He is known for playing Private First Class Mark T. Hitchcock in the American adventure and drama television series The Rat Patrol.

[2] Casey joined the cast of the new ABC action and drama television series The Rat Patrol,[2] playing driver PFC Mark T.

[2] Casey guest-starred in television programs including The Rockford Files, Ironside, The Love Boat, Knots Landing, Falcon Crest, The Mod Squad and Barnaby Jones.

[2] He played Rodney Harrington in the soap opera television series Return to Peyton Place.

[7] Casey appeared in films such as Good Guys Wear Black, Acapulco Gold, The Student Nurses, The Great Waldo Pepper and Borderline.