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

Dr. Mark Thomas Muir, MD

Individual provider Surgery Physician · NPI 1134332422

Dr. Mark Thomas Muir, MD is a General Surgery in San Antonio, Texas. Graduated from University of Texas Southwestern Medical School at Dallas in 2006, 20 years ago. Practices with University of Texas Health Science Center at San Antonio, a 1,295-clinician group and accepts Medicare assignment. Licensed in Texas.

Years since qualifying
20
Trained at
University of Texas Southwestern Medical School at Dallas
Licensed in
TX
In the registry since
2007
Specialties on file
2
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

4502 Medical Dr
San Antonio, TX 78229-4402
Phone: (210) 358-4000
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Surgical Critical Care Physician (primary) Taxonomy 2086S0102X · Licence N2675 (TX)
Surgery Physician Taxonomy 208600000X · Licence N2675 (TX)

Record details

NPI number1134332422
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedMay 7, 2007
Last updated in NPPESNovember 17, 2023
Certification dateNovember 17, 2023

Medicare enrollment

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

Medicare specialtyGENERAL SURGERY
Also practisesCRITICAL CARE (INTENSIVISTS)
Medical schoolUNIVERSITY OF TEXAS SOUTHWESTERN MEDICAL SCHOOL AT DALLAS
Graduated 2006 (20 years in practice)
Group practice University Of Texas Health Science Center At San Antonio — 1295 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

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