Jessica Brooke Capshaw (born August 9, 1976) is an American actress. She is known for her role as Jamie Stringer in The Practice and Dr. Arizona Robbins on the ABC medical drama Grey's Anatomy. She was introduced in the latter show's fifth season as an attending surgeon and the new head of pediatric surgery. Originally contracted to appear in three episodes, Capshaw's contract was extended to the remainder of the fifth season, with her becoming a series regular in the sixth season.