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 Nora Dunn Dr. Lonnie Richardson Guest Star Riley Voelkel Milena Jovanivic Guest Star Curtiss Cook Lt. Reginald "Reggie' Scott Guest Star Anna Zhang Felicia Guest Star Lorena Diaz Nurse Doris Guest Star Marie Tredway Nurse Trini Guest Star Renelle Nicole Nurse Trisha Guest Star Patricia Kane Nurse Sandra Guest Star Leon Addison Brown Gerald Simmons Guest Star Darius De La Cruz Luis Pena Guest Star Malia Hu Mindy Zheng Guest Star Camille Perry Zoe Walsh Guest Star Gregory Linington Theo Walsh Guest Star Elizabeth Laidlaw Caitlin Walsh Guest Star Gillian Saker Ingrid Sorenson Guest Star Brenda Barrie Meg Harris Guest Star Jordan Coughtry Jonathan Harris Guest Star Caprice Jones E.D. Nurse 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 Stephen Hootstein Writer Daniel Sinclair Writer