 Quincys first name is never revealed, but his first initial is. In  the episode "Accomplice To Murder" (Season 3, episode 16) Quincy  gives his business card to a woman, and his name is shown as Dr R  Quincy. Jack Klugman (qv) says the most common question he gets  asked by fans is "Whats Quincys first name?", to which he always  answers..."Doctor!"