Donald Bellisario net worth: Donald Bellisario is a prolific American television producer who has a net worth of $250 million. Donald Bellisario is most famous for having created the television shows NCIS, JAG, Magnum PI and Quantum Leap. Bellisario was born on August 8, 1935 in Cokeburg, Pennsylvania. He served in the Marines for four years between 1955 and 1959 before earning a bachelors degree from Penn State where he majored in journalism. Bellisario's first job after graduating was as a copywriter for an agency. In the early 1970s he moved from Pennsylvania to Hollywood to pursue his dream of screenwriting. Bellisario would go on to create some highly successful and lucrative TV shows that have earned him a fortune in syndication. Magnum PI ran for eight seasons, Quantum Leap ran four seasons, JAG ran for 10 seasons and NCIS has run from 2003 to the present. All of these shows are still aired around the world in syndication every day.