A 6'9" power forward/center from Saint Joseph's University, Bantom won a silver medal at the 1972 Summer Olympics as a member ofthe United States national basketball team, who lost a controversial final game to the Soviet Union. He was selected by the Phoenix Suns with the eighth pick of the 1973 NBA draft, and he embarked upon a nine-year NBA (1973–82) career as a member of the Suns, Seattle SuperSonics, New York Nets, Indiana Pacers, and Philadelphia 76ers. He earned All-Rookie Team honors and ended his NBA career with 8,568 total points, 4,517 total rebounds, and 1,623 total assists. From 1982 until 1989, Bantom played professionally in Italy.
Since retiring as a player, Bantom has served as the licensing manager for NBA International, the NBA International director of marketing, the NBA senior vice president of player development, and the executive vice president of referee operations.
Bantom is a father of four children, three daughters and a son.