Patricia "Pat" Stevens (September 16, 1945 – May 26, 2010) was an American actress, best known as the second actress to perform the voice of Velma Dinkley in Hanna-Barbera's Scooby and Scrappy-Doo Saturday morning cartoon series. Born as Patricia Szczepaniak in Linden, New Jersey, she was known professionally as Pat Stevens. She voiced the character of Velma Dinkley from 1976 to 1979, leaving the show midway through Scooby-Doo and Scrappy-Doo. She appeared in the recurring role of "Nurse Baker" on the long-running television series M*A*S*H during the same period (1976 to 1979).