David Rosenthal, Ph.D., is the Faculty Director of the Full Time and Executive Management Programs in the Department of Health Policy and Management in the Mailman School of Public Health as well as an Associate Professor in Family and Community Medicine, Columbia University Medical Center. Previously, he was the Executive Director of the Lower East Side Harm Reduction Center. He is a Family Therapist who also has done research on a wide variety of issues including drug use, family issues and public health. He has also served on a number of community boards, including Clowns Without Borders and Iowa City Hospice.