After high school she was a shoe salesperson for Sears and has worked as a hostess in a restaurant.
She is skilled in Aikido and stage combat.
Has been in a relationship with Martin Katz since 1981.
Susanna received a Dramalogue Award for her role as Luisa in "A Shayna Maidel." She was also nominated for Best Actress by the San Diego Critics Circle for her role as Agnes in "Agnes of God."
Got the role of the "Borg Queen" on Star Trek: Voyager (1995) only because Alice Krige (who played the role in the movie Star Trek: First Contact (1996)) refused to reprise her role. For the final episode, Susanna Thompson was not available (because of shooting Once and Again (1999)) so Alice Krige played the Borg Queen in the final episode.