Career
He is currently playing with the Boston Bruins of the National Hockey League (National Hockey League). Amateur
He helped Hendricken defeat Mount Saint Charles academy in the finals being played at Providence College. Prior to turning professional, Acciari attended Providence College where he played three seasons of National Collegiate Athletic Association Division I hockey with the Providence Friars, registering 32 goals, 33 assists, 65 points, and 72 penalty minutes in 113 games.
In his senior year Acciari help his team capture their first 2015 National Collegiate Athletic Association National Championship, and his outstanding play was recognized when he was named Hockey East"s Best Defensive Forward.
Professional
On June 8, 2015, the Boston Bruins of the National Hockey League (National Hockey League) signed Acciari to a two-year entry-level contract. In the midst of the 2015-2016 season, on March 1 2016, Acciari was called up to the Boston Bruins for the first time as a professional.