|Organization:||St. John's Edge|
After his playing career, Plumb founded Vancouver Basketball, Inc. to train young basketball players. His time there led him to join the London Lightning of the National Basketball League of Canada as an assistant coach and head scout. In the 2016-2017, under head coach Kyle Julius, Plumb and the Lightning won the league title. In 2017–18, he became an assistant coach for the St. John's Edge. On July 5, 2018, the team announced that Doug would take over as the Head Coach for the 2018-19 season.