1970 - 1973 Doctor at Rajaji Government Hospital, Madurai
1974 - 1976 ICU Incharge at Royapettah Government Hospital
1985 - 1994 Professor of Medicine at Kilpauk Medical College
2001 - 2003 Senior Consultant at Fortis Malar Hospital
2009 - 2012 Professor of Medicine at Chettinad Hospital and Research Institute
2015 - 2020 Senior Consultant and Medical Director at Chennai Meenakshi Medical Hospital