Gregory Scott Davidson, PA
NPI 1154809044ActiveIndividual· Physician Assistant· Murrieta, CA
Physician Assistant (PA) in Murrieta, California, trained at Loma Linda University School of Medicine (class of 2018). Their prescriptions cost Medicare Part D more than their services did: $35,868 for 1,103 claims, against $9,699 paid for services in 2024. Regeneron Healthcare Solutions, Inc. was the largest of 15 companies reporting payments in 2025, $2,306 in all, mostly food and beverage.
Overview
| NPI | 1154809044 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | PA |
| Sole proprietor | No |
| NPI issued | Aug 1, 2018 |
| Last updated in NPPES | Jan 13, 2023 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Physician Assistant Primary | 363A00000X | — | — |
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 | 74 |
|---|---|
| Services billed | 269 across 21 procedure codes |
| Paid by Medicare | $9,699 |
Part D prescriptions in 2024
| Prescriptions (claims) | 1,103 · 1,224 30-day fills |
|---|---|
| Patients | 687 |
| Total drug cost | $35,868 |
| Generic share | 91% of claims |
Education and affiliations
| Medical school | Loma Linda University School of Medicine |
|---|---|
| Graduation year | 2018 |
| Medicare specialty | Physician Assistant |
Medical group
- Pacific Dermatology InstituteVictorville, CA · 32 clinicians
Industry payments (Open Payments)
- 2025$2,306 · 123 payments from 15 companies
- 2024$232.49 · 5 payments from 4 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Regeneron Healthcare Solutions, Inc. | $526.42 | 20 |
| Incyte Corporation | $233.32 | 19 |
| Arcutis Biotherapeutics, Inc. | $231.89 | 9 |
| Amgen Inc. | $204.72 | 14 |
| Genzyme Corporation | $179.10 | 7 |
What the 2025 payments were for
- Food and Beverage$2,136 · 121 payments
- Education$169.86 · 2 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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All 53 physician assistants in Murrieta · All physician assistants in California