Dr. James P. Kelly of Peoria, Illinois, began his career at Northwestern Medical School in Chicago. He was chief resident in cardiothoracic surgery at the Barnes Hospital/Washington University School of Medicine in St. Louis, Missouri. Dr. Kelly began his practice in cardiothoracic surgery at Memorial Hospital of South Bend in 1986.

Dr. Thomas Hughes, a graduate of St Louis University School of Medicine, joined the Cardiothoracic Surgery Group in South Bend in 1989.

Dr. Walter Halloran of Minneapolis, Minnesota, graduated from the University of Minnesota Medical School. He performed general surgery, cardiac and thoracic surgery at the University of Rochester, Strong Memorial Hospital, in Rochester, New York. He joined the Cardiothoracic Surgery Group of South Bend in 1991.

Dr. Charles J. Lamb graduated from Jefferson Medical College, Philadelphia, Pennsylvania, in June 1980. He completed his general surgery rotation at Thomas Jefferson University Hospital in Philadelphia. His thoracic surgery training took place at The University Hospitals of Cleveland. Dr Lamb joined the Cardiothoracic Surgery Group of South Bend in 1990.