Ellen Pompeo Dr. Meredith Grey Actor Patrick Dempsey Dr. Derek Shepherd Actor Sandra Oh Dr. Cristina Yang Actor Isaiah Washington Dr. Preston Burke Actor Katherine Heigl Dr. Izzie Stevens Actor Justin Chambers Dr. Alex Karev Actor T.R. Knight Dr. George O'Malley Actor Chandra Wilson Dr. Miranda Bailey Actor James Pickens Jr. Dr. Richard Webber Actor Kate Walsh Dr. Addison Montgomery Actor Sara Ramirez Dr. Callie Torres Actor Eric Dane Dr. Mark Sloan Actor George Dzundza Guest Star Jeff Perry Guest Star Debra Monk Guest Star Greg Pitts Guest Star Tim Griffin Guest Star Mae Whitman Guest Star Judith Hoag Guest Star Steven W. Bailey Guest Star Patricia Bethune Guest Star Moe Irvin Guest Star Shonda Rhimes Executive Producer Mark Gordon Executive Producer Betsy Beers Executive Producer James D. Parriott Executive Producer Krista Vernoff Writer Greg Yaitanes Director