Oi Y. Chung, P.A.,N.P.
NPI 1104085893ActiveIndividual· Physician Assistant· Monterey Park, CA
Physician Assistant (P.A.,N.P.) in Monterey Park, California, licensed in CA, with an NPI issued in June 2008. Part D covered 1,120 prescriptions written in 2024, 69% of them generic. Gilead Sciences, Inc. was the largest of 5 companies reporting payments in 2025, $267.15 in all, mostly food and beverage.
Overview
| NPI | 1104085893 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | P.A.,N.P. |
| Sole proprietor | No |
| NPI issued | Jun 6, 2008 |
| Last updated in NPPES | Sep 17, 2024 |
| Certified by provider | Sep 17, 2024 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Physician Assistant Primary | 363A00000X | PA19610 | CA |
| Nurse Practitioner | 363L00000X | NP584426 | 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) | 1,120 · 1,259 30-day fills |
|---|---|
| Patients | 466 |
| Total drug cost | $486,201 |
| Generic share | 69% of claims |
Industry payments (Open Payments)
- 2025$267.15 · 12 payments from 5 companies
- 2024$1,251 · 33 payments from 6 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Gilead Sciences, Inc. | $107.72 | 5 |
| Madrigal Pharmaceuticals | $57.30 | 2 |
| Phathom Pharmaceuticals, Inc. | $52.93 | 3 |
| Ardelyx, Inc. | $27.70 | 1 |
| Abbvie Inc. | $21.50 | 1 |
What the 2025 payments were for
- Food and Beverage$267.15 · 12 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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All 24 physician assistants in Monterey Park · All physician assistants in California