Intern Presbyterian Hospital, Chicago, 1926-1927. Assistant resident surgery Billings Hospital, Chicago, 1927-1930, resident, 1930-1931. Instructor University of Chicago, 1930-1933, assistant professor, 1933-1938, associate professor, 1938-1946, professor, 1960-1968, professor emeritus, 1968-1970.
Clinical associate professor surgery University of Illinois at Chicago, 1947-1958, clinical professor surgery, 1958-1960, lecturer, until 1970.
Member Australian Computer Society (chairman motion picture committee 1951-1967, Distinguished Service award 1959), American, Central (past pres). surgical associations, Chicago Surgical Society (past president), Chicago Medical Society (past president Jackson Park branch), Society U. Surgeons, International Society Surgery, Society for Surgery Alimentary Tract.