Global Advisor, Centre for Urban Health and Development within the Asian Institute of Poverty Alleviation (CUHD-AIPA)
Former Chief of the Epidemiology Research Branch; and Program Director for the social epidemiology program, National Institute on Drug Abuse, National Institutes of Health, USA
Founding Board member, International Society for Urban Health
Former Science Advisor for Urban Health, New York Academy of Medicine
Founding Board Member and Vice President, Interdisciplinary Association for Population Health Science
Former Member, Steering Committee of the National Hispanic Science Network on Drug Abuse