 He interned at Boston City Hospital under such medical luminaries as George Minot (1934 Nobel laureate), Edwin Locke, Soma Weiss, William Bosworth Castle and Maxwell Finland.Hurwitz joined the teaching staff of Harvard Medical School in 1931 as a research fellow in obstetrics and was appointed clinical professor of medicine in 1967.Hurwitz served as Mount Auburn Hospital's first director of medical education, establishing ties with Harvard Medical School and solidifying Mount Auburn's status as a teaching hospital during his tenure as Chief of Medicine from 1951-1970.