Dr. Lewis graduated from the U.S. Military Academy, West Point, NY, and the U.S. Army Military Intelligence Officer Basic Course, U.S. Army Airborne School, and U.S. Army Ranger School before serving as an intelligence officer in Infantry Divisions on the Demilitarized Zone in Korea and Fort Ord, California, for five years prior to attending medical school at Tulane University in New Orleans.

Following internship at Walter Reed Army Medical Center, Dr. Lewis served as Chief of the Primary Care and Flight Medicine Clinics at The Pentagon where he routinely cared for the highest levels of civilian and military leadership in the DoD, U.S. Congress, the CIA, and U.S. Supreme Court and was rated as a Senior Flight Surgeon.

Following his residency training in Preventive Medicine and Public Health at Johns Hopkins University and the Walter Reed Army Institute of Research, Dr. Lewis began a long period of international research and as a professor at the Uniformed Services University medical school. Altogether, Dr. Lewis retired at the military rank of Colonel at the end of a distinguished 31 1/2 year career in the Army.