Kathleen Erin 'Kate' Walsh (born October 13, 1967) is an American film and television actress, currently known for her role as Dr. Addison Montgomery on the ABC dramas Grey's Anatomy and Private Practice. Walsh was born in San Jose, California, the daughter of Angela C. (Bochetto) and Joseph P. Walsh. She grew up in Tucson, Arizona. Her father was Irish, being a native of Navan in County Meath, Ireland, and mother was of Italian descent. Her mother lives in Nevada and Walsh has four older siblings. She has two sisters and two brothers, Sean and Joe, who are film-makers. Walsh graduated from Catalina Magnet High School and later studied at the University of Arizona for a while, where she got involved in regional theater. She now lives in Los Angeles.
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