Tergesen was born in Boston, Massachusetts and graduated from Valley Regional High School in nearby Deep River. He moved to New York to try to become an actor. He graduated from the American Musical and Dramatic Academy (AMDA)'s two-year program in Manhattan, where, from 1986 to 1989, he worked at the Empire Diner.
Tergesen was born in Boston, Massachusetts and graduated from Valley Regional High School in nearby Deep River. He moved to New York to try to become an actor. He graduated from the American Musical and Dramatic Academy (AMDA)'s two-year program in Manhattan, where, from 1986 to 1989, he worked at the Empire Diner.