Dr.Das is presently working as the Chief Cardiac Surgeon (CTVS). He has about 30 years of experience in this field of specialty. Prior to this, he was working as a Senior Consultant, Department of Cardio-Thoracic Vascular Surgery (CTVS), All India Institute of Medical Sciences, New Delhi from 1984 to 1996. His expertise includes CABG on beating heart, Aortic Aneurysm Surgery, Double Valve Replacement/ Mitral Valve Replacement /Aortic Valve Replacement, All types of Congenital anomalies & Intra Cardiac Repair. Till now performed more than 20,000 heart surgery and at present doing around 800 cases every year.