Medical Officer, Global Program on Acquired Immune Deficiency Syndrome, World Health Organization since 1991. Medical Officer, Global Programme on Acquired Immune Deficiency Syndrome, World Health Organization, Geneva, 1987-1991. Professor & Project(s) Coord, Community Medical, Institute of Medical, Nepal, 1980-1987.
Project(s) Chief, Smallpox Eradication Project(s), 1969-1979, Assistant Director, Community Health, 1966-1969, Medical Officer, various posts, 1963-1966, Ministry of Health, Nepal. House Officer, Surgery & Medical, Irwin Hospital, India, 1962.