Ryan Eggold Dr. Max Goodwin Actor Freema Agyeman Dr. Helen Sharpe Actor Janet Montgomery Dr. Lauren Bloom Actor Jocko Sims Dr. Floyd Reynolds Actor Tyler Labine Dr. Iggy Frome Actor Matthew Jeffers ED Chief Resident Dr. Mark Walsh Guest Star Em Grosland ED Nurse Kai Brunstetter Guest Star Olivia Khoshatefeh ED Resident Yasmin Turan Guest Star Teresa Patel Paramedic Harvell Guest Star Elias Toufexis Ronnie Cooper Guest Star Shiva Kalaiselvan Dr. Leyla Shinwari Guest Star Genevieve Angelson Dr. Mia Castries Guest Star Conner Marx Ben Meyer Guest Star Debra Monk Karen Brantley Guest Star Sandra Mae Frank Dr. Elizabeth Wilder Guest Star Ryan Faucett Trevor Vaughan Guest Star Mike Doyle Martin McIntyre Guest Star Frances Turner Dr. Lyn Malvo Guest Star Alejandro Hernández Nurse Casey Acosta Guest Star Larae Muscat Sameera Guest Star Adam Rose Bartender, aka Chad Barton Guest Star Daren Donofrio Police Officer Guest Star Nirvaan Pal Saleem Guest Star Delaney Quinn Harper Guest Star Ehad Berisha ED Resident Huxley Guest Star Eric Payne Dr. Myron Ayton Guest Star Jennifer Betit Yen OR Nurse Aimee Kamoe Guest Star Victor Hedges Building Superintendent Evans Guest Star David Schulner Executive Producer Peter Horton Executive Producer Michael Slovis Executive Producer David Foster Executive Producer, Writer Aaron Ginsburg Executive Producer Shaun Cassidy Executive Producer