Tammy Tuyet Nguyen, PA-C
NPI 1326682428ActiveIndividual· Physician Assistant· Los Alamitos, CA
Physician Assistant (PA-C) with Healthcare Partners Affiliates Medical Group, practicing in Los Alamitos, California. Their prescriptions cost Medicare Part D more than their services did: $84,920 for 1,602 claims, against $27,190 paid for services in 2024. Inspire Medical Systems, Inc. reported $26.66 in payments in 2025, mostly food and beverage. Lists Hoag Memorial Hospital Presbyterian and 2 other hospitals as hospital affiliations.
Overview
| NPI | 1326682428 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | PA-C |
| Sole proprietor | Yes |
| NPI issued | Oct 31, 2019 |
| Last updated in NPPES | Nov 24, 2025 |
| Certified by provider | Nov 24, 2025 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Physician Assistant Primary | 363A00000X | 59081 | 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 | 253 |
|---|---|
| Services billed | 459 across 30 procedure codes |
| Paid by Medicare | $27,190 |
Part D prescriptions in 2024
| Prescriptions (claims) | 1,602 · 3,225 30-day fills |
|---|---|
| Patients | 529 |
| Total drug cost | $84,920 |
| Generic share | 92% of claims |
Education and affiliations
| Graduation year | 2020 |
|---|---|
| Medicare specialty | Physician Assistant |
| Telehealth | Offers telehealth |
Medical group
- Healthcare Partners Affiliates Medical GroupAnaheim, CA · 754 clinicians
Hospital affiliations
- Hoag Memorial Hospital PresbyterianNewport Beach, CA
- Memorialcare Long Beach Medical CenterLong Beach, CA
- Uci Health-OrangeOrange, CA
Industry payments (Open Payments)
- 2025$26.66 · 1 payment from 1 company
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Inspire Medical Systems, Inc. | $26.66 | 1 |
What the 2025 payments were for
- Food and Beverage$26.66 · 1 payment
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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All 30 physician assistants in Los Alamitos · All physician assistants in California