birth_place name yearsactive article_title birth_name occupation
milwaukee , wisconsin , u.s kelly mccreary 2005 -- present kelly mccreary
 kelly j. mccreary actress
kelly mccreary

kelly mccreary is an american actress , best known for her role as dr. maggie pierce , meredith grey 's half-sister , in the abc drama series , `` grey 's anatomy '' .
