He was an accountant before he began producing plays on Broadway including Death of a Salesman (1949), The Diary of Anne Frank (1955), The Music Man (1957), Look Homeward, Angel (1957), and Equus (1973).
Bloomgarden produced Arthur Miller's modestly successful A View From the Bridge and The Diary of Anne Frank, both in 1955, followed by The Most Happy Fella (1956), starring Robert Weede, and The Music Man in 1957.
Ketti Frings, better known for her screenplays, wrote the play, and George Roy Hill, who had worked mostly in television, directed.
After a lengthy recuperation, Kermit triumphantly returned to producing with the off-Broadway transfer of the Circle Repertory Company production of Lanford Wilson's The Hot l Baltimore, which ran for 1,166 performances and won the New York Drama Critics Circle Award for Best American Play.
[2] Bloomgarden died at age 71 in his New York City home on September 20, 1976, having dealt with a brain tumor for six months before his death.