Bergen is best known as Blake Moran on the Madam Secretary, and was most recently seen as ADA Robert Jones on the final season of Bull
He portrayed Bob Gaudio in the film adaptation of Jersey Boys, reprising his performance from the touring and Las Vegas casts of the stage production.
On Broadway, Bergen appeared as Dr. Pomatter in Waitress. Other TV and film credits include Gossip Girl, The Good Fight and Humor Me.
Produced by Barry and Fran Weissler, Chicago is the winner of six 1997 Tony Awards including Best Musical Revival and the Grammy Award for Best Musical Cast Recording.