Dr. M. Khalilullah, the recipient of Padma Shree, Padma Bhushan and Dr. B.C.Roy National Award conferred on him for the recognition of his services in Cardiology to the nation, has been the first to start Electrophysiological Studies and Catheter ablation of Cardiac arrhythmias way back from 1975 onwards. He has been responsible for establishing several new techniques in the diagnosis and management of Cardio Vascular disorders. The introduction of balloon valvuloplasty in 1985 ushered in a new era of interventional cardiology with a series of several firsts to his credit, and he has been totally engaged in the practice of therapeutic Cardiology. More than 60% of patients are being treated today with non-surgical techniques including the Closure of ASDS, VSDS and PDAS.