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 Guest Star Marina Squerciati Kim Burgess Guest Star Jesse Lee Soffer Jay Halstead Guest Star Annie Potts Helen Guest Star Deron J. Powell Tate Jenkins Guest Star Michael Nathanson Mr. Tacker Guest Star Eva Kaminsky Jennifer Baker Guest Star Ross Kimball Sal Baker Guest Star Peter Mark Kendall Joey Thomas Guest Star Jason Bradley Mr. Patrick Guest Star Amy J. Carle Dr. Patchefsky Guest Star Tosin Morohunfola Dr. Vorspan 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