Thomas is a retired Air Force Officer. While in the service he was Chief of Laboratory Services, an instructor in the Air Force Physician Assistant program where he taught microbiology. He then served as Chief of Ancillary Services in charge of Laboratory, Pharmacy, and Radiology before retiring in 2000. After retirement from the Air Force he was the Assistant Director of the Texas Cord Blood Bank in San Antonio, Texas. He now teaches Immunology , Immunohematology, and Laboratory Management at Texas State University.
He received his bachelor’s degree in Medical Technology at Missouri Southern State University in 1979 and his master’s degree in microbiology and immunology in 1994 at the University of Arkansas for Medical Sciences.