Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.
NPIDirectory

Dr. Sun B Nguyen, MD

Individual provider Emergency Medicine Physician · NPI 1538492970

Dr. Sun B Nguyen, MD is an Internal Medicine in Houston, Texas. Graduated from University of Texas Medical School at Houston in 2011, 15 years ago. Practices with Rayford ER Group PLLC, a 10-clinician group and accepts Medicare assignment. Licensed in Texas.

Years since qualifying
15
Trained at
University of Texas Medical School at Houston
Licensed in
TX
In the registry since
2009
Specialties on file
3
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

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Practice location Address checks out

1515 Holcombe Blvd
Houston, TX 77030-4009
Phone: (713) 792-6161
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Internal Medicine Physician (primary) Taxonomy 207R00000X · Licence N3210 (TX)
Emergency Medicine Physician Taxonomy 207P00000X · Licence N3210 (TX)
Pediatrics Physician Taxonomy 208000000X · Licence N3210 (TX)

Record details

NPI number1538492970
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedSeptember 17, 2009
Last updated in NPPESJanuary 14, 2016

Medicare enrollment

From the CMS Doctors & Clinicians file — this clinician is enrolled in Medicare.

Medicare specialtyINTERNAL MEDICINE
Medical schoolUNIVERSITY OF TEXAS MEDICAL SCHOOL AT HOUSTON
Graduated 2011 (15 years in practice)
Group practice Rayford Er Group Pllc — 10 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
Practice locations2 on file with Medicare

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