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 Angela Relucio Risa Park Guest Star Vanessa Martinez Flora Saracho Guest Star Julian Zane Pablo Saracho Guest Star Gabrielle Carteris Amy Wolowitz Guest Star Christopher Cousins John Harris Guest Star Nicole Steinwedell Angela Guest Star Lilli Birdsell Susan Harris Guest Star Skyler Day Veronica Franco Guest Star Joshua Keller Katz Paramedic 3 Guest Star Cathryn de Prume Nancy Smith Guest Star Andres Perez-Molina Paramedic 4 Guest Star Stoney Westmoreland Rick Biddenger Guest Star Aris Mendoza Paramedic 2 Guest Star June Squibb Dorothy Guest Star Lucas Kwan Peterson Father Guest Star Shelly Benedict Nurse Guest Star Mark Atteberry Anesthesiologist Guest Star Daniel Gonzalez Hector Guest Star Pat Harvey News Anchor Guest Star Tait Fletcher Biker Guest Star Theo Breaux Paramedic 1 Guest Star Joseph Bayard Stax Guest Star Christina Cannarella Real Medical 1 Guest Star Michael Seitzman Executive Producer David Semel Executive Producer Ryan McGarry Executive Producer Marti Noxon Executive Producer Linda Goldstein Knowlton Executive Producer Corinne Marrinan Writer Nick Gomez Director