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 Gabrielle Carteris Amy Wolowitz Guest Star Wade Williams Nick Gabler Guest Star Roma Chugani Asra Hudson Guest Star Daniel Gerroll Peter Hudson Guest Star H. Richard Greene Lawrence Egan Guest Star Jaime Alvarez Orderly Guest Star Audrey Moore Emma Guest Star Theo Breaux Medic 1 Guest Star Drea Garcia Medic 2 Guest Star Joshua Keller Medic 3 Guest Star A.J. Tannen Vascular Doctor Guest Star Michael Seitzman Executive Producer David Semel Executive Producer Ryan McGarry Executive Producer Marti Noxon Executive Producer Linda Goldstein Knowlton Executive Producer Molly Newman Writer David Von Ancken Director