MD FRCP FICP  , Former Prof of Medicine PGIMER and Dr RML Hospital, New Delhi
Member Faculty Council, Indian College of Physicians; Past Vice President API National governing body 
Supervised the roll out and scale up of ART programme in India to over 10 lakh patients as National Programme officer at NACO
Fogarty fellowship on HIV at Johns Hopkins University at Baltimore, USA.
Member of WHO ART guidelines committee-2010 & 2013
Member of HIV TB Core group at STOP Department at WHO HQ, Geneva
Over 80 publications, Coeditor of book“HIV /AIDS –Clinicians Perspective”.
Past Chairman , API Delhi Chapter
Past President Indian Association of Clinical Medicine