William A. Martinez, PA-C
NPI 1124161120ActiveIndividual· Physician Assistant, Medical· Los Angeles, CA
Physician Assistant, Medical (PA-C) with Samaritana Medical Clinic,inc., practicing in Los Angeles, California. Their prescriptions cost Medicare Part D more than their services did: $2,029,756 for 14,659 claims, against $52,000 paid for services in 2024. Novartis Pharmaceuticals Corporation was the largest of 2 companies reporting payments in 2025, $57.91 in all, mostly food and beverage.
Overview
| NPI | 1124161120 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | PA-C |
| Sole proprietor | Yes |
| NPI issued | Feb 15, 2007 |
| Last updated in NPPES | Jul 8, 2007 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Physician Assistant, Medical Primary | 363AM0700X | PA15129 | 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) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 243 |
|---|---|
| Services billed | 2,786 across 60 procedure codes |
| Paid by Medicare | $52,000 |
Part D prescriptions in 2024
| Prescriptions (claims) | 14,659 · 31,296 30-day fills |
|---|---|
| Patients | 742 |
| Total drug cost | $2,029,756 |
| Generic share | 79% of claims |
Education and affiliations
| Graduation year | 1999 |
|---|---|
| Medicare specialty | Physician Assistant |
Medical group
- Samaritana Medical Clinic,inc.Los Angeles, CA · 14 clinicians
Industry payments (Open Payments)
- 2025$57.91 · 3 payments from 2 companies
- 2024$246.31 · 12 payments from 5 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Novartis Pharmaceuticals Corporation | $31.84 | 2 |
| Novo Nordisk Inc | $26.07 | 1 |
What the 2025 payments were for
- Food and Beverage$57.91 · 3 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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