He was one of the co-founders of Delhi Medical Council, working as its founder president and served PGIMER as the chairman of its selection committee, while retaining his position as a WHO consultant.

[6] During this period, Chaudhury chaired the Board of Trustees of the International Clinical Epidemiological Network (INCLEN) for two terms till 2006 and held its membership.

[9] He became a non-executive independent director of the Indraprastha Medical Corporation in 2008 but relinquished the post in 2014 when he was appointed as the Advisor to the Ministry of Health and Family Welfare.

[15] Besides 275 articles[16] in national and international journals, he has written 25 textbooks of medical education[6] and a book on Ayurveda, titled The Healing Powers of Herbs.

[17] Chaudhury died on 27 October 2015, eight days before his 85th birthday, during a visit to Chennai, Tamil Nadu, where he was attending a conference on Pharmacovigilance.

[6] He was the Patron of the India chapter of the International Society For Pharmacoeconomics and Outcomes Research (ISPOR)[21] and an Emeritus Professor and an elected Fellow of the National Academy of Medical Sciences.