Nicholas Thanh Tran, M.D.
NPI 1265498349ActiveIndividual· Internal Medicine, Endocrinology, Diabetes & Metabolism· Westminster, CA
Internal Medicine, Endocrinology, Diabetes & Metabolism (M.D.) in Westminster, California, trained at University of Southern California Keck School of Medicine (class of 1995). Their prescriptions cost Medicare Part D more than their services did: $2,613,900 for 8,687 claims, against $81,034 paid for services in 2024. Amgen Inc. was the largest of 17 companies reporting payments in 2025, $2,444 in all, mostly food and beverage.
Overview
| NPI | 1265498349 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | No |
| NPI issued | Apr 26, 2006 |
| Last updated in NPPES | Jul 13, 2026 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Endocrinology, Diabetes & Metabolism Primary | 207RE0101X | A67914 | CA |
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 - Internal Medicine (CA) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 217 |
|---|---|
| Services billed | 1,437 across 13 procedure codes |
| Paid by Medicare | $81,034 |
Part D prescriptions in 2024
| Prescriptions (claims) | 8,687 · 13,993 30-day fills |
|---|---|
| Patients | 331 |
| Total drug cost | $2,613,900 |
| Generic share | 55% of claims |
Education and affiliations
| Medical school | University of Southern California Keck School of Medicine |
|---|---|
| Graduation year | 1995 |
| Medicare specialty | Internal Medicine |
| Secondary specialties | Endocrinology |
Industry payments (Open Payments)
- 2025$2,444 · 41 payments from 17 companies
- 2024$2,833 · 57 payments from 15 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Amgen Inc. | $358.45 | 5 |
| Gilead Sciences, Inc. | $275.00 | 2 |
| Lilly USA, LLC | $259.53 | 6 |
| Aimmune Therapeutics, Inc. | $249.50 | 2 |
| Astrazeneca Pharmaceuticals LP | $241.13 | 2 |
What the 2025 payments were for
- Food and Beverage$2,402 · 40 payments
- Education$42.50 · 1 payment
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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