Though Joseph is aged 59, his personal life is still a matter of secret in the media. There is no any definitive information about his love affairs, girlfriend, married life, spouse and divorce in the media.
After his high school graduation, Joseph joined New York University's Graduate Acting Program at the Tisch School of the Arts. He also attended Stanford University where he studied acting. He is popular for starring the role of “Johnny Boy" Soprano, father of Tony Soprano, in an American crime drama television series The Sopranos. He is also popular for his role in the Broadway shows like The Light in the Piazza, Conversations with My Father and The Boys from Syracuse. The actual figure about his net worth is unknown.