Thang D. Nguyen, MD
NPI 1831279009ActiveIndividual· Surgery· Fountain Valley, CA
Surgery (MD) in Fountain Valley, California, licensed in CA, with an NPI issued in October 2006. 350 Medicare patients in 2024, $213,163 paid; nearly all of their 296 Part D prescriptions were generic (98%). Intuitive Surgical, Inc. was the largest of 4 companies reporting payments in 2025, $1,966 in all, mostly education. Lists Ahmc Anaheim Regional Medical Center and 4 other hospitals as hospital affiliations.
Overview
| NPI | 1831279009 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | No |
| NPI issued | Oct 16, 2006 |
| Last updated in NPPES | Jul 6, 2015 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Surgery Primary | 208600000X | A76049 | CA |
| Surgery | 208600000X | 000000A76049 | CA |
Exclusion screening
| List | Result | Details |
|---|---|---|
| HHS-OIG LEIE · Nov 10, 2026 | No match | Checked by NPI and by name + state |
| 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 - General Surgery (CA) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 350 |
|---|---|
| Services billed | 816 across 111 procedure codes |
| Paid by Medicare | $213,163 |
Part D prescriptions in 2024
| Prescriptions (claims) | 296 · 311 30-day fills |
|---|---|
| Patients | 163 |
| Total drug cost | $4,533 |
| Generic share | 98% of claims |
Education and affiliations
| Graduation year | 1999 |
|---|---|
| Medicare specialty | General Surgery |
| Telehealth | Offers telehealth |
Hospital affiliations
- Ahmc Anaheim Regional Medical CenterAnaheim, CA
- Foothill Regional Medical CenterTustin, CA
- Memorialcare Orange Coast Medical CenterFountain Valley, CA
- Uci Health-OrangeOrange, CA
- West Anaheim Medical CenterAnaheim, CA
Industry payments (Open Payments)
- 2025$1,966 · 17 payments from 4 companies
- 2024$1,017 · 22 payments from 6 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Intuitive Surgical, Inc. | $1,554 | 3 |
| Integra Lifesciences Corporation | $221.34 | 5 |
| Boehringer Ingelheim Pharmaceuticals, Inc. | $170.49 | 8 |
| Abbvie Inc. | $20.08 | 1 |
What the 2025 payments were for
- Education$1,500 · 1 payment
- Food and Beverage$466.39 · 16 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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All 24 general surgeons in Fountain Valley · All general surgeons in California