Popular character actor Kevin Hagen is best remembered for his role as Doc Hiram Baker in Little House on the Prairie. He has appeared in countless TV series like Wagon Train, The Twilight Zone, Have Gun Will Trave, Bonanza, M*A*S*H and Knots Landing, as well as films such as The Light in the Forest (1958), Pork Chop Hill and Shenandoah" (1965)