Mark L. Smith is an American physician and plastic surgeon based in New York City. He is Chief of Plastic Surgery at Mount Sinai Beth Israel Beth Israel Medical Center, Director of Plastic Surgery for Continuum Cancer Centers of New York, Director, The Friedman Center for Lymphedema Research and Treatment, CoDirector of The Lipedema Project, and Professor of Surgery at Icahn School of Medicine at Mount Sinai. His areas of focus include microsurgical breast reconstruction, head and neck reconstruction, facial paralysis, reconstruction of congenital defects and the surgical treatment of lymphedema and lipedema.