James William Tinkelenberg, PA-C
NPI 1205978392ActiveIndividual· Physician Assistant· Mad River, CA
Physician Assistant (PA-C) in Mad River, California, trained at University of California, Davis School of Medicine (class of 2006). Their prescriptions cost Medicare Part D more than their services did: $727,596 for 5,553 claims, against $787.87 paid for services in 2024. Novo Nordisk Inc was the largest of 5 companies reporting payments in 2025, $163.98 in all, mostly food and beverage.
Overview
| NPI | 1205978392 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | PA-C |
| Sole proprietor | No |
| NPI issued | Feb 13, 2007 |
| Last updated in NPPES | Dec 12, 2014 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Physician Assistant Primary | 363A00000X | 19044 | 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 | 43 |
|---|---|
| Services billed | 82 across 4 procedure codes |
| Paid by Medicare | $787.87 |
Part D prescriptions in 2024
| Prescriptions (claims) | 5,553 · 9,926 30-day fills |
|---|---|
| Patients | 282 |
| Total drug cost | $727,596 |
| Generic share | 83% of claims |
Education and affiliations
| Medical school | University of California, Davis School of Medicine |
|---|---|
| Graduation year | 2006 |
| Medicare specialty | Physician Assistant |
Medical group
- The Wecare Group, IncMad River, CA · 2 clinicians
Hospital affiliations
- Mad River Community HospitalArcata, CA
- Providence Redwood Memorial HospitalFortuna, CA
- Providence St Joseph HospitalEureka, CA
- Trinity HospitalWeaverville, CA
Industry payments (Open Payments)
- 2025$163.98 · 5 payments from 5 companies
- 2024$106.81 · 6 payments from 4 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Novo Nordisk Inc | $80.77 | 1 |
| Exact Sciences Corporation | $24.51 | 1 |
| Optos, Inc. | $22.60 | 1 |
| Iti, Inc. (D/B/A Intra-Cellular Therapies, Inc.) | $21.51 | 1 |
| Bayer Healthcare Pharmaceuticals Inc. | $14.59 | 1 |
What the 2025 payments were for
- Food and Beverage$141.38 · 4 payments
- Entertainment$22.60 · 1 payment
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
Other physician assistants in Mad River
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