Marissa Nicole Westerland, MD
NPI 1174137160ActiveIndividual· Family Medicine· Rohnert Park, CA
Family Medicine (MD) in Rohnert Park, California, trained at University of California, Davis School of Medicine (class of 2018). Part D covered 431 prescriptions written in 2024, 91% of them generic.
Overview
| NPI | 1174137160 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | No |
| NPI issued | Sep 7, 2020 |
| Last updated in NPPES | Sep 24, 2025 |
| Certified by provider | Sep 24, 2025 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Family Medicine Primary | 207Q00000X | 191052 | 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) |
|---|
Part D prescriptions in 2024
| Prescriptions (claims) | 431 · 1,037 30-day fills |
|---|---|
| Patients | 124 |
| Total drug cost | $28,561 |
| Generic share | 91% of claims |
Education and affiliations
| Medical school | University of California, Davis School of Medicine |
|---|---|
| Graduation year | 2018 |
| Medicare specialty | Family Practice |
Medical group
- Permanente Medical Group IncOakland, CA · 10,996 clinicians
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 35 family medicine physicians in Rohnert Park · All family medicine physicians in California