Michael Crichton Creator, Executive Producer, Writer Anthony Edwards Dr. Mark Greene Actor George Clooney Dr. Doug Ross Actor Sherry Stringfield Dr. Susan Lewis Actor Noah Wyle Dr. John Carter Actor Eriq La Salle Dr. Peter Benton Actor Julianna Margulies Head Nurse Carol Hathaway Actor Christine Harnos Actor Kathleen Wilhoite Chloe Lewis Guest Star William H. Macy Actor CCH Pounder Dr. Angela Hicks Guest Star Khandi Alexander Jackie Robbins Guest Star Ming-Na Wen Actor Zachary Browne Jake Leeds Guest Star Andrea Parker Linda Farrell Guest Star Rick Rossovich Dr. John 'Tag' Taglieri Guest Star Yvette Freeman Nurse Haleh Adams Guest Star Beah Richards Mae Benton Guest Star Abraham Benrubi Jerry Markovic Guest Star Lisa Zane Diane Leeds Guest Star Gloria Reuben Jeanie Boulet Guest Star John Wells Executive Producer Rod Holcomb Director Christopher Chulack Producer Neal Baer Executive Producer Dennis Stuart Murphy Producer Paul Manning Producer Jack Orman Executive Producer