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

Dr. Thien An Nguyen, MD

Individual provider Internal Medicine Physician · NPI 1477872505

Dr. Thien An Nguyen, MD is an Internal Medicine in Katy, Texas. Qualified in 2010, 16 years ago. Practices with Katy Critical Care Consultants PLLC, a 5-clinician group, works from 3 locations and accepts Medicare assignment. Licensed in Texas.

Years since qualifying
16
Licensed in
TX
In the registry since
2010
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 PO Box

The provider listed a PO Box rather than a street location, so this is not a walk-in address.

PO Box 475
Katy, TX 77492-0475
Phone: (281) 703-3020
Fax: (281) 578-4862
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Additional practice locations (2)

  • 600 Elizabeth St, Corpus Christi, TX 78404-2235 — (361) 881-3000
  • 1401 St Joseph Pkwy, Houston, TX 77002-8301 — (850) 607-3641

Specialties & licences

Critical Care Medicine (Internal Medicine) Physician (primary) Taxonomy 207RC0200X · Licence Q9696 (TX)
Internal Medicine Physician Taxonomy 207R00000X · Licence Q9696 (TX)
Pulmonary Disease Physician Taxonomy 207RP1001X · Licence Q9696 (TX)

Record details

NPI number1477872505
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorYes
NPI enumeratedMay 28, 2010
Last updated in NPPESAugust 12, 2024
Certification dateAugust 12, 2024

Medicare enrollment

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

Medicare specialtyINTERNAL MEDICINE
Also practisesPULMONARY DISEASE
Medical schoolOTHER
Graduated 2010 (16 years in practice)
Group practice Katy Critical Care Consultants Pllc — 5 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
Practice locations2 on file with Medicare

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