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 Goran Visnjic Dr. Luka Kovac Actor Michael Michele Cleo Finch Actor Maura Tierney Abby Lockhart Actor Paul McCrane Robert Romano Actor Rebecca De Mornay Elaine Nichols Guest Star Paige Moss Amy Stehly Guest Star Myriam Tubert Vanessa Braga Guest Star Erik Palladino Dave Malucci Guest Star Ellen Crawford Nurse Lydia Wright Guest Star Yvette Freeman Nurse Haleh Adams Guest Star Laura Cerón Nurse Chuny Marquez Guest Star Kristin Minter Randi Fronczak Guest Star Gedde Watanabe Nurse Yosh Takata Guest Star Jeff Cahill Transport Dispatcher Tony Fig Guest Star Michael Crichton Executive Producer John Wells Executive Producer