Dr. Mark Muir, M.D.

With 19 years of practice, Dr. Mark Muir is an established general surgery provider, M.D., after earning their medical degree at University Of Texas Southwestern Medical School At Dallas in 2006. Dr. currently practices across 7 facilities, including University Health System in San Antonio, Texas. Their National Provider Identifier (NPI) is 1134332422, and the profile below combines data from CMS NPPES, Medicare billing records, the HHS OIG exclusion list, and — where available — CMS Open Payments, Medicare Utilization, and Part D prescriber summaries.

Dr. Mark Muir's practice is located in ZIP 78229 (San Antonio, Texas), which has an overall CartoChrome Healthcare Access Score of 63/100 (Moderate Access). Access to care in this area is moderate — most services are reachable but with meaningful variability by specialty.

CMS Medicare data shows Dr. Mark Muir as a lower-volume general surgery provider, treating approximately 105 Medicare beneficiaries and delivering 195 services in the most recent reporting year. That panel size indicates a smaller, more selective practice pattern.