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 John Billingsley Mr. Hazelton Guest Star Ned Schmidtke Dr. Blackwell Guest Star Roxanne Hart Judith Blackwell Guest Star Mark Adair-Rios Jorge Delgado Guest Star Brec Bassinger Emma Guest Star Emily Alyn Lind Ariel Guest Star Luis Jose Lopez Robbie Delgado Guest Star Annamarie Kenoyer Brianna Hazelton Guest Star Susie Abromeit Lily Guest Star Ashley Boettcher Olivia Jones Guest Star Catherine Christensen Kathryn Jones Guest Star Jim Garrity Fire Chief Guest Star Chris Gann Firefighter Guest Star Justin Paul Construction Worker Guest Star Elijah Nelson Ira Guest Star Juan Alfonso Medic 1 Guest Star Aris Mendoza Medic 2 Guest Star Joshua Keller Katz Medic 3 Guest Star Greg Mills News Reporter Guest Star Adalgiza Chermont Drunk Lady Guest Star Michael Seitzman Executive Producer David Semel Executive Producer Ryan McGarry Executive Producer Marti Noxon Executive Producer Linda Goldstein Knowlton Executive Producer Kayla Alpert Writer Michael Brandon Guercio Writer Carol Banker Director