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 Steven Culp Desmond Leighton Guest Star Kathleen Rose Perkins Amanda Nolan Guest Star Chelsea Rendon Anita Guest Star Billy Malone Barry Guest Star Laura Regan Janie Guest Star Seth Carr Zane Jacobson Guest Star Jamil Walker Smith Eric Guest Star Sherri Saum Shawna Guest Star Joshua Weinstein Xander Westin Guest Star Meredith Roberts Quill Karen Chapman Guest Star Rene Rosado Julio Nortes Guest Star Omar Leyva Taco Truck Guy Guest Star Rolando Molina Maintenance Man Guest Star Cuyle Carvin Fire Rescue Perkins Guest Star Michael Seitzman Executive Producer David Semel Executive Producer Ryan McGarry Executive Producer Marti Noxon Executive Producer Linda Goldstein Knowlton Executive Producer David Von Ancken Writer Corey Evett Director Matthew S. Partney Director