Thao P. Nguyen, M D
Ophthalmology (M D) in San Diego, California, trained at University of Oklahoma College of Medicine (class of 1991). Their prescriptions cost Medicare Part D more than their services did: $246,072 for 1,212 claims, against $66,764 paid for services in 2024. Heidelberg Engineering, Inc. was the largest of 2 companies reporting payments in 2025, $111.62 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 | 1154352185 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M D |
| Sole proprietor | No |
| NPI issued | Jul 6, 2006 |
| Last updated in NPPES | May 10, 2024 |
| Certified by provider | May 10, 2024 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Ophthalmology Primary | 207W00000X | G81689 | CA |
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 | Thao T P Nguyen · Pharmacist | 1128a1 | May 8, 1985 | Pomona, CA |
| List | Result | Details |
|---|---|---|
| HHS-OIG LEIE · Oct 9, 2026 | Possible (name) | See above |
| North Carolina Medicaid · Nov 10, 2026 | No match | — |
| New York OMIG · Nov 10, 2026 | No match | — |
| Ohio Medicaid · Nov 10, 2026 | No match | — |
| Pennsylvania Medicheck · Nov 10, 2026 | No match | — |
| Washington HCA · Nov 10, 2026 | No match | — |
Official OIG search · How matching works ·Bulk check a roster
Medicare
| Enrollment (PECOS) | Enrolled Practitioner - Ophthalmology (CA) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 273 |
|---|---|
| Services billed | 774 across 22 procedure codes |
| Paid by Medicare | $66,764 |
Part D prescriptions in 2024
| Prescriptions (claims) | 1,212 · 1,617 30-day fills |
|---|---|
| Patients | 206 |
| Total drug cost | $246,072 |
| Generic share | 39% of claims |
Education and affiliations
| Medical school | University of Oklahoma College of Medicine |
|---|---|
| Graduation year | 1991 |
| Medicare specialty | Ophthalmology |
Medical group
- Regents of the University of CaliforniaSan Diego, CA · 2,089 clinicians
Hospital affiliation
- Uc San Diego Health Hillcrest - Hillcrest Med CtrSan Diego, CA
Industry payments (Open Payments)
- 2025$111.62 · 2 payments from 2 companies
- 2024$18.26 · 1 payment from 1 company
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Heidelberg Engineering, Inc. | $88.00 | 1 |
| Amgen Inc. | $23.62 | 1 |
What the 2025 payments were for
- Food and Beverage$111.62 · 2 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
Other Ophthalmology providers in San Diego
- 1477610558
- 1902880867
- 1225419583
- 1326138710
- 1427301894
- 1821341504
- 1013074590
- 1992823959
- 1164529160
- 1912043605
- 1194755884
- 1821312190