Dr. Byrne received his Bachelor of Science in Education from Baylor University in 2006. Prior to attending medical school, he received a M.P.H. from the University of Texas School of Public Health in 2009. He then completed medical school at the Joe R. & Teresa Lozano Long School of Medicine at University of Texas Health Science Center in San Antonio in 2013. He completed his residency in Obstetrics and Gynecology at the University of Chicago Medical Center in Chicago, IL, before coming back to Texas to complete a fellowship in Maternal-Fetal Medicine at the University of Texas Southwestern Medical Center/Parkland Hospital in 2020. Dr. Byrne joined the faculty at the University of Texas Health Science Center at San Antonio as an Assistant Professor in the Division of Maternal-Fetal Medicine. He serves as the Program Director for the Obstetrics and Gynecology residency.