Matt Olmstead Creator, Executive Producer Dick Wolf Creator, Executive Producer Oliver Platt Dr. Daniel Charles Actor S. Epatha Merkerson Sharon Goodwin Actor Marlyne Barrett Maggie Lockwood Actor Steven Weber Dr. Dean Archer Actor Jessy Schram Dr. Hannah Asher Actor Luke Mitchell Dr. Mitch Ripley Actor Sarah Ramos Dr. Caitlin Lenox Actor Darren Barnet Dr. John Frost Actor Ashlei Sharpe Chestnut Naomi Howard Guest Star Hope Lauren Lynne Murphy Guest Star Ellen Adair Sister Mary Katherine "MK" Trembly Guest Star TJ Karam Detective Joe Tasker Guest Star Lorena Diaz Nurse Doris Guest Star Marie Tredway Nurse Trini Guest Star Lynnette Li Nurse Nancy Guest Star Vena Howard Nurse Graysen Guest Star Sarah Brooks Paramedic Juliette Guest Star Matthew Isler Paramedic Matt Guest Star Joey Slotnick Alistair Reed Guest Star Charlene Amoia Olivia Whitlocker Guest Star Matthew Scott Snyder Body Paint Guest Star Karla Serrato CT Tech Guest Star Carolyn Michelle Jocelyn Shaw Guest Star Kylee D. Allen Arianna Shaw Guest Star Max Garfin Jeremiah Whitlocker Guest Star Jason Huysman Alderman Whitlocker Guest Star Maxel McLoud Schingen Colin Kerr Guest Star Luke Halpern Cloud Guest Star Trace Hamilton Jersey Guest Star Derek Haas Executive Producer Arthur W. Forney Executive Producer Michael Brandt Executive Producer Peter Jankowski Executive Producer Michael Pressman Executive Producer Lauren Glover Writer Brian Tee Director