Anthony Edwards Dr. Mark Greene Actor Eriq La Salle Dr. Peter Benton Actor Noah Wyle Dr. John Carter Actor Julianna Margulies Head Nurse Carol Hathaway Actor Gloria Reuben Jeanie Boulet Actor Laura Innes Dr. Kerry Weaver Actor Alex Kingston Dr. Elizabeth Corday Actor Kellie Martin Lucy Knight Actor Lisa Nicole Carson Actor Paul McCrane Robert Romano Actor Abraham Benrubi Actor Teri Garr Celinda Randlett Guest Star Corey Parker Robinson Antoine Bell Guest Star Cress Williams Officer Reggie Moore Guest Star Kyle Kendrick Jack Toberen 1 Guest Star Matthew Kendrick Jack Toberen 2 Guest Star John Aylward Guest Star Lily Mariye Nurse Lily Jarvik Guest Star Laura Cerón Nurse Chuny Marquez Guest Star Conni Marie Brazelton Nurse Connie Oligario Guest Star Deezer D Nurse Malik McGrath Guest Star Kristin Minter Randi Fronczak Guest Star Michael Crichton Executive Producer John Wells Executive Producer