Andy Nguyen
Internal Medicine, Endocrinology, Diabetes & Metabolism in Westminster, California, trained at University of North Texas Hsc, College of Osteopathic Med (class of 2016). Part D covered 20 prescriptions written in 2024, 100% of them generic. Acadia Pharmaceuticals Inc was the largest of 3 companies reporting payments in 2025, $271.57 in all, mostly food and beverage. A record with the same name and state is on the OIG exclusion list; it carries no NPI, so check it before acting.
Overview
| NPI | 1851746028 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Sole proprietor | No |
| NPI issued | Apr 25, 2016 |
| Last updated in NPPES | Nov 1, 2021 |
| Certified by provider | Sep 21, 2021 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Endocrinology, Diabetes & Metabolism Primary | 207RE0101X | 20A17347 | CA |
| Internal Medicine | 207R00000X | 20A17347 | CA |
| Student in an Organized Health Care Education/Training Program | 390200000X | — | — |
Exclusion screening
Possible match: verify before acting. The OIG list has a record with the same name in California, but that record carries no NPI, so it may be a different person or business.
| Matched by | Name on OIG list | Exclusion type | Excluded since | Location |
|---|---|---|---|---|
| Name + state | Andy Huan Nguyen · Chiropractic | 1128b4 | Apr 18, 2013 | San Jose, CA |
| List | Result | Details |
|---|---|---|
| HHS-OIG LEIE · Oct 9, 2026 | Possible (name) | See above |
| North Carolina Medicaid · Nov 4, 2026 | No match | — |
| New York OMIG · Nov 4, 2026 | No match | — |
| Ohio Medicaid · Nov 4, 2026 | No match | — |
| Pennsylvania Medicheck · Nov 4, 2026 | No match | — |
| Washington HCA · Nov 4, 2026 | No match | — |
Official OIG search · How matching works ·Bulk check a roster
Medicare
| Enrollment (PECOS) | Enrolled Practitioner - Endocrinology (CA) |
|---|
Part D prescriptions in 2024
| Prescriptions (claims) | 20 · 54 30-day fills |
|---|---|
| Total drug cost | $223.41 |
| Generic share | 100% of claims |
Education and affiliations
| Medical school | University of North Texas Hsc, College of Osteopathic Med |
|---|---|
| Graduation year | 2016 |
| Medicare specialty | Endocrinology |
| Secondary specialties | Internal Medicine |
Industry payments (Open Payments)
- 2025$271.57 · 4 payments from 3 companies
- 2024$487.62 · 8 payments from 3 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Acadia Pharmaceuticals Inc | $121.83 | 1 |
| Kedrion Biopharma, Inc. | $103.79 | 1 |
| Bayer Healthcare Pharmaceuticals Inc. | $45.95 | 2 |
What the 2025 payments were for
- Food and Beverage$271.57 · 4 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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