His areas of expertise include esophageal cancer, lung transplant, and emphysema. Dr. Vigneswaran takes Humana HMO, Humana Bronze, and Humana Catastrophic, as well as other insurance carriers. Before completing his residency at Royal Victoria Infirmary and Royal Infirmary of Edinburgh, Dr. Vigneswaran attended medical school at the University of Peradeniya Faculty of Medicine. Dr. Vigneswaran has received the following distinction: Chicago Super Doctors. He speaks Tamil. He is affiliated with Loyola University Medical Center (LUMC), Cardinal Bernardin Cancer Center, and Loyola Medicine Center for Heart & Vascular Medicine.