Notable for his role as Blake Moran on the CBS series Madame Secretary, Bergen is also recognized for his portrayal of Bob Gaudio in the 2014 musical movie Jersey Boys. His other credits include episodes of Desperate Housewives and Person of Interest.
After training for many years at New York's famous Stagedoor Manor Performing Arts Center, he made his television debut in a 1996 episode of The Dana Carvey Show.
He co-starred with Paul Sorvino in the 2013 musical film How Sweet It Is.
He was born and raised in New York City.
His Madam Secretary character is the personal assistant to Tea Leoni's character, fictional U.S. Secretary of State Elizabeth Faulkner McCord.