cities, French Hospital Medical Center and Marian Regional Medical Center. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Olga Grigorieva-Olson see patients?
- Medicare's clinician data lists 4 practice locations, including San Luis Obispo, CA, Templeton, CA and Glendale, CA. Call before your visit to confirm the address.
- What is Olga Grigorieva-Olson's specialty?
- Medicare lists Internal Medicine as the primary specialty.
- Does Olga Grigorieva-Olson accept Medicare assignment?
- Yes. Medicare's clinician data says Olga Grigorieva-Olson 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 Olga Grigorieva-Olson?
- (805) 546-7600, as listed in official Medicare / NPI Registry data.
- What is Olga Grigorieva-Olson's NPI number?
- 1780046243. 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 Grigorieva-Olson works
Medicare's Facility Affiliation Data lists Olga Grigorieva-Olson at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Adventist Health Sierra VistaSan Luis Obispo, CA · Acute Care Hospital · CCN 050506
- Adventist Health Twin CitiesTempleton, CA · Acute Care Hospital · CCN 050633
- French Hospital Medical CenterSan Luis Obispo, CA · Acute Care Hospital · CCN 050232
- Marian Regional Medical CenterSanta Maria, CA · Acute Care Hospital · CCN 050107
Practice locations
Addresses where Olga Grigorieva-Olson is enrolled with Medicare (CMS data updated 2026-10-02).
- 1010 Murray AveSan Luis Obispo, CA 93405 (805) 546‑7600
- 1100 Las Tablas RdTempleton, CA 93465 (805) 434‑3500
- 1509 Wilson TerGlendale, CA 91206 (818) 409‑8000
- 1911 Johnson AveSan Luis Obispo, CA 93401 (805) 543‑5353
Group practices
Medicare enrollment lists Olga Grigorieva-Olson as a member of these groups (CMS data updated 2026-10-02).
- Galen Inpatient Physicians PC1,077 clinicians in the group
- Vituity Hospitalists PC79 clinicians in the group
Specialties
- Internal Medicineprimary
Other internal medicine doctors in San Luis Obispo
Clinicians with the same Medicare primary specialty in San Luis Obispo, CA — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Graduation year | 1999 |
| Gender (as listed) | Female |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1780046243 |
| 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