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 James Farentino Ray Ross Guest Star Ron Eldard Guest Star Carlos Gomez Paramedic Raul Melendez Guest Star Kathleen Wilhoite Guest Star Scott Michael Campbell Guest Star Mary Pat Gleason Adoption Caseworker Anne Parks Guest Star John Christian Graas Max Nielsen Guest Star Dan Martin Lieutenant Guest Star Deezer D Nurse Malik McGrath Guest Star Michael Crichton Executive Producer John Wells Executive Producer