Gregory Larson, PA-C
NPI 1134577448ActiveIndividual· Physician Assistant· Spearfish, SD
Physician Assistant (PA-C) in Spearfish, South Dakota, trained at Yale University School of Medicine (class of 2011). Their prescriptions cost Medicare Part D more than their services did: $222,878 for 515 claims, against $77,276 paid for services in 2024. Genzyme Corporation was the largest of 13 companies reporting payments in 2025, $780.62 in all, mostly food and beverage.
Overview
| NPI | 1134577448 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | PA-C |
| Sole proprietor | No |
| NPI issued | May 26, 2016 |
| Last updated in NPPES | May 26, 2016 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Physician Assistant Primary | 363A00000X | 1039 | SD |
Exclusion screening
| List | Result | Details |
|---|---|---|
| HHS-OIG LEIE · Oct 9, 2026 | No match | Checked by NPI and by name + state |
| North Carolina Medicaid · Nov 10, 2026 | No match | — |
| New York OMIG · Nov 10, 2026 | No match | — |
| Ohio Medicaid · Nov 10, 2026 | No match | — |
| Pennsylvania Medicheck · Nov 10, 2026 | No match | — |
| Washington HCA · Nov 10, 2026 | No match | — |
Official OIG search · How matching works ·Bulk check a roster
Medicare
| Enrollment (PECOS) | Enrolled Practitioner - Physician Assistant (CO); Practitioner - Physician Assistant (SD) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 489 |
|---|---|
| Services billed | 1,977 across 57 procedure codes |
| Paid by Medicare | $77,276 |
Part D prescriptions in 2024
| Prescriptions (claims) | 515 · 592 30-day fills |
|---|---|
| Patients | 273 |
| Total drug cost | $222,878 |
| Generic share | 82% of claims |
Education and affiliations
| Medical school | Yale University School of Medicine |
|---|---|
| Graduation year | 2011 |
| Medicare specialty | Physician Assistant |
Medical group
- Hill Center for Dermatology, PCGolden, CO · 7 clinicians
Hospital affiliation
- St. George Regional HospitalSt George, UT
Industry payments (Open Payments)
- 2025$780.62 · 32 payments from 13 companies
- 2024$434.80 · 12 payments from 7 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Genzyme Corporation | $258.76 | 8 |
| Regeneron Healthcare Solutions, Inc. | $128.57 | 4 |
| Abbvie Inc. | $64.03 | 3 |
| Janssen Biotech, Inc. | $59.20 | 3 |
| Novartis Pharmaceuticals Corporation | $54.25 | 2 |
What the 2025 payments were for
- Food and Beverage$780.62 · 32 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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