Faculty(Lecturer) Department of Neurological Sciences, Christian Medical College & Hospital, Vellore, India, from April 1989 to April 1991
Consultant Neurosurgeon, Tamilnadu Hospitals, Chennai, India, from May 1991 to August 1996
Senior Consultant Neurosurgeon, Apollo Specialty Hospital, Chennai, India, from September 1996 to August 2012
Chief Executive Officer & Director of Neurosciences, SRM Institutes of Medical Sciences, Vadapalani, Chennai, India, from September 2012 to October 2013
Director and Head of Department of Neurosciences, Apollo Speciality Hospital, Vanagaram and OMR, Chennai from March 2014 to till date