Zachary Quinto Dr. Oliver Wolf Actor, Director Tamberla Perry Dr. Carol Pierce Actor Ashleigh LaThrop Dr. Ericka Kinney Actor Alex MacNicoll Dr. Van Markus Actor Aury Krebs Dr. Dana Dang Actor Spence Moore II Dr. Jacob Nash Actor Teddy Sears Dr. Josh Nichols Actor Donna Murphy Dr. Muriel Landon Actor Bellamy Young Dr. Amelia Fredrick Guest Star Catherine Tait Nurse Louise Guest Star Gary Pearson Dr. Stephens Guest Star Derek Johns Otto Guest Star David C. Thompson Billy Guest Star Sanjay Talwar Jonah Guest Star Antonette Rudder Nurse Yvonne Guest Star Andy Assaf Hector Guest Star Sarah Steele Sofia Guest Star Ben Levin Chef Johnny Tang Guest Star Rosie Simon Nari Kim Guest Star Marisa McIntyre Ruby Barish Guest Star Jacklyn Francis Board Member #2 Guest Star Jordan Andrez Line Cook #2 Guest Star Michael Grassi Executive Producer, Writer Greg Berlanti Executive Producer Sarah Schechter Executive Producer Leigh London Redman Executive Producer Lee Toland Krieger Executive Producer DeMane Davis Executive Producer Melissa Aouate Executive Producer Henrik Bastin Executive Producer Andy Serkis Executive Producer Jonathan Cavendish Executive Producer Will Tennant Executive Producer Sara Saedi Writer