Michael Brandt Creator, Executive Producer Derek Haas Creator, Executive Producer 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 Marlyne Barrett Maggie Lockwood Actor Norma Kuhling Dr. Ava Bekker Actor Malcolm McDowell Dr. Marvin Jaffrey Guest Star Ato Essandoh Isidore Latham Guest Star James Vincent Meredith Barry Guest Star Brennan Brown Dr. Sam Abrams Guest Star Sophie Thatcher Deb Guest Star Birgundi Baker Kiki Guest Star Chris Rickett Chad Parker Guest Star Tosin Morohunfola Dr. Allen Vorspan Guest Star Mia Park Nurse Beth Guest Star Sarah Charipar Dr. Grant Guest Star Dick Wolf Executive Producer Andrew Schneider Executive Producer Diane Frolov Executive Producer Matt Olmstead Executive Producer Danielle Gelber Executive Producer Arthur W. Forney Executive Producer Peter Jankowski Executive Producer Joe Chappelle Executive Producer