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 Sophia Bush Erin Lindsay Guest Star Ato Essandoh Isidore Latham Guest Star Jeff Hephner Jeff Clarke Guest Star Roland Buck III Noah Sexton Guest Star Brennan Brown Dr. Sam Abrams Guest Star Jenny Bacon Angela Azen Guest Star Doris Morgado Zulmira Céspedes Guest Star Morgan Lily Nancy Leigh Guest Star Guy Massey Dave Azen Guest Star Cara Greene Dr. Anita Baker Guest Star Jeremy Shouldis Dr. Marty Peterson Guest Star Lorena Diaz Nurse Doris Guest Star Mia Park Nurse Beth 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