Diego Klattenhoff is a Canadian actor best known for playing Derek in Whistler and Ivan in Men in Trees.
Born in French River, Nova Scotia, Klattenhoff made his acting debut in 2001 with a small part on the Christian drama series Doc. This was followed by more guest spots, including an episode on the thriller 1-800-Missing, Fallen, Supernatural, ER, 24, The Listener, sci-fi series Smallville, Stargate SG-1, Psych, and six episodes of At the Hotel. He played Ivan in Men in Trees. In 2009, he was cast as Mike Callahan on the NBC drama Mercy.edit article