Benjamin Samuel Lopez, PA
Physician Assistant (PA) with Medamerica Physician Solutions PC, practicing in Walnut Creek, California. 213 Medicare patients in 2024, $21,889 paid; nearly all of their 154 Part D prescriptions were generic (95%). Solventum Corporation reported $25.56 in payments in 2025, mostly food and beverage. A record with the same name and state is on the OIG exclusion list; it carries no NPI, so check it before acting.
Overview
| NPI | 1881153187 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | PA |
| Sole proprietor | Yes |
| NPI issued | Mar 16, 2019 |
| Last updated in NPPES | Mar 7, 2022 |
| Certified by provider | Mar 7, 2022 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Physician Assistant Primary | 363A00000X | PA56556 | CA |
Exclusion screening
Possible match: verify before acting. The OIG list has a record with the same name in California, but that record carries no NPI, so it may be a different person or business.
| Matched by | Name on OIG list | Exclusion type | Excluded since | Location |
|---|---|---|---|---|
| Name + state | Benjamin Pineda Lopez · Owner/Operator | 1128a1 | Aug 20, 2003 | Soledad, CA |
| List | Result | Details |
|---|---|---|
| HHS-OIG LEIE · Nov 10, 2026 | Possible (name) | See above |
| 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 | 213 |
|---|---|
| Services billed | 348 across 30 procedure codes |
| Paid by Medicare | $21,889 |
Part D prescriptions in 2024
| Prescriptions (claims) | 154 · 157 30-day fills |
|---|---|
| Patients | 102 |
| Total drug cost | $3,176 |
| Generic share | 95% of claims |
Education and affiliations
| Graduation year | 2018 |
|---|---|
| Medicare specialty | Physician Assistant |
Medical group
- Medamerica Physician Solutions PCWalnut Creek, CA · 28 clinicians
Industry payments (Open Payments)
- 2025$25.56 · 1 payment from 1 company
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Solventum Corporation | $25.56 | 1 |
What the 2025 payments were for
- Food and Beverage$25.56 · 1 payment
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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All 95 physician assistants in Walnut Creek · All physician assistants in California