2 yrs fellowship in Head and Neck Oncosurgery at Tata Memorial Hospital, Mumbai
Fellowship at Memorial Sloan-Kettering Cancer Centre, New York, USA
Fellowship in CO2 Laser surgery at University of Gottingen, Germany
Fellowship in Phoniatrics at University of Freiburg, Germany UICC
Fellowship in Skullbase Surgery at University Hospital of Pittsburg, USA UICC
Fellowship in Head & Neck Surgery at Netherland Cancer Institute, Amsterdam
Life member of Association of Otolaryngologists of India
Founder member of Foundation for Head and Neck Oncology
Life member of Association of Phonosurgeons of India
President, Laryngology and Voice Association
30 yrs experience in Armed Forces of India
Associate Professor at Armed Forces Medical College
Professor at Army College of Medical Sciences, Delhi
Professor and Head at Army Hospital (Research and Referral), Delhi