Anthony Edwards Dr. Mark Greene Actor George Clooney Dr. Doug Ross 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 Maria Bello Dr. Anna Del Amico Actor Kelsey Mulrooney Sophie Guest Star Mickey Rooney Dr. George Bikel Guest Star Ed Lauter Fire Captain Dannaker Guest Star Bellina Logan Nurse Kit Guest Star Christine Healy Hospital Administrator Harriet Spooner Guest Star Michael Kagan Chuck Arteburn Guest Star Laura Cerón Nurse Chuny Marquez Guest Star Deezer D Nurse Malik McGrath Guest Star Lily Mariye Nurse Lily Jarvik Guest Star Kristin Minter Randi Fronczak Guest Star Gedde Watanabe Nurse Yosh Takata Guest Star Emily Wagner Doris Pickman Guest Star Michael Crichton Executive Producer John Wells Executive Producer