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 Greg Henry Dr. David Downey Guest Star Kara Killmer Sylvie Brett Guest Star Marlyne Barrett Maggie Lockwood Guest Star Jayne Atkinson Laura Clay Guest Star Francis Guinan Nathan Clay Guest Star Brian Geraghty Sean Roman Guest Star Karen Aldridge Dr. Kendra Perrington Guest Star Tosin Morohunfola Dr. Vorspan Guest Star Si Osborne Paul Guest Star Tonray Ho Nurse Leah 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