Dr. Marquez has over eighteen years' experience in the medical field. He graduated from medical school in 1993 and completed his residency at St. Mary's Health Center in St. Louis, MO. He is certified in advanced cardiac life support, basic cardiac life support, and advanced trauma life support. He is a member of the critical care air transport team and flight surgeon for the United States Air Force Reserve.Dr. Marquez joined Internal Medicine Group in 2005 and currently serves as a hospitalist for SkyRidge Medical Center, specializing in internal medicine. Dr. Marquez joined Ooltewah Medical Services in March 2015.