Dr Sivakumar is a renowned physician who has more than 45 years of experience treating patients from across the globe. He has been Honorary Physician at Govt. Rajiv Gandhi Memorial Hospital (formerly called Government General Hospital) and Madras Medical College in the Departments of Medicine & Cardiology, for over 20 years teaching and training undergraduate and postgraduate students. He also served as Honorary Consultant at Lady Wellington Hospital, Apollo hospital, Chennai.Dr Sivakumar is consultant to several esteemed and well known corporate organizations such as British Airways, Lufthansa, Hindustan Unilever, Standard Chartered Bank, International SOS etc.