Hai Nguyen, PA-C
NPI 1235411422ActiveIndividual· Physician Assistant· Westminster, CA
Physician Assistant (PA-C) in Westminster, California, licensed in CA, with an NPI issued in September 2011. Part D covered 179 prescriptions written in 2024, 83% of them generic. Biogen, Inc. was the largest of 10 companies reporting payments in 2025, $1,265 in all, mostly food and beverage.
Overview
| NPI | 1235411422 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | PA-C |
| Sole proprietor | No |
| NPI issued | Sep 13, 2011 |
| Last updated in NPPES | Sep 13, 2011 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Physician Assistant Primary | 363A00000X | PA 21659 | 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) | Not in the public enrollment file of Oct 1, 2026 |
|---|
Part D prescriptions in 2024
| Prescriptions (claims) | 179 · 369 30-day fills |
|---|---|
| Patients | 59 |
| Total drug cost | $14,998 |
| Generic share | 83% of claims |
Industry payments (Open Payments)
- 2025$1,265 · 41 payments from 10 companies
- 2024$429.68 · 20 payments from 10 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Biogen, Inc. | $438.49 | 16 |
| Mayne Pharma Commercial LLC | $420.47 | 8 |
| Exact Sciences Corporation | $95.55 | 4 |
| Astellas Pharma US Inc | $85.04 | 3 |
| Abbvie Inc. | $69.29 | 3 |
What the 2025 payments were for
- Food and Beverage$1,265 · 41 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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All 31 physician assistants in Westminster · All physician assistants in California