Marcia Gay Harden Dr. Leanne Rorish Actor Bonnie Somerville Christa Lorenson Actor Raza Jaffrey Dr. Neal Hudson Actor Luis Guzmán Jesse Sallander Actor Melanie Chandra Malaya Pineda Actor Harry Ford Angus Leighton Actor Benjamin Hollingsworth Mario Savetti Actor William Allen Young Dr. Rollie Guthrie Actor Kevin Dunn Dr. Taylor Guest Star Angela Relucio Risa Park Guest Star Ellia English Isabel Mendez Guest Star Cress Williams Cole Guthrie Guest Star Gabrielle Carteris Amy Wolowitz Guest Star Shiri Appleby Carla Niven Guest Star Zachary Bostrom Killian Wahler Guest Star Sara Paxton Sophie Guest Star Stephen A. Chang Medic 2 Guest Star Lyn Alicia Henderson Medic 1 Guest Star Elaine Mani Lee Phlebotomist Guest Star Linara Washington Rebecca Kahn Guest Star Sayeed Shahidi Randell Guest Star Stephen Spinella Ted Guest Star Peter James Smith Dermatologist Guest Star Carmella Riley Nurse Kim Guest Star Ursula Burton Nurse Guest Star Josh Kirby Young Man Guest Star Deus Xavier Scott Medic 3 Guest Star Christina Cannarella ER Nurse Guest Star Michael Seitzman Executive Producer David Semel Executive Producer Ryan McGarry Executive Producer Marti Noxon Executive Producer Linda Goldstein Knowlton Executive Producer David Marshall Grant Writer Alex Zakrzewski Director