Theodora Pham Nguyen, PA-C
NPI 1194303958ActiveIndividual· Physician Assistant· Irvine, CA
Physician Assistant (PA-C) with City of Hope Medical Foundation, practicing in Irvine, California. Mostly services rather than prescriptions: Medicare paid $18,284 for 148 patients in 2024, with only 23 Part D claims. Astrazeneca Pharmaceuticals LP was the largest of 3 companies reporting payments in 2025, $482.82 in all, mostly food and beverage.
Overview
| NPI | 1194303958 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | PA-C |
| Sole proprietor | No |
| NPI issued | Mar 31, 2021 |
| Last updated in NPPES | Jan 15, 2026 |
| Certified by provider | Jan 15, 2026 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Physician Assistant Primary | 363A00000X | PA59501 | CA |
Exclusion screening
| List | Result | Details |
|---|---|---|
| HHS-OIG LEIE · Oct 9, 2026 | No match | Checked by NPI and by name + state |
| North Carolina Medicaid · Nov 10, 2026 | No match | — |
| New York OMIG · Nov 10, 2026 | No match | — |
| Ohio Medicaid · Nov 10, 2026 | No match | — |
| Pennsylvania Medicheck · Nov 10, 2026 | No match | — |
| Washington HCA · Nov 10, 2026 | No match | — |
Official OIG search · How matching works ·Bulk check a roster
Medicare
| Enrollment (PECOS) | Enrolled Practitioner - Physician Assistant (CA) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 148 |
|---|---|
| Services billed | 298 across 20 procedure codes |
| Paid by Medicare | $18,284 |
Part D prescriptions in 2024
| Prescriptions (claims) | 23 · 23 30-day fills |
|---|---|
| Patients | 13 |
| Total drug cost | $106.31 |
| Generic share | 100% of claims |
Education and affiliations
| Graduation year | 2021 |
|---|---|
| Medicare specialty | Physician Assistant |
Medical group
- City of Hope Medical FoundationDuarte, CA · 982 clinicians
Industry payments (Open Payments)
- 2025$482.82 · 4 payments from 3 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Astrazeneca Pharmaceuticals LP | $242.74 | 2 |
| Vertex Pharmaceuticals Incorporated | $120.25 | 1 |
| Novo Nordisk Inc | $119.83 | 1 |
What the 2025 payments were for
- Food and Beverage$482.82 · 4 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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