Πρωταγωνιστές του κύκλου 9

1. 

   Hugh Laurie

   Gregory House

2. 

   Lisa Edelstein

   Lisa Cuddy

3. 

   Robert Sean Leonard

   James Wilson

4. 

   Omar Epps

   Eric Foreman

5. 

   Jennifer Morrison

   Allison Cameron

6. 

   Jesse Spencer

   Robert Chase

7. 

   Peter Jacobson

   Chris Taub

8. 

   Olivia Wilde

   Thirteen

9. 

   Kal Penn

   Lawrence Kutner

Γκεστ σταρ 9

1. James Ingersoll

   Chris Carrick

2. 

   Aisha Kabia

   Nurse Rita

3. Bobbin Bergstrom

   Nurse

4. 

   Anthony Montgomery

   James Carlton

5. 

   Lori Petty

   Janice Burke

6. 

   Sarah Danielle Madison

   Lynne

7. 

   Alex Fernandez

   Fernando

8. 

   Martin Henderson

   Jeff

9. 

   Jake Cherry

   Zach

Συντελεστές 7