Guest Stars Nate Santana as Dr. James Lanik Roland Buck III as Dr. Noah Sexton Molly Bernard as Med Student Elsa Currie Ian Harding as Phillip Davis Jesse Spencer as Captain Matthew Casey Randy Flagler as Firefighter Harold Capp Allison Wick as Lacey Wilson Nick Ivey as Med Student Steve Co Starring Lorena Diaz as Nurse Doris Courtney Rioux as Paramedic Courtney Jeremy Shouldis as Dr. Marty Peterson Casey Tutton as Nurse Monique Lawson Amanda Marcheschi as Nurse Dina Garston Sarah Brooks as Paramedic Juliette Ari Morgan as Owen Jeffrey Manning Kristina Valada-Viars as Nurse Maya Diaz Jeff Dumas as Perfusionist Roy Bellino Anthony Ferraris as Squad 3 Driver Tony Ferraris Jennifer Cudahy as Nurse Renee Joe Krowka as Richard Lentz Sarah Lo as Addison Jennings Candice Rose as Catherine Wilson Debo Balogun as Paramedic Darren Clark Victor Musoni as Taylor Holmes Dan Rodden as Chief Engineer Geary Chloe Skoczen as Kayla Holt Paul-Jordan Jansen as NIPCO Employee