Guest Stars Alejandro Hernandez as Casey Acosta Debra Monk as Karen Brantley Lisa O'Hare as Georgia Goodwin Ian Duff as Michael Duke J.J. Feild as Dr. Zach Ligon Ron Rifkin as Dean Peter Fulton Matthew Bellows as Dr. Clint Hartman Daniel Jenkins as Dr. Handler Alfredo Narciso as Dr. Juan Questa Hunter Emery as Warren Bell Janab Kareem as Amalia Shana Solomon as Ms. Trombley Eileen Grubba as Elizabeth Archer Anthony Michael Lopez as Nathan Fisk Yonel Dorelis as Quinn Co Starring Jenna Bosco as Paramedic Herrera Tim Simon as Lab Tech George Michael V. Sulsona as Older Vet Chris Walker as Vet #1 Sarah Travers Henry as Makayla Bell Ariel Kim as Cardiac Nurse Melodie Wolford as Quinn's Wife Maeve Crispi as Recovery Nurse Omar Rahim as Dr. Wahid Hawani