Tammy Thu Nguyen, PA-C
NPI 1073980843ActiveIndividual· Physician Assistant· Santa Ana, CA
Physician Assistant (PA-C) with Southern California Permanente Medical Group, practicing in Santa Ana, California. Their prescriptions cost Medicare Part D more than their services did: $16,130 for 470 claims, against $2,441 paid for services in 2024. Gilead Sciences, Inc. reported $20.51 in payments in 2024, mostly food and beverage.
Overview
| NPI | 1073980843 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | PA-C |
| Sole proprietor | No |
| NPI issued | Aug 28, 2015 |
| Last updated in NPPES | Dec 3, 2021 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Physician Assistant Primary | 363A00000X | 52707 | 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) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 21 |
|---|---|
| Services billed | 43 across 10 procedure codes |
| Paid by Medicare | $2,441 |
Part D prescriptions in 2024
| Prescriptions (claims) | 470 · 572 30-day fills |
|---|---|
| Patients | 237 |
| Total drug cost | $16,130 |
| Generic share | 95% of claims |
Education and affiliations
| Graduation year | 2015 |
|---|---|
| Medicare specialty | Physician Assistant |
Medical group
- Southern California Permanente Medical GroupRedlands, CA · 11,293 clinicians
Industry payments (Open Payments)
- 2024$20.51 · 1 payment from 1 company
Top paying companies in 2024
| Company | Amount | Payments |
|---|---|---|
| Gilead Sciences, Inc. | $20.51 | 1 |
What the 2024 payments were for
- Food and Beverage$20.51 · 1 payment
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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