Overdose Deaths Go Down Citywide—But Rise Sharply in East Harlem WNYC - September 10, 2019 Chinazo Cunningham, M.D., M.S., and Shadi Nahvi, M.D., M.S., discuss barriers to addiction treatment and the social and economic reasons contributing to increased overdose deaths in some lower-income areas of New York City. Dr. Cunningham is associate chief of the division of general internal medicine at Einstein and Montefiore; Dr. Nahvi is associate professor of medicine and of psychiatry and behavioral sciences at Einstein.