Guest Stars Alejandro Hernandez as Casey Acosta Debra Monk as Karen Brantley Megan Byrne as Gladys Miller Christine Chang as Dr. Agnes Kao Keren Lugo as Dr. Diana Flores Nadia Affolter as Mina Jahani Daniel Dae Kim as Dr. Cassian Shin Emma Hong as Juliette Kimura Audrey Bennett as Luisa Jacob Dylan Igielski as Ollie Alex Weisman as Murph Coleman Juan Carlos Hernandez as Wilmer Belasco Nikkole Salter as Isabel Sarasa Co Starring Matthew Jeffers as Dr. Mark Walsh Em Grosland as Nurse Kai Brunstetter Stacey Raymond as Paramedic Kerry Whitaker Emma Ramos as Resident Mariana Jennifer Betit Yen as Nurse Aimee Kamoe Michael Basile as Paramedic Rob Moreland Jenna Bosco as Paramedic Herrera Sol Marina Crespo as Nurse Kat Della Cruz Jeff Kim as Dr. Alan Kapralien Brandon Ocasio as Orderly Perez Akram Basuni as Paramedic Nazari SHukura as Prison Guard Raina Eric Payne as Dr. Myron Anton Marissa Matrone as Dr. Margaret Baker Erick Zamora as Custodian Matias Reyes Michael Alexander Henry as Dr. Christopher Madden Lily Du as Dr. Lawan Panyacosit Eduardo Navas as Maintenance Worker Rafael Myles Humphus as Hammond Sims Anastacia McCleskey as Dr. Phylicia Elder Gabriella Piazza as Resident Elise Gasecki Silvia Dionicio as Katie B. Todd Johnston as Tom James Tison as Josh Sparrowhawk as Nova Harinder Sood as Aasif Aidan Nicolas as Hector Belasco Eddie Carroll as Brian Karan Kumar as Sai Farrah Cine as Muriel Ashley Nicole Baptiste as Audra Kenneth De Abrew as Kebir Abad Malinda Logan as Kyla Fred Berman as Dr. Harold Gallant Patrick Chang as Louis Christopher Gerson as Dr. Eisner