He was best known for playing the roles of Jason Craig on Generations (1989 to 1991), Jonny and Rush Carrera on The Bold and the Beautiful (1997 to 1998), Jim Lemay on Guiding Light (1999 to 2000), and Dimitri Marick on All My Children (2001).

He attended Virginia Tech, but he decided to leave school to work as a tree surgeon.

He was spotted by a representative from the Zoli Agency in New York and decided to move to the city.

[4] He also appeared in the television film Nightingales (1988), the pilot for an Aaron Spelling series that aired on NBC.

[5] Addabbo briefly appeared on General Hospital before being cast as Jason Craig on the NBC soap opera Generations in 1989.

[6] From 1992 to 1996, Addabbo made recurring appearances on the Showtime series Red Shoe Diaries.

[10] In 1996, Addabbo guest starred on High Tide, The Nanny, The Client, and Pacific Blue.

Addabbo was cast on the ABC soap opera All My Children in 2001, playing Dimitri Marick.

[1] In 2001, he co-starred with his Guiding Light castmates Beth Ehlers, Justin Deas, and Kurt McKinney in a short film, Supertalk.