Head ear, nose and throat Kasturba Medical College, Manipal, India, 1976—1979. Assistant professor ear, nose and throat Jawaharlal Institute of Postgraduate Medical Education & Research, Pondicherry, India, 1979—1981. From. assistant professor to professor All India Institute Medical Sciences, New Delhi, since 1981, head ear, nose and throat, since 1995, chief rehabilitation unit audiology and speech pathology, 1995—2003.
President Neurotological Society India, 1993—1994, All India Rhinology Society, 2001—2002, Association Otolaryngologists of India, 2002—2003. Chairman otorhinolaryngological research society All India Institute Medical Sciences, since 1995. Speaker in field.
Member of Indian Academy Otolaryngology-Head and Neck Surgery (chairman since 2002).