In one scene, Stan refers to the demon orderly as Dr. Cox and asks him to check on a screaming patient. Then suggests the orderly call the cause of the scream by a girl's name. This is an obvious reference to John. C. McGinley's role and behavior as Dr. Cox in the show Scrubs.
In the scene where Denise is in the waiting room before her initial contact with Stans Doctor there is a page over the intercom for P.W. Herman. This is a dig at Pee Wee Herman.