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 Marlyne Barrett Maggie Lockwood Actor Norma Kuhling Dr. Ava Bekker Actor Kara Killmer Sylvie Brett Guest Star Marina Squerciati Kim Burgess Guest Star Heather Headley Gwen Garrett Guest Star D.W. Moffett Cornelius Rhodes Guest Star Anna Enger Ritch Agent Ingrid Lee Guest Star Nate Santana Dr. Jimmy Lanik Guest Star Jeremy Shouldis Dr. Marty Peterson Guest Star Molly Bernard Elsa Curry Guest Star Lorena Diaz Nurse Doris Guest Star Casey Tutton Nurse Monique Guest Star Colby Lewis Terry McNeal Guest Star Dick Wolf Executive Producer Andrew Schneider Executive Producer, Writer Diane Frolov Executive Producer, Writer Matt Olmstead Executive Producer Arthur W. Forney Executive Producer Peter Jankowski Executive Producer Michael Waxman Director