John Moscowitz was ordained a rabbi in 1982 at the Hebrew Union College. His other studies include graduate work in History at UCLA. He is also a Senior Rabbinic Fellow at the Shalom Hartman Institute in Jerusalem.

Currently Rabbi Emeritus of Holy Blossom Temple in Toronto, Rabbi Moscowitz served the congregation for twenty-five years, including twelve as Senior Rabbi. Author of Evolution of an Unorthodox Rabbihe is now writing a book on his days as a young radical.