Residency in Cardio Vascular & Thoracic Surgery-G.M. Associated Hospital, Lucknow, A.M.O. Cardiac Surgery, Railway Hospital Perambur 1981-1982., K.G. Medical College, Lucknow-1982-84 as Lecturer, Cardiothoracic & Vascular Surgery., Consultant-Cardiothoracic & Vascular Surgeon, Apollo Hospitals, Madras-1984-1991.