John J. Willems, M.D.
NPI 1184664591ActiveIndividual· Obstetrics & Gynecology· La Jolla, CA
Obstetrics & Gynecology (M.D.) in La Jolla, California, trained at New York Medical College (class of 1973). Their prescriptions cost Medicare Part D more than their services did: $58,566 for 507 claims, against $35,830 paid for services in 2024. Astellas Pharma US Inc was the largest of 5 companies reporting payments in 2025, $108.33 in all, mostly food and beverage.
Overview
| NPI | 1184664591 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | No |
| NPI issued | Jun 7, 2006 |
| Last updated in NPPES | Jun 30, 2009 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Obstetrics & Gynecology Primary | 207V00000X | G35952 | CA |
| Obstetrics & Gynecology, Reproductive Endocrinology | 207VE0102X | G35952 | 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) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 166 |
|---|---|
| Services billed | 947 across 21 procedure codes |
| Paid by Medicare | $35,830 |
Part D prescriptions in 2024
| Prescriptions (claims) | 507 · 1,082 30-day fills |
|---|---|
| Patients | 140 |
| Total drug cost | $58,566 |
| Generic share | 87% of claims |
Education and affiliations
| Medical school | New York Medical College |
|---|---|
| Graduation year | 1973 |
| Medicare specialty | Obstetrics/Gynecology |
| Telehealth | Offers telehealth |
Medical group
- Scripps HealthLa Jolla, CA · 1,433 clinicians
Hospital affiliations
- Scripps Green HospitalLa Jolla, CA
- Scripps Memorial Hospital la JollaLa Jolla, CA
Industry payments (Open Payments)
- 2025$108.33 · 5 payments from 5 companies
- 2024$247.11 · 3 payments from 2 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Astellas Pharma US Inc | $34.47 | 1 |
| Evofem Biosciences, Inc. | $23.73 | 1 |
| Hologic Sales and Service, LLC | $22.10 | 1 |
| Becton, Dickinson and Company | $19.31 | 1 |
| Mayne Pharma Commercial LLC | $8.72 | 1 |
What the 2025 payments were for
- Food and Beverage$108.33 · 5 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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