MEMBER OF PROFESSIONAL BODIES OF APS CHAIRMAN
- Fellow of the Royal society of Medicine, London, U.K.
- Fellow of the Royal society of Health, London, U.K.
- Fellow of the Royal society of Tropical Medicine and Hygiene, London, U.K.
- Member of the American Medical Society, Vienna, Austria.
- Member of International Association of Physicians in AIDS Care
( IAPAC ),Chicago,USA
- Member AIDS Society of India
- Member , Federation of NGOs of North East India
- Member , International AIDS Society ( IAS)
- Member , Asian Harm Reduction Network ( AHRN)
- President,North East India Harm reduction Network ( NEIHRN)