Anthony Edwards Dr. Mark Greene Actor George Clooney Dr. Doug Ross Actor Sherry Stringfield Dr. Susan Lewis 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 Christine Elise Actor Abraham Benrubi Guest Star Amy Aquino Dr. Janet Coburn Guest Star Tim DeZarn Mr. Krawczyk Guest Star Mary Mara Loretta Sweet Guest Star David Spielberg Dr. Neil Bernstein Guest Star Carlos Gomez Paramedic Raul Melendez Guest Star Taylor Young Dr. Jane Pratt Guest Star Ellen Crawford Nurse Lydia Wright Guest Star Yvette Freeman Nurse Haleh Adams Guest Star Ron Eldard Guest Star Maria Hurtado Pregnant Woman Guest Star Jesse Littlejohn Noah Krawczyk Guest Star Michael Crichton Executive Producer John Wells Executive Producer