Ryan H. Nakasone, D.C., P.A.-C
NPI 1043207459ActiveIndividual· Physician Assistant· Oxnard, CA
Physician Assistant (D.C., P.A.-C) in Oxnard, California, trained at Stanford University School of Medicine (class of 2012). Part D covered 4,549 prescriptions written in 2024, 90% of them generic. Abbvie Inc. was the largest of 15 companies reporting payments in 2025, $1,222 in all, mostly food and beverage.
Overview
| NPI | 1043207459 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | D.C., P.A.-C |
| Sole proprietor | Yes |
| NPI issued | Sep 30, 2005 |
| Last updated in NPPES | Apr 24, 2026 |
| Certified by provider | Apr 24, 2026 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Physician Assistant Primary | 363A00000X | PA22126 | CA |
| Chiropractor | 111N00000X | DC-24909 | 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) | 4,549 · 4,706 30-day fills |
|---|---|
| Patients | 287 |
| Total drug cost | $361,160 |
| Generic share | 90% of claims |
Education and affiliations
| Medical school | Stanford University School of Medicine |
|---|---|
| Graduation year | 2012 |
| Medicare specialty | Physician Assistant |
Medical groups
- Link Neuroscience Institute PCOxnard, CA · 16 clinicians
- Link In-Patient Services PCOxnard, CA · 12 clinicians
Hospital affiliation
- St Johns Regional Medical CenterOxnard, CA
Industry payments (Open Payments)
- 2025$1,222 · 44 payments from 15 companies
- 2024$3,511 · 136 payments from 22 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Abbvie Inc. | $276.63 | 12 |
| Medtronic, Inc. | $269.88 | 4 |
| Vertex Pharmaceuticals Incorporated | $152.64 | 3 |
| Spr Therapeutics, Inc | $80.17 | 2 |
| Collegium Pharmaceutical, Inc. | $77.48 | 5 |
What the 2025 payments were for
- Food and Beverage$1,222 · 44 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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All 67 physician assistants in Oxnard · All physician assistants in California