Dick Wolf Creator, Executive Producer Matt Olmstead Creator, Executive Producer Oliver Platt Dr. Daniel Charles Actor S. Epatha Merkerson Sharon Goodwin Actor Nick Gehlfuss Dr. Will Halstead Actor Brian Tee Dr. Ethan Choi Actor Marlyne Barrett Maggie Lockwood Actor Dominic Rains Dr. Crockett Marcel Actor Sasha Roiz Jack Dayton Guest Star Asjha Cooper Dr. Vanessa Taylor Guest Star Devin Kawaoka Dr. Kai Tanaka-Reed Guest Star Johnny Wu Randall Shentu Guest Star Wayne T. Carr Grant Young Guest Star Lorena Diaz Nurse Doris Guest Star Michael Vaughn Shaw X-Ray Tech Mike Guest Star Courtney Rioux Paramedic Courtney Guest Star Kelley Mack Penelope Jacobs Guest Star Jaye Ladymore Caitlin Mills Guest Star Julian Parker Steve Mills Guest Star Lainie Kazan Maria Piscotta Guest Star Usman Ally Samir Baqri Guest Star Michelle Relerford Adrienne Moss Guest Star Diane Frolov Executive Producer Andrew Schneider Executive Producer Derek Haas Executive Producer Arthur W. Forney Executive Producer Michael Brandt Executive Producer Peter Jankowski Executive Producer Michael Pressman Executive Producer Timothy Busfield Director Gabriel L. Feinberg Writer Lily Dahl Writer