Tiffany Quyen Nguyen, PA-C
NPI 1356804587ActiveIndividual· Physician Assistant· Garden Grove, CA
Physician Assistant (PA-C) with Cardiology Specialists of Orange County, practicing in Garden Grove, California. Their prescriptions cost Medicare Part D more than their services did: $38,380 for 333 claims, against $20,463 paid for services in 2024. Novartis Pharmaceuticals Corporation was the largest of 8 companies reporting payments in 2025, $445.64 in all, mostly food and beverage. Lists Hoag Memorial Hospital Presbyterian as a hospital affiliation.
Overview
| NPI | 1356804587 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | PA-C |
| Sole proprietor | No |
| NPI issued | Apr 14, 2019 |
| Last updated in NPPES | Apr 27, 2020 |
| Certified by provider | Apr 27, 2020 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Physician Assistant Primary | 363A00000X | — | 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 | 186 |
|---|---|
| Services billed | 432 across 11 procedure codes |
| Paid by Medicare | $20,463 |
Part D prescriptions in 2024
| Prescriptions (claims) | 333 · 685 30-day fills |
|---|---|
| Patients | 110 |
| Total drug cost | $38,380 |
| Generic share | 88% of claims |
Education and affiliations
| Graduation year | 2018 |
|---|---|
| Medicare specialty | Physician Assistant |
| Telehealth | Offers telehealth |
Medical group
- Cardiology Specialists of Orange CountySanta Ana, CA · 9 clinicians
Hospital affiliation
- Hoag Memorial Hospital PresbyterianNewport Beach, CA
Industry payments (Open Payments)
- 2025$445.64 · 23 payments from 8 companies
- 2024$644.33 · 32 payments from 9 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Novartis Pharmaceuticals Corporation | $182.67 | 10 |
| Amgen Inc. | $95.04 | 5 |
| Pfizer Inc. | $48.13 | 2 |
| E.R. Squibb & Sons, L.L.C. | $48.13 | 2 |
| Tactile Systems Technology Inc | $19.60 | 1 |
What the 2025 payments were for
- Food and Beverage$445.64 · 23 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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All 40 physician assistants in Garden Grove · All physician assistants in California