Minh Thu Thi Nguyen, MD
NPI 1629633474ActiveIndividual· Internal Medicine, Gastroenterology· San Marcos, TX
Internal Medicine, Gastroenterology (MD) in San Marcos, Texas, trained at University of Texas Medical Branch at Galveston (class of 2019). Their prescriptions cost Medicare Part D more than their services did: $48,457 for 49 claims, against $5,845 paid for services in 2024. Abbvie Inc. was the largest of 19 companies reporting payments in 2025, $1,618 in all, mostly food and beverage.
Overview
| NPI | 1629633474 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | No |
| NPI issued | May 7, 2019 |
| Last updated in NPPES | Jul 18, 2025 |
| Certified by provider | Jul 18, 2025 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Gastroenterology Primary | 207RG0100X | V5315 | TX |
| Student in an Organized Health Care Education/Training Program | 390200000X | — | CT |
Exclusion screening
| List | Result | Details |
|---|---|---|
| HHS-OIG LEIE · Oct 9, 2026 | No match | Checked by NPI and by name + state |
| 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 - Gastroenterology (TX) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 51 |
|---|---|
| Services billed | 89 across 4 procedure codes |
| Paid by Medicare | $5,845 |
Part D prescriptions in 2024
| Prescriptions (claims) | 49 · 73 30-day fills |
|---|---|
| Patients | 30 |
| Total drug cost | $48,457 |
| Generic share | 67% of claims |
Education and affiliations
| Medical school | University of Texas Medical Branch at Galveston |
|---|---|
| Graduation year | 2019 |
| Medicare specialty | Gastroenterology |
Medical group
- Texas Digestive Disease Consultants, PLLCFlower Mound, TX · 608 clinicians
Hospital affiliations
- Christus Santa Rosa Hospital-San MarcosSan Marcos, TX
- Resolute Health HospitalNew Braunfels, TX
Industry payments (Open Payments)
- 2025$1,618 · 54 payments from 19 companies
- 2024$2,421 · 45 payments from 13 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Abbvie Inc. | $531.58 | 19 |
| Janssen Biotech, Inc. | $203.76 | 4 |
| Qol Medical, LLC | $139.74 | 5 |
| Lilly USA, LLC | $114.30 | 1 |
| Mallinckrodt Hospital Products Inc. | $114.01 | 1 |
What the 2025 payments were for
- Food and Beverage$1,618 · 54 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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All Internal Medicine, Gastroenterology providers in Texas →