Joseph Masci was an American physician, educator and author based in Elmhurst, New York City. He was Professor of Medicine, Professor of Environmental Medicine and Public Health and Professor of Global Health at the Icahn School of Medicine at Mount Sinai. He served as the Director of Department of Medicine at the Elmhurst Hospital Center from 2002 through 2017, when he became Chairman of the Department of Global Health, a position he held until his death in 2022.
During his career, Masci contributed extensively to helping patients with AIDS and TB through research, books and projects. His work also focused on disaster preparedness and bioterrorism.