Just once- in 2001-2002, with the Philadelphia 76ers.
Julius Erving won his only NBA championship with the Philadelphia 76ers in 1983.
3 championships (1955, 1967, 1963) the 1955 championship was earned when they were known as the Syracuse Nationals.
Wilt Chamberlain was a member of two NBA championship teams, the 1966-67 Philadelphia 76ers and the 1971-72 Los Angeles Lakers.
The Philadelphia 76ers won three championships, one in 1954-55. one in 1966-67, and one in 1982-83
The Sixers have been to the championship six time and have a 2-4 record
Wilt Chamberlain was on 2 championship teams; the 1966-1967 Philadelphia 76ers and the 1971-1972 Los Angeles Lakers. Two, one with the 76ers in the 1966-67 season and one with the Lakers in the 1971-72 season.
Allen Iverson has never won an NBA championship. The closest he's got to winning one, was reaching the 2000-01 NBA Finals with the Philadelphia 76ers.
As of the 2007-08 season, the 76ers have won 2 NBA championships: 1966-67, 1982-83