<Tr> <Th> Spouse (s) </Th> <Td> Alex Young (2007--2010) </Td> </Tr> <Tr> <Th> Website </Th> <Td> www.katewalsh.com </Td> </Tr> <P> Kathleen Erin Walsh (born October 13, 1967) is an American actress and businesswoman . Her roles include Dr. Addison Montgomery on the ABC television dramas Grey's Anatomy and Private Practice, Rebecca Wright on the short - lived NBC sitcom Bad Judge, and Olivia Baker on the Netflix drama series 13 Reasons Why . </P> <P> Walsh was born in San Jose, California, the daughter of Angela Walsh . She grew up in a Roman Catholic household in Tucson, Arizona . Her father is Irish, being a native of Navan, County Meath, and her mother is of Italian descent . </P>

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