The University of Texas Health Science Center at San Antonio (UT Health San Antonio) is a public academic health science center in San Antonio, Texas. It is part of the University of Texas System. UT Health San Antonio is the largest health sciences university in South Texas. It is located in the South Texas Medical Center and serves San Antonio and all of the 50,000 square miles (130,000 km2) area of Central and South Texas. It extends to campuses in the Texas border communities of Laredo and the Lower Rio Grande Valley.