Mara Berezniak, D.O.
NPI 1770535585ActiveIndividual· Family Medicine· Penn Valley, CA
Family Medicine (D.O.) with Sierra Nevada Primary Care Physicians A Medical Corporation, practicing in Penn Valley, California. Their prescriptions cost Medicare Part D more than their services did: $411,336 for 6,886 claims, against $153,836 paid for services in 2024. Novo Nordisk Inc was the largest of 2 companies reporting payments in 2025, $63.92 in all, mostly food and beverage. Lists Sierra Nevada Memorial Hospital and 1 other hospital as hospital affiliations.
Overview
| NPI | 1770535585 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | D.O. |
| Sole proprietor | No |
| NPI issued | May 17, 2006 |
| Last updated in NPPES | Oct 24, 2025 |
| Certified by provider | Oct 24, 2025 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Family Medicine Primary | 207Q00000X | 20A7940 | 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 - Family Practice (CA) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 561 |
|---|---|
| Services billed | 7,418 across 44 procedure codes |
| Paid by Medicare | $153,836 |
Part D prescriptions in 2024
| Prescriptions (claims) | 6,886 · 15,627 30-day fills |
|---|---|
| Patients | 750 |
| Total drug cost | $411,336 |
| Generic share | 92% of claims |
Education and affiliations
| Graduation year | 2000 |
|---|---|
| Medicare specialty | Family Practice |
Medical group
- Sierra Nevada Primary Care Physicians A Medical CorporationPenn Valley, CA · 5 clinicians
Hospital affiliations
- Sierra Nevada Memorial HospitalGrass Valley, CA
- Sutter Medical Center, SacramentoSacramento, CA
Other facilities
- Progressive Home Care - AuburnHome health agency · Auburn, CA
- Golden EmpireNursing home · Grass Valley, CA
Industry payments (Open Payments)
- 2025$63.92 · 3 payments from 2 companies
- 2024$17.87 · 1 payment from 1 company
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Novo Nordisk Inc | $42.72 | 2 |
| Lilly USA, LLC | $21.20 | 1 |
What the 2025 payments were for
- Food and Beverage$63.92 · 3 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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