Director - Department of Radiation Oncology (Head Neck & Breast)– Apollo Proton Cancer Centre, Chennai

Unit head Radiation Oncology Department at Apollo Cancer Centre, New Delhi.

Faculty medical education programs on precision radiation techniques

Advisor to Global Cancer Concern India, NGO

Observer Montefiore Einstein Centre for Cancer Care, New York, Memorial Sloan Kettering Cancer Centre, New York, Moores Cancer Centre, San Diego, and recently, at Miami Cancer Institute, Miami.

Army Medical Corps - Indian Army