Lan Tuyet Nguyen, M.D.
Specialist (M.D.) in San Jose, California, trained at University of Pittsburgh School of Medicine (class of 1994). Their prescriptions cost Medicare Part D more than their services did: $610,129 for 9,931 claims, against $378,660 paid for services in 2024. Alcon Vision LLC was the largest of 5 companies reporting payments in 2025, $315.76 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 | 1174516264 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | Yes |
| NPI issued | Aug 24, 2005 |
| Last updated in NPPES | Jul 26, 2018 |
| Reactivated | Apr 3, 2006 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Specialist Primary | 174400000X | A716250 | 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 | Lan Phuong Nguyen · No Known Affiliation | 1128a1 | Apr 4, 1988 | Westminister, 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 | 1,105 |
|---|---|
| Services billed | 4,657 across 31 procedure codes |
| Paid by Medicare | $378,660 |
Part D prescriptions in 2024
| Prescriptions (claims) | 9,931 · 13,101 30-day fills |
|---|---|
| Patients | 1,994 |
| Total drug cost | $610,129 |
| Generic share | 73% of claims |
Education and affiliations
| Medical school | University of Pittsburgh School of Medicine |
|---|---|
| Graduation year | 1994 |
| Medicare specialty | Ophthalmology |
Hospital affiliation
- Santa Clara Valley Medical CenterSan Jose, CA
Industry payments (Open Payments)
- 2025$315.76 · 13 payments from 5 companies
- 2024$414.40 · 10 payments from 7 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Alcon Vision LLC | $171.44 | 6 |
| Abbvie Inc. | $57.62 | 2 |
| Sun Pharmaceutical Industries Inc. | $50.41 | 3 |
| Thea Pharma Inc. | $21.46 | 1 |
| Glaukos Corporation | $14.83 | 1 |
What the 2025 payments were for
- Food and Beverage$315.76 · 13 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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All 190 Specialist providers in San Jose · All Specialist providers in California