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 Yaya DaCosta Nurse April Sexton Actor Brian Tee Dr. Ethan Choi Actor Torrey DeVitto Dr. Natalie Manning Actor Marlyne Barrett Maggie Lockwood Actor Dominic Rains Dr. Crockett Marcel Actor Brennan Brown Dr. Samuel "Sam" Abrams Guest Star Tehmina Sunny Dr. Sabeena Virani Guest Star Scarlett Wand Anna Charles Guest Star Jill Abramovitz Susan Charles Guest Star Marc Grapey Peter Kalmick Guest Star Lorena Diaz Nurse Doris Guest Star Melissa Canciller Nurse Melissa Guest Star Michael Vaughn Shaw X-Ray Tech Mike Guest Star Sarah Brooks Paramedic Juliette Guest Star C. Anthony Jackson Security Guard Earl Guest Star Tasha Anne James Charge Nurse Patty Guest Star Diane Frolov Executive Producer Andrew Schneider Executive Producer Derek Haas Executive Producer Arthur W. Forney Executive Producer Michael Brandt Executive Producer Michael Pressman Executive Producer Peter Jankowski Executive Producer John Polson Director Stephen Hootstein Writer Daniel Sinclair Writer