Came to the United States, 1910, naturalized, 1916. Assistant professor architecture New York University, 1932-1940. Chief architect Department Public Works, New York City, 1940-1945.
Professor medical architecture Columbia, practice archaeology, New York City, 1945-1970. Senior partner firm Isadore and Zachary Rosenfield (firm now Zachary Rosenfield & Partners), retired. Design, color consultant University of Minnesota, Institute of Design, Chicago.
Lecturer medical architectural planning professional orgns. universities in the United States. Designer P.R. Medical Center, San Juan, Khyber Medical Center, Peshawar, Pakistan.
Served with 472d Engineers, United States Army, World War I. (Fellow) The American Institute of Architects (lecturer medical architectural planning New York chapter 1944, 1st Chairman of Commission hospital research. Member American Association for Hospital Planning (director, honor award for distinguished contribution to hospital planning and health of America people 1975), American Hospital Association.