He has been practicing medicine for over 35 years. Currently, Dr. Ramakrishnan S is working with Apollo Hospital. In addition to his affiliation with multiple hospitals, he has been professionally active in many other ways. He has been an active member of Tamilnadu Medical Council, Association of Physicians of India (API). Dr. Ramakrishnan S has been feted with the MBBS Gold Medal in Physics, MBBS Gold Medal in Biochemistry. He earned his MBBS from Madras University, Chenai, India. He also has a MD - General Medicine from Madras University, Chenai, India and MD from .