How many movies have Michael V. Gazzo and Peter Zinner collaborated on?

They have worked on 4 movies together! Their first movie together was Crazy Joe (1974) while their highest rated movie together was The Godfather 1901–1959: The Complete Epic (1981). They have not worked together since The Godfather 1901–1959: The Complete Epic (1981). They are most known for their drama films together.