Haley Nguyen
NPI 1194291484ActiveIndividual· Physician Assistant· Tustin, CA
Physician Assistant in Tustin, California, with an NPI issued in October 2018. Part D covered 1,889 prescriptions written in 2024, 79% of them generic. Dexcom, Inc. was the largest of 13 companies reporting payments in 2025, $940.35 in all, mostly food and beverage.
Overview
| NPI | 1194291484 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Sole proprietor | No |
| NPI issued | Oct 15, 2018 |
| Last updated in NPPES | Jul 26, 2024 |
| Certified by provider | Jul 26, 2024 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Physician Assistant Primary | 363A00000X | — | — |
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) | 1,889 · 3,819 30-day fills |
|---|---|
| Patients | 639 |
| Total drug cost | $492,269 |
| Generic share | 79% of claims |
Industry payments (Open Payments)
- 2025$940.35 · 27 payments from 13 companies
- 2024$562.22 · 11 payments from 9 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Dexcom, Inc. | $297.58 | 5 |
| Insulet Corporation | $213.49 | 3 |
| Gilead Sciences, Inc. | $136.45 | 5 |
| Amgen Inc. | $48.85 | 2 |
| Novo Nordisk Inc | $44.63 | 2 |
What the 2025 payments were for
- Food and Beverage$940.35 · 27 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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