James Dale Williamson Jr., PA-C
NPI 1306072046ActiveIndividual· Physician Assistant, Medical· Modesto, CA
Physician Assistant, Medical (PA-C) in Modesto, California, with an NPI issued in June 2009. Their prescriptions cost Medicare Part D more than their services did: $1,010,805 for 6,293 claims, against $11,436 paid for services in 2024. Corcept Therapeutics was the largest of 2 companies reporting payments in 2025, $814.42 in all, mostly food and beverage.
Overview
| NPI | 1306072046 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | PA-C |
| Sole proprietor | No |
| NPI issued | Jun 9, 2009 |
| Last updated in NPPES | Aug 5, 2026 |
| Certified by provider | Aug 5, 2026 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Physician Assistant, Medical Primary | 363AM0700X | — | — |
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) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 127 |
|---|---|
| Services billed | 148 across 12 procedure codes |
| Paid by Medicare | $11,436 |
Part D prescriptions in 2024
| Prescriptions (claims) | 6,293 · 12,472 30-day fills |
|---|---|
| Patients | 432 |
| Total drug cost | $1,010,805 |
| Generic share | 87% of claims |
Industry payments (Open Payments)
- 2025$814.42 · 66 payments from 2 companies
- 2024$566.84 · 22 payments from 6 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Corcept Therapeutics | $666.47 | 58 |
| Novo Nordisk Inc | $147.95 | 8 |
What the 2025 payments were for
- Food and Beverage$814.42 · 66 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
Other physician assistants in Modesto
- 1306895651
- 1760120927
- 1720052418
- 1720061716
- 1811394976
- 1134620263
- 1174606800
- 1326155052
- 1548805427
- 1730594078
- 1265415525
- 1598264103
All 39 physician assistants in Modesto · All physician assistants in California