 Natarajan, considered by many as the physician who popularized geriatric medicine in India, is reported to be the first Indian to obtain a specialization in the medical branch of geriatric medicine and is the first Professor of the discipline in the country.During his tenure at the Government Hospital, Chennai, he was successful in establishing an out patient centre dedicated to geriatric healthcare.He is also credited with launching a post graduate course (MD) in geriatric medicine during his service as the Professor at the Madras Medical College, Chennai.