Pat Stevens, also known as Patricia Stevens (born, Patricia Szczepaniak September 16, 1945 – May 26, 2010) was an American actress and voice actor. She is perhaps best known for her various nurse roles, particularly as Nurse Baker and Nurse Able on M*A*S*H and her role as the second voice of the popular character Velma Dinkley on two popular Saturday Morning cartoon series Scooby-Doo, Where Are You! and The Scooby-Doo Show during the same period (1976–1979).