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 Laura Cerón Guest Star Omar Epps Guest Star Glenne Headly Guest Star Kirsten Dunst Charlie Chiemingo Guest Star John Rubinstein Dr. Kenner Guest Star Ann Hearn Shelly Dunleavy Guest Star Bellina Logan Nurse Kit Guest Star James McDonnell Pat Guinet Guest Star Bill Calvert Psych Intern Guest Star Bruce Wright George Dunleavy Guest Star Conni Marie Brazelton Nurse Connie Oligario Guest Star Deezer D Nurse Malik McGrath Guest Star Vanessa Marquez Nurse Wendy Goldman Guest Star Kristin Minter Randi Fronczak Guest Star Michael Crichton Executive Producer John Wells Executive Producer