Sandra Oh (born July 20, ) is an actress from Ottawa, Ontario. She played Cristina Yang in Grey's Anatomy. She has also acted in other TV programs and in. Apr 6, - Sandra Oh is hardly a stranger to television, but it’s been nearly four years since she exited “Grey’s Anatomy” after a year run as the indelible Dr. Cristina Yang. She’s had a few roles since, including a memorable turn on Season 3 of ABC’s “American Crime.