Has more than 3 decades of experience as a Medical Physicist, and has vast experience in Treatment Planning, Delivery and Quality Assurance of the machines and the treatments delivered. He was instrumental in commissioning the first 3DCRT and demonstrated the first IMRT in the country. We commissioned the first MV based IGRT of the country in Ruby Hall Clinic and been a promoter of MVCBCT. He has been a keen teacher of Radiation Medical Physics throughout. Has a huge experience in accelerator based stereotactic treatments. Introduced the frameless Stereotactic Radiosurgery in RHC, in 2015 using Siemens Oncor Impression Plus. Functioned as a member in the committees formed by AERB on various aspects of safe use of Linear Accelerators and treatment planning. Funtioned as a chairman of College of Medical Physic of India. He has more than 100 publications and presentations as a group author. More than 25 invited talk inside and outside the country. Holds a joint patent in US, Europe and China on Mixed Energy beam IMRT.