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 Gregg Henry Dr. David Downey Guest Star Marlyne Barrett Maggie Lockwood Guest Star Deron J. Powell Tate Jenkins Guest Star Peter Mark Kendall Joey Thomas Guest Star Brennan Brown Dr. Sam Abrams Guest Star Jeff Hephner Jeff Clarke Guest Star Marc Grapey Peter Kalmick Guest Star Patti Murin Nina Shore Guest Star Brett Schneider Nick Thomas Guest Star Sarah Charipar Dr. Deirdre Grant Guest Star Tosin Morohunfola Dr. Vorspan Guest Star Lorena Diaz Nurse Doris Guest Star Amanda Marcheschi Nurse Dina Guest Star Leena Kurishingal Dr. Abby Patel 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