Guest Stars Debra Monk as Karen Brantley Megan Byrne as Gladys Miller Keren Lugo as Dr. Diana Flores Dierdre Friel as Ella Daniel Dae Kim as Dr. Cassian Shin Co Starring Opal Clow as Luna Nora Clow as Luna Mahalet Dejene as Anesthesiologist Nyala Abebe Marvin Avila as Nurse Ocampo Erick Betancourt as Security Guard McAdams Kimiye Corwin as Dr. Jan Matsudaira Arash Mokhtar as Dr. Aldo Vartka Naaji Kenn as Patient Rosalee Shaquita Smith as Anesthetist Esteban Suero as Paul Argento Jax Jackson as Patient Luol Greg Jackson as Patient Terrence Shadrack Boakye as Messenger Braden Jorja Brown as Messenger Kaina Candice Jean-Jacques as Brenna Argento Brian Lucas as Patient Rodrigo Krystal Torres as Agent Douglas Sam Kebede as Messenger Carter Makia Martin as Patient Denise Ray Demattis as Patient Carl Erikka Walsh as Agent Sully Sandra Berrios as Patient Susanna