John Louis Peterson, MD
NPI 1891729109ActiveIndividual· Dermatology· Monterey, CA
Dermatology (MD) in Monterey, California, trained at University of Utah School of Medicine (class of 1978). Part D covered 868 prescriptions written in 2024, 93% of them generic. Incyte Corporation was the largest of 4 companies reporting payments in 2025, $147.62 in all, mostly food and beverage.
Overview
| NPI | 1891729109 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | Yes |
| NPI issued | Jul 10, 2006 |
| Last updated in NPPES | Jan 14, 2019 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Dermatology Primary | 207N00000X | G58431 | CA |
| Dermatology | 207N00000X | 1862071205 | UT |
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 - Dermatology (CA) |
|---|
Part D prescriptions in 2024
| Prescriptions (claims) | 868 · 979 30-day fills |
|---|---|
| Patients | 332 |
| Total drug cost | $249,295 |
| Generic share | 93% of claims |
Education and affiliations
| Medical school | University of Utah School of Medicine |
|---|---|
| Graduation year | 1978 |
| Medicare specialty | Dermatology |
Medical group
- Golden State Dermatology Associates, Inc.Saint Helena, CA · 125 clinicians
Industry payments (Open Payments)
- 2025$147.62 · 6 payments from 4 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Incyte Corporation | $53.96 | 2 |
| Janssen Biotech, Inc. | $52.47 | 2 |
| Regeneron Healthcare Solutions, Inc. | $21.39 | 1 |
| Novartis Pharmaceuticals Corporation | $19.80 | 1 |
What the 2025 payments were for
- Food and Beverage$147.62 · 6 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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All 25 dermatologists in Monterey · All dermatologists in California