Tuan Dang Nguyen, DO
NPI 1164959185ActiveIndividual· Internal Medicine, Nephrology· Westminster, CA
Internal Medicine, Nephrology (DO) in Westminster, California, trained at New York College of Osteo Medicine of New York Institute of Technology (class of 2017). Their prescriptions cost Medicare Part D more than their services did: $37,394 for 440 claims, against $13,618 paid for services in 2024. Travere Therapeutics, Inc. was the largest of 13 companies reporting payments in 2025, $1,078 in all, mostly food and beverage.
Overview
| NPI | 1164959185 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | DO |
| Sole proprietor | No |
| NPI issued | May 22, 2017 |
| Last updated in NPPES | Jul 13, 2026 |
| Certified by provider | Jul 13, 2026 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Nephrology Primary | 207RN0300X | 20A18461 | CA |
| Internal Medicine | 207R00000X | S4200 | TX |
| General Practice | 208D00000X | S4200 | TX |
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 - Internal Medicine (CA) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 79 |
|---|---|
| Services billed | 132 across 6 procedure codes |
| Paid by Medicare | $13,618 |
Part D prescriptions in 2024
| Prescriptions (claims) | 440 · 774 30-day fills |
|---|---|
| Patients | 122 |
| Total drug cost | $37,394 |
| Generic share | 94% of claims |
Education and affiliations
| Medical school | New York College of Osteo Medicine of New York Institute of Technology |
|---|---|
| Graduation year | 2017 |
| Medicare specialty | Internal Medicine |
| Secondary specialties | Nephrology |
Medical groups
- Kevin Pham MD IncOrange, CA · 5 clinicians
- Wynn Medical CenterRosemead, CA · 3 clinicians
Hospital affiliations
- Memorialcare Long Beach Medical CenterLong Beach, CA
- Memorialcare Orange Coast Medical CenterFountain Valley, CA
- Memorialcare Saddleback Medical CenterLaguna Hills, CA
- Providence St. Joseph HospitalOrange, CA
- Uci Health-OrangeOrange, CA
Other facilities
- Carewell Home Health, IncHome health agency · Orange, CA
Industry payments (Open Payments)
- 2025$1,078 · 22 payments from 13 companies
- 2024$59.56 · 2 payments from 2 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Travere Therapeutics, Inc. | $168.00 | 2 |
| Boehringer Ingelheim Pharmaceuticals, Inc. | $163.44 | 3 |
| Calliditas Therapeutics US Inc. | $162.90 | 2 |
| Amgen Inc. | $160.43 | 2 |
| Astrazeneca Pharmaceuticals LP | $142.98 | 2 |
What the 2025 payments were for
- Food and Beverage$1,078 · 22 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
Other nephrologists in Westminster
- 1891667721