Stefania Villanueva
NPI 1295611341ActiveIndividual· Physician Assistant· Oxnard, CA
Physician Assistant in Oxnard, California, licensed in CA, with an NPI issued in August 2025. Enrolled in Medicare as practitioner - physician assistant. Astellas Pharma US Inc was the largest of 14 companies reporting payments in 2025, $639.24 in all, mostly food and beverage.
Overview
| NPI | 1295611341 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Sole proprietor | Yes |
| NPI issued | Aug 14, 2025 |
| Last updated in NPPES | Aug 14, 2026 |
| Certified by provider | Aug 14, 2026 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Physician Assistant Primary | 363A00000X | 66713 | 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) |
|---|
Education and affiliations
| Graduation year | 2024 |
|---|---|
| Medicare specialty | Physician Assistant |
Industry payments (Open Payments)
- 2025$639.24 · 22 payments from 14 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Astellas Pharma US Inc | $143.93 | 3 |
| Astrazeneca Pharmaceuticals LP | $73.79 | 3 |
| Regeneron Healthcare Solutions, Inc. | $67.05 | 2 |
| Merck Sharp & Dohme LLC | $64.35 | 2 |
| Genmab U.S., Inc. | $62.04 | 2 |
What the 2025 payments were for
- Food and Beverage$539.25 · 21 payments
- Education$99.99 · 1 payment
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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All 67 physician assistants in Oxnard · All physician assistants in California