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 Ato Essandoh Isidore Latham Guest Star Michael Gill Robert Haywood Guest Star Roland Buck III Noah Sexton Guest Star Jennifer Baxter Mrs. Paulson Guest Star Erica Gimpel Lydia Singleton Guest Star Emma Duncan Maia Frisch Guest Star Marc Grapey Peter Kalmick Guest Star Kara Killmer Sylvie Brett Guest Star Jesse Lee Soffer Jay Halstead Guest Star Lorena Diaz Nurse Doris Guest Star Casey Tutton Nurse Monique Guest Star Mia Park Nurse Beth Guest Star Tonray Ho Leah Guest Star Jeremy Shouldis Dr. Marty Peterson Guest Star Desmond Gray Paramedic Desmond 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