Tri Minh Nguyen, M.D.
Ophthalmology (M.D.) in Fountain Valley, California, trained at University of California, Geffen School of Medicine (class of 2000). Their prescriptions cost Medicare Part D more than their services did: $1,990,503 for 4,227 claims, against $271,202 paid for services in 2024. Alcon Vision LLC was the largest of 11 companies reporting payments in 2025, $1,254 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 | 1669436002 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | No |
| NPI issued | Apr 13, 2006 |
| Last updated in NPPES | Jul 13, 2026 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Ophthalmology Primary | 207W00000X | A78829 | 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 | Tri Dang Nguyen · Surgery | 1128b4 | Nov 18, 1992 | Garden Grove, CA |
| List | Result | Details |
|---|---|---|
| HHS-OIG LEIE · Nov 10, 2026 | Possible (name) | See above |
| North Carolina Medicaid · Nov 11, 2026 | No match | — |
| New York OMIG · Nov 11, 2026 | No match | — |
| Ohio Medicaid · Nov 11, 2026 | No match | — |
| Pennsylvania Medicheck · Nov 11, 2026 | No match | — |
| Washington HCA · Nov 11, 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 | 654 |
|---|---|
| Services billed | 4,741 across 39 procedure codes |
| Paid by Medicare | $271,202 |
Part D prescriptions in 2024
| Prescriptions (claims) | 4,227 · 5,883 30-day fills |
|---|---|
| Patients | 515 |
| Total drug cost | $1,990,503 |
| Generic share | 15% of claims |
Education and affiliations
| Medical school | University of California, Geffen School of Medicine |
|---|---|
| Graduation year | 2000 |
| Medicare specialty | Ophthalmology |
Industry payments (Open Payments)
- 2025$1,254 · 46 payments from 11 companies
- 2024$596.64 · 33 payments from 7 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Alcon Vision LLC | $376.99 | 11 |
| Sun Pharmaceutical Industries Inc. | $336.98 | 13 |
| Bausch & Lomb Americas Inc. | $135.59 | 7 |
| Rayner Intraocular Lenses Limited | $92.57 | 3 |
| Harrow Eye, LLC | $84.26 | 3 |
What the 2025 payments were for
- Food and Beverage$1,254 · 46 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
Other ophthalmologists in Fountain Valley
- 1316941966
- 1326146937
- 1366500456
- 1427118348
- 1518129964
- 1689891640
- 1740492271
- 1780017897
- 1780070649
- 1801888110
- 1881221968
- 1073193611
All 21 ophthalmologists in Fountain Valley · All ophthalmologists in California