A native of New York City, Bronk was born on 13 August 1897, attended Swarthmore College, the University of Michigan, and from 1929 to 1940 was Professor for Medical Physics at the University of Pennsylvania. Later in 1940 he was appointed Professor of Physiology and Bio-physics at Cornell Medical School, NYC. Favorable investigations were undertaken of Bronk by the FBI for government-related work in both 1941 and 1947. According to FBI papers of 1961 on Bronk, “…he is a member of the President’s Science Advisory Committee and has been President of Rockefeller Institute for Medical Research, NYC, since 1953. He has served on many government committees in a consultant capacity and is recognized throughout the country
as one of the nation’s top scientists.” During his working life, Bronk also served as Chairman of the National Science Board, President of the National Academy of Sciences and National Research Council.