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 Yvonne Zima Guest Star Bruce Nozick Craig Simon Guest Star Gloria LeRoy Beth Lang Guest Star Eamonn Roche Mr. Lang Guest Star Tia Texada Gloria Lopez Guest Star Kirsten Dunst Charlie Chiemingo Guest Star Christine Harnos Jennifer Simon Guest Star Rose Gregorio Helen Hathaway Guest Star Yvette Freeman Guest Star Michael Crichton Executive Producer John Wells Executive Producer