Amber Benson plays Jill Avery in this episode. She had a regular role playing Tara on "Buffy The Vampire Slayer." In the previous episode, Emma Caulfield and Leonard Roberts both guest starred as Leanne Thompson and Ryan respectively. They also had regular roles on "Buffy" as Anya and Forrest Gates.
While Mr. Bishop is speaking to both doctors about treatment options for his daughter, he addresses Cooper as Dr. Cooper and not Dr. Friedman.