BokHee, the longest-lasting supporting character on Grey's Anatomy, is played by an actual scrub nurse who certainly takes her role seriously. Actor Kathy C. An, also known as BokHee An, portrayed BokHee on both Grey's Anatomy and its six-season spinoff Private Practice. She has garnered a massive following among Grey's Anatomy fans and for good reason -- she is undeniably one of the most dedicated actors on the show.