Main Characters Dr. Christopher Duncan Turk 179 main appearances Dr. Percival "Perry" Ulysses Cox 179 main appearances Dr. John "J.D." Dorian 174 main appearances Dr. Robert "Bob" Kelso 165 main appearances Dr. Elliot Reid 167 main appearances Janitor 142 main appearances Nurse Carla Espinosa 166 main appearances Dr. Denise "Jo" Mahoney 13 main appearances Lucy Bennett 13 main appearances Drew Suffin 13 main appearances Cole Aaronson 13 main appearances
Recurring Guest Characters Dr. Greenberg 1 guest appearances Mother 1 guest appearances Patient 1 guest appearances Nick 1 guest appearances Darryl 1 guest appearances Anchorwoman 1 guest appearances Teacher 1 guest appearances Bartender 1 guest appearances Patricia 1 guest appearances Dr. Benson 1 guest appearances Jennifer 1 guest appearances Patient #1 1 guest appearances Patient 1 guest appearances Meredith 1 guest appearances Mrs. Wheeler 1 guest appearances Mr. Wheeler 1 guest appearances Al 1 guest appearances Narrator / Doctor 1 guest appearances Carrot Top 1 guest appearances Paul 1 guest appearances ⇤ « 8 9 10 11 12 13 14 15 16 17 » ⇥