Dr Naresh Trehan, Chairman of Medanta Hospital, highlighted the importance of a balanced lifestyle for longevity, advocating moderation in diet and regular exercise for heart health. Dr. Naresh Trehan, a graduate from King George Medical College, is a renowned Cardiovascular and Cardiothoracic surgeon, trained and practiced at New York Unive more.. Top cardiologist Dr. Naresh Trehan, Chairman of Medanta Hospital, has called Delhi's air pollution a "public health emergency," warning that hospital visits for respiratory illnesses have tripled ... The Chairman and Managing Director of Medanta The Medicity, Dr. Naresh Trehan is a world-renowned cardiovascular and cardiothoracic surgeon. He has been awarded the highly prestigious Padma Bhushan and the Padma Shri by the Government of India. Dr.