An ER patient dressed as an astronaut with "J. Masius" on his space suit's name tag is ordered to the psych ward by Fiscus. John Masius was one of the one of the series' producers and writers.
"Steven Kiley" was the name of Marcus Welby's junior colleague. Marcus Welby, M.D. (1969)
When Mike O'Connor was leaving the hospital with his brother and his father, he was carrying a copy of the Marvel comic "Ka-Zar the Savage" #25.