Quick answers
- Does Nghia D. Nguyen accept Medicare assignment?
- Yes. Medicare's clinician data says Nghia D. Nguyen accepts Medicare assignment (the Medicare-approved amount as full payment for covered services), as of October 2, 2026. Ask the office to confirm before your visit.
- What is Nghia D. Nguyen's NPI number?
- 1538725890. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Nghia D. Nguyen works
Medicare's Facility Affiliation Data lists Nghia D. Nguyen at these hospitals (updated October 2, 2026). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians. Star rating and emergency services: Hospital General Information (CMS), data updated October 26, 2026.
- Memorial Hermann - Texas Medical CenterHouston, TX · Acute Care Hospital · Medicare rating: 4 of 5 stars · CCN 450068
- Memorial Hermann Katy HospitalKaty, TX · Acute Care Hospital · Medicare rating: 3 of 5 stars · CCN 450847
- Rio Grande Regional HospitalMcAllen, TX · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 450711
- Valley Regional Medical CenterBrownsville, TX · Acute Care Hospital · Medicare rating: 2 of 5 stars · Emergency services: listed by Medicare · CCN 450662
- VHS Harlingen Hospital Company LLCHarlingen, TX · Acute Care Hospital · Medicare rating: 2 of 5 stars · Emergency services: listed by Medicare · CCN 450033
Practice locations
Addresses where Nghia D. Nguyen is enrolled with Medicare (CMS data updated October 2, 2026).
- 4211 N Jackson RdMcAllen, TX 78504 (956) 365‑4400
- 512 Victoria Ln, Suite 2Harlingen, TX 78550 (956) 365‑4400
Group practices
Medicare enrollment lists Nghia D. Nguyen as a member of this group (CMS data updated October 2, 2026).
- Gastroenterology Consultants of South Texas, PLLC42 clinicians in the group
Specialties
- Gastroenterologyprimary
Other gastroenterologists in McAllen
Clinicians with the same Medicare primary specialty in McAllen, TX — not a recommendation.
Other clinicians in Gastroenterology Consultants of South Texas, PLLC
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | DO |
|---|---|
| Medical school | University Of North Texas Hsc, College Of Osteopathic Med |
| Graduation year | 2019 (7 years since medical school) |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1538725890 |
| Corrections | Report an error or suggest an update → |
Most corrections must be made at the source: clinicians update their NPI Registry record (NPPES) and their Medicare enrollment (PECOS); this page follows the next data release.
Sources
- Facility Affiliation Data — Centers for Medicare & Medicaid Services (CMS), data updated October 2, 2026, retrieved October 29, 2026
- Hospital General Information — CMS, data updated October 26, 2026, retrieved November 13, 2026
- National Downloadable File (Doctors and Clinicians) — CMS, data updated October 2, 2026, retrieved October 29, 2026
- NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
- Medicare Care Compare — official Medicare tool to look up clinicians