John David Stack, PA
NPI 1629170592ActiveIndividual· Physician Assistant· Oroville, CA
Physician Assistant (PA) in Oroville, California, licensed in CA, with an NPI issued in September 2006. Part D covered 7,168 prescriptions written in 2024, 76% of them generic. Abbvie Inc. was the largest of 9 companies reporting payments in 2025, $706.20 in all, mostly food and beverage.
Overview
| NPI | 1629170592 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | PA |
| Sole proprietor | No |
| NPI issued | Sep 2, 2006 |
| Last updated in NPPES | Feb 11, 2011 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Physician Assistant Primary | 363A00000X | PA13683 | 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) |
|---|
Part D prescriptions in 2024
| Prescriptions (claims) | 7,168 · 13,759 30-day fills |
|---|---|
| Patients | 250 |
| Total drug cost | $1,171,321 |
| Generic share | 76% of claims |
Industry payments (Open Payments)
- 2025$706.20 · 36 payments from 9 companies
- 2024$862.32 · 47 payments from 12 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Abbvie Inc. | $293.59 | 17 |
| Novo Nordisk Inc | $90.98 | 4 |
| Iti, Inc. (D/B/A Intra-Cellular Therapies, Inc.) | $79.54 | 3 |
| Glaxosmithkline, LLC. | $72.47 | 3 |
| Astrazeneca Pharmaceuticals LP | $55.63 | 3 |
What the 2025 payments were for
- Food and Beverage$706.20 · 36 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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All 36 physician assistants in Oroville · All physician assistants in California