Kang was a series regular on CBS's The Mentalist as Special Agent Kimball Cho. He appeared in Rambo (2008) and also on such TV shows as The Office, Chappelle's Show, The Vampire Diaries and Monk. He returned to his theater roots for Julia Cho's new play Aubergine, playing one of the lead characters Ray. It premiered at the Berkeley Repertory Theatre in February 2016 before touring to various theatres.