Katharine Willoughby, MD
NPI 1053643684ActiveIndividual· Obstetrics & Gynecology· Stanford, CA
Obstetrics & Gynecology (MD) in Stanford, California, trained at University of California, Davis School of Medicine (class of 2008). Part D covered 135 prescriptions written in 2024, 82% of them generic.
Overview
| NPI | 1053643684 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | No |
| NPI issued | Feb 7, 2010 |
| Last updated in NPPES | Dec 15, 2021 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Obstetrics & Gynecology Primary | 207V00000X | A110248 | 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 - Obstetrics/Gynecology (CA) |
|---|
Part D prescriptions in 2024
| Prescriptions (claims) | 135 · 383 30-day fills |
|---|---|
| Patients | 90 |
| Total drug cost | $10,666 |
| Generic share | 82% of claims |
Education and affiliations
| Medical school | University of California, Davis School of Medicine |
|---|---|
| Graduation year | 2008 |
| Medicare specialty | Obstetrics/Gynecology |
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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