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 Julie Marie Berman Dr. Sam Zanetti Guest Star Marlyne Barrett Maggie Lockwood Guest Star Gregg Henry Dr. David Downey Guest Star Susie Abromeit Zoe Roth Guest Star Eva Kaminsky Jennifer Baker Guest Star Ross Kimball Sal Baker Guest Star Marc Grapey Peter Kalmick Guest Star Tim Hopper Ken Gallagher Guest Star Roland Buck III Noah Sexton Guest Star Michael Harney Dr. Ron Unger Guest Star Aubree Young Shiloh Kane Guest Star Matthew Collins Jim Guest Star Sandra Marquez Alicia Rivera Guest Star Lorena Diaz Nurse Doris Guest Star Amanda Marcheschi Nurse Dina 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