Minhthao Thi Nguyen, DO
NPI 1013408343ActiveIndividual· Internal Medicine, Endocrinology, Diabetes & Metabolism· Westminster, CA
Internal Medicine, Endocrinology, Diabetes & Metabolism (DO) in Westminster, California, trained at At Still Un of Hlth Sciences, Col of Osteo Med, Mesa (class of 2018). In 2024 Medicare paid $152,953 for 229 patients, and Part D covered 400 of their prescriptions, 44% of them generic. Amgen Inc. was the largest of 11 companies reporting payments in 2025, $516.16 in all, mostly food and beverage.
Overview
| NPI | 1013408343 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | DO |
| Sole proprietor | Yes |
| NPI issued | May 22, 2018 |
| Last updated in NPPES | Apr 20, 2024 |
| Certified by provider | Apr 20, 2024 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Endocrinology, Diabetes & Metabolism Primary | 207RE0101X | 20A18758 | CA |
| General Acute Care Hospital | 282N00000X | — | — |
Exclusion screening
| List | Result | Details |
|---|---|---|
| HHS-OIG LEIE · Oct 9, 2026 | No match | Checked by NPI and by name + state |
| 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) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 229 |
|---|---|
| Services billed | 1,542 across 17 procedure codes |
| Paid by Medicare | $152,953 |
Part D prescriptions in 2024
| Prescriptions (claims) | 400 · 825 30-day fills |
|---|---|
| Patients | 103 |
| Total drug cost | $143,672 |
| Generic share | 44% of claims |
Education and affiliations
| Medical school | At Still Un of Hlth Sciences, Col of Osteo Med, Mesa |
|---|---|
| Graduation year | 2018 |
| Medicare specialty | Endocrinology |
Hospital affiliations
- Memorialcare Orange Coast Medical CenterFountain Valley, CA
- Uci Health-OrangeOrange, CA
Industry payments (Open Payments)
- 2025$516.16 · 25 payments from 11 companies
- 2024$1,176 · 28 payments from 11 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Amgen Inc. | $223.69 | 10 |
| Mannkind Corporation | $58.66 | 2 |
| Novo Nordisk Inc | $50.08 | 3 |
| Dexcom, Inc. | $48.34 | 3 |
| Insulet Corporation | $34.25 | 1 |
What the 2025 payments were for
- Food and Beverage$473.66 · 24 payments
- Education$42.50 · 1 payment
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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