Oliver Platt Dr. Daniel Charles Actor S. Epatha Merkerson Sharon Goodwin Actor Nick Gehlfuss Dr. Will Halstead Actor Yaya DaCosta Nurse April Sexton Actor Colin Donnell Dr. Connor Rhodes Actor Brian Tee Dr. Ethan Choi Actor Torrey DeVitto Dr. Natalie Manning Actor Rachel DiPillo Dr. Sarah Reese Actor D.W. Moffett Cornelius Rhodes Guest Star Annie Potts Helen Guest Star Marc Grapey Peter Kalmick Guest Star Danielle Vega Maria Gonzalez Guest Star Amanda Drinkall Lisa Kindler Guest Star David Parkes Chairman Lindheim Guest Star Alex Weisman Chout Guest Star Amy J. Carle Dr. Patchefsky Guest Star Kelly Owens Dr. Reynolds Guest Star Dale Rivera Agent Ramirez Guest Star Erin Noel Grennan Neonatal Nurse Guest Star Dick Wolf Executive Producer Matt Olmstead Executive Producer Michael Brandt Executive Producer Derek Haas Executive Producer Danielle Gelber Executive Producer Peter Jankowski Executive Producer Joe Chappelle Executive Producer