Casey is a fictional character portrayed by Mason Cook in the TV series Grey's Anatomy.
In the first episode they appeared in, titled New History (season 6), they were 9 years old.
They appear in 1 episodes out of a total of 430 aired so far
Casey is also portrayed by Casey Sander.
Episodes1
New History
episode S6.E9 november 2009When Owen recruits his fellow Iraqi War vet, Dr. Teddy Altman, as the new cardiothoracic surgeon, Cristina questions Teddy's abilities in the OR and the nature of their past relationship. Meanwhile Izzie returns to Seattle Grace with her high school mentor seeking treatment for his dementia, and the stress of Richard's responsibilities, post-merger, are taking their toll.