Dr. Petros Leinonen is a board-certified cardiothoracic surgeon with East Tennessee Cardiovascular Surgery Group in Knoxville, TN. Before joining ETCVSG, Dr. Leinonen served as a Colonel in the US Army after almost 24 years of service. He deployed as a cardiothoracic surgeon to the Middle East and took care of injured US servicemen. He was stationed primarily in San Antonio where he worked at Brooke Army Medical Center and Audie L. Murphy Memorial Veterans' Hospital. When he’s not performing surgery, Dr. Leinonen enjoys traveling and exercising.