Thang D. Nguyen, MD
NPI 1013916048ActiveIndividual· Internal Medicine· Sun City, CA
Internal Medicine (MD) in Sun City, California, licensed in CA, with an NPI issued in July 2005. Their prescriptions cost Medicare Part D more than their services did: $493,321 for 6,176 claims, against $55,126 paid for services in 2024. Astrazeneca Pharmaceuticals LP was the largest of 8 companies reporting payments in 2025, $629.13 in all, mostly food and beverage.
Overview
| NPI | 1013916048 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | Yes |
| NPI issued | Jul 20, 2005 |
| Last updated in NPPES | Nov 24, 2009 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine Primary | 207R00000X | A78238 | 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 | 171 |
|---|---|
| Services billed | 583 across 16 procedure codes |
| Paid by Medicare | $55,126 |
Part D prescriptions in 2024
| Prescriptions (claims) | 6,176 · 13,251 30-day fills |
|---|---|
| Patients | 430 |
| Total drug cost | $493,321 |
| Generic share | 87% of claims |
Education and affiliations
| Graduation year | 1997 |
|---|---|
| Medicare specialty | Internal Medicine |
| Telehealth | Offers telehealth |
Other facilities
- Kindred Hospital RiversideLong-term care hospital · Perris, CA
Industry payments (Open Payments)
- 2025$629.13 · 29 payments from 8 companies
- 2024$531.47 · 25 payments from 13 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Astrazeneca Pharmaceuticals LP | $245.65 | 16 |
| Novo Nordisk Inc | $178.22 | 4 |
| Glaxosmithkline, LLC. | $70.14 | 3 |
| Amgen Inc. | $44.38 | 2 |
| Edwards Lifesciences Corporation | $25.72 | 1 |
What the 2025 payments were for
- Food and Beverage$629.13 · 29 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
Other Internal Medicine providers in Sun City
- 1346437068
- 1821097833
- 1265855829
- 1578367835
- 1437250313
- 1669428595
- 1407951890
- 1972981280
- 1194882332
- 1598860983
- 1013411602
- 1831199728