John Rheiner, M.D. is a native of San Antonio, born at the Nix Hospital. He attended Churchill High School, and then Texas A&M University in College Station, Texas, where he received a Bachelor of Science degree in Biology. Immediately following his graduation from A&M, he was accepted into medical school at the University of Texas Health Science Center in San Antonio, and received his M.D. degree in 1985. Dr. Rheiner then completed three years of General Surgery residency training at the L.S.U. Medical School Residency Program in Shreveport, Louisiana. He returned to San Antonio in 1988 and worked in Urgent Care Medicine with Texas Med Clinic in San Antonio for 20 years, until 2008. In April of 2008, Dr. Rheiner joined the Boerne Urgent Care Clinic, electing to practice close to his home in Fair Oaks Ranch.