Marcia Gay Harden Dr. Leanne Rorish Actor Boris Kodjoe Dr. Will Campbell Actor Melanie Chandra Dr. Malaya Pineda Actor Harry Ford Dr. Angus Leighton Actor Benjamin Hollingsworth Dr. Mario Savetti Actor Jillian Murray Dr. Heather Pinkney Actor William Allen Young Dr. Rollie Guthrie Actor Luis Guzmán Jesse Sallander Actor Rob Lowe Col. Ethan Willis Actor Noah Gray-Cabey Dr. Elliot Dixon Guest Star Emily Tyra Dr. Noa Kean Guest Star Nafessa Williams Dr. Charlotte Piel Guest Star Eric Roberts Vince Savetti Guest Star Camryn Manheim Alice Williams Guest Star Alexandra Grey Beth Guest Star Angela Relucio Risa Park Guest Star Abigail Klein Nurse Eloise Guest Star John Deignan Danny Williams Guest Star Jonathon McClendon Holden Paxton Guest Star Christopher Wiehl Alex Paxten Guest Star Julie McNiven Rose Guest Star Adrian Burks Mark Goddard Guest Star Charlie Barnett Brian Goddard Guest Star Terrence Edwards Medic 1 Guest Star Amy Shelton-White Medic 2 Guest Star Aris Mendoza Medic 3 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 Lee Rose Director