An Nguyen
NPI 1609434414ActiveIndividual· Hospitalist· Irvine, CA
Hospitalist with Pacific Hospitalist Associates A Medical Corporation, practicing in Irvine, California. Mostly services rather than prescriptions: Medicare paid $22,850 for 153 patients in 2024, with only 40 Part D claims. Amgen Inc. reported $112.92 in payments in 2025, mostly food and beverage. Lists Hoag Memorial Hospital Presbyterian as a hospital affiliation.
Overview
| NPI | 1609434414 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Sole proprietor | Yes |
| NPI issued | Jun 5, 2019 |
| Last updated in NPPES | Jul 2, 2024 |
| Certified by provider | Jul 2, 2024 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Hospitalist Primary | 208M00000X | A179690 | CA |
| Internal Medicine | 207R00000X | A179690 | 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 - Internal Medicine (CA) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 153 |
|---|---|
| Services billed | 235 across 8 procedure codes |
| Paid by Medicare | $22,850 |
Part D prescriptions in 2024
| Prescriptions (claims) | 40 · 49 30-day fills |
|---|---|
| Patients | 15 |
| Total drug cost | $410.82 |
| Generic share | 93% of claims |
Education and affiliations
| Graduation year | 2019 |
|---|---|
| Medicare specialty | Internal Medicine |
Medical group
- Pacific Hospitalist Associates A Medical CorporationNewport Beach, CA · 93 clinicians
Hospital affiliation
- Hoag Memorial Hospital PresbyterianNewport Beach, CA
Industry payments (Open Payments)
- 2025$112.92 · 1 payment from 1 company
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Amgen Inc. | $112.92 | 1 |
What the 2025 payments were for
- Food and Beverage$112.92 · 1 payment
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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All 50 hospitalists in Irvine · All hospitalists in California