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 Laura Innes Dr. Kerry Weaver Actor Abraham Benrubi Actor Kelly Jo Minter Crack Mom Guest Star Elizabeth Correa Tina Guest Star Lindsay Crouse Dr. Anna Castiglioni Guest Star Nia Long Christy Wilson Guest Star Scottie Pippen Scottie Pippen Guest Star James Farentino Ray Ross Guest Star Ellen Crawford Nurse Lydia Wright Guest Star Conni Marie Brazelton Nurse Connie Oligario Guest Star Cecile Callan Leslie Cameron Guest Star John Caponera Guest Star Michael Crichton Executive Producer John Wells Executive Producer