Dean Brooks

Dean Kent Brooks (July 22, 1916 – May 30, 2013) or Dean R. Brooks was an American physician and actor. 
Early life.
Brooks was born on July 22, 1916 in Everett, Washington. He studied at University of Kansas Medical School. 
Career.
He was the head of the Oregon State Hospital in 1975 when the movie "One Flew Over the Cuckoo's Nest" was filmed there, which is why he appeared in the movie. He starred as Dr. John Spivey M.D.. Brooks was the superintendent of Oregon State Hospital for 27 years from 1955 to 1982. Brooks was first licensed in Oregon to practice psychiatry in 1950. He retired from the practice of Psychiatric Medicine in 1999.
Later life.
He was married to Ulista Jean Moser until her death in 2006. They had two daughters. 
Death.
Brooks died on May 30, 2013 in Salem, Oregon from natural causes, aged 96.