Guest Stars Lorena Diaz as Nurse Doris Devin Kawaoka as Kai Tanaka-Reed Gregory Alan Williams as Bert Goodwin Luigi Sottile as Sean Archer Alet Taylor as Liliana Wapniarski Henderson Wade as Dr. Loren Johnson Beth Lacke as Dr. Margo Collins John Earl Jelks as Dr. Dennis Washington Kristof Konrad as Pawel Wapniarski Nicolette Robinson as Tara Goodwin Daniel Dorr as Robert Sullivan Ashlei Sharpe Chestnut as Med. Student Naomi Howard Jeff Kober as Doug Green Tyler Ritter as Derek Walker Brad Beyer as Tighe Willis Savannah Youngblood as Katherine Walker Christopher Mowod as Dustin Norris Co Starring Courtney Rioux as Paramedic Courtney Marie Tredway as Nurse Trinidad "Trini" Campos Lynnette Li as Nurse Nancy Michael Vaughn Shaw as X-Ray Tech Mike Amanda Marcheschi as Nurse Dina Garston Sarah Brooks as Paramedic Juliette Elena Marisa Flores as Officer Rosado Carlos Rogelio Diaz as Nurse Hank Logan Kathleen Czajkowski as X-Ray Technician Kathleen Theresa Ro as Nurse Danielle Li Anthony Mannix as Paramedic Harriet Plumpp as Manager Antoine McKay as Ed Cartwright Toni Buena as Reyna Joe Kim as Dr. Cho Jamy Pierrevil as Attendant