Benjamin Ross Frimmer, MS, PA-C
NPI 1104374883ActiveIndividual· Physician Assistant· San Luis Obispo, CA
Physician Assistant (MS, PA-C) with Adventist Health Physicians Network and 1 other group, practicing in San Luis Obispo, California. Their prescriptions cost Medicare Part D more than their services did: $348,855 for 3,631 claims, against $54,862 paid for services in 2024. Lists Adventist Health Sierra Vista and 2 other hospitals as hospital affiliations.
Overview
| NPI | 1104374883 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MS, PA-C |
| Sole proprietor | No |
| NPI issued | Sep 12, 2016 |
| Last updated in NPPES | Jul 31, 2025 |
| Certified by provider | Jul 31, 2025 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Physician Assistant Primary | 363A00000X | 53749 | CA |
Exclusion screening
| List | Result | Details |
|---|---|---|
| HHS-OIG LEIE · Nov 10, 2026 | No match | Checked by NPI and by name + state |
| North Carolina Medicaid · Nov 11, 2026 | No match | — |
| New York OMIG · Nov 11, 2026 | No match | — |
| Ohio Medicaid · Nov 11, 2026 | No match | — |
| Pennsylvania Medicheck · Nov 11, 2026 | No match | — |
| Washington HCA · Nov 11, 2026 | No match | — |
Official OIG search · How matching works ·Bulk check a roster
Medicare
| Enrollment (PECOS) | Enrolled Practitioner - Physician Assistant (CA) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 285 |
|---|---|
| Services billed | 1,282 across 15 procedure codes |
| Paid by Medicare | $54,862 |
Part D prescriptions in 2024
| Prescriptions (claims) | 3,631 · 8,988 30-day fills |
|---|---|
| Patients | 416 |
| Total drug cost | $348,855 |
| Generic share | 89% of claims |
Education and affiliations
| Graduation year | 2016 |
|---|---|
| Medicare specialty | Physician Assistant |
| Telehealth | Offers telehealth |
Medical groups
- Adventist Health Physicians NetworkSaint Helena, CA · 628 clinicians
- Cottage Clinical Network LLCSanta Maria, CA · 56 clinicians
Hospital affiliations
- Adventist Health Sierra VistaSan Luis Obispo, CA
- French Hospital Medical CenterSan Luis Obispo, CA
- Marian Regional Medical CenterSanta Maria, CA
Industry payments (Open Payments)
None reported for 2025 or 2024.
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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All 59 physician assistants in San Luis Obispo · All physician assistants in California