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 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).
Career:
Stevens 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 (1976–1979). On M*A*S*H, Stevens, who appeared in various nurse roles in 15 episode appearances, where she was credited first as Nurse Mitchell, then Nurse Baker, Nurse Stevens, Nurse Brown and Nurse Able, before appearing again as Nurse Baker in the episode “Margaret’s Marriage” in Season Five, and then finally, her final episode appearance in “Major Ego” during Season Seven, when she was credited as a Duty Nurse.
Personal life:
Stevens married former 1970's TV character actor Jess Nadelman in 1980; they had two children, Sara and David. According to an obituary published in the Worcester Telegram & Gazette, Stevens later transitioned from acting to teaching, where she worked “with elementary and secondary education teachers, integrating art into the regular curriculum including science and history.”
Death:
Stevens died May 26, 2010, after a long battle with breast cancer at the age of 64 in Rutland, Massachusetts. She was surrounded by her husband, Jess Nadelman and their children, Sara and David, as well as her six siblings.

Source: wikipedia.org