Markus Redmond (born February 5, 1971) is an American actor. He is best known for his role as Raymond Alexander, in the comedy-drama series Doogie Howser, M.D., co-created by Steven Bochco. Redmond joined the cast at the start of the show's second season in 1990 until the series ended in 1993. He worked with Bochco again on two other series, in recurring roles as P.O.