Anthony Edwards Dr. Mark Greene Actor Eriq La Salle Dr. Peter Benton Actor Noah Wyle Dr. John Carter Actor Laura Innes Dr. Kerry Weaver Actor Alex Kingston Dr. Elizabeth Corday Actor Goran Visnjic Dr. Luka Kovac Actor Maura Tierney Abby Lockhart Actor Paul McCrane Robert Romano Actor Michael Michele Cleo Finch Actor Erik Palladino Dave Malucci Actor Ming-Na Wen Actor George Plimpton John Truman Carter, Sr. Guest Star James Cromwell Bishop Stewart Guest Star John Peck Nick Stevens Guest Star Robert Beitzel Jeff Guest Star Yvette Freeman Nurse Haleh Adams Guest Star Mark Valley Richard Lockhart Guest Star Laura Cerón Nurse Chuny Marquez Guest Star Lily Mariye Nurse Lily Jarvik Guest Star Kristin Minter Randi Fronczak Guest Star Noah Blake Sean Guest Star John Wells Executive Producer Michael Crichton Executive Producer Neal Baer Executive Producer Jack Orman Executive Producer