CinemaBlend Copy to clipboard Spoiler alert! The following story contains spoilers for the Greyâs Anatomy Season 17 episode âTradition.â Stop reading if you havenât watched it yet! Greyâs in its 17th season. Dr. Tom Koracick will be leaving Grey-Sloan to join Jackson Avery at the Catherine Fox Foundation in Boston. Koracick, played by Greg Germann, first came to Greyâs in Season 14 as a recurring character who operated on Amelia when she had a brain tumor. He was upgraded to a series regular in Season 16. Koracick's exit comes on the heels of a tough battle with COVID, as he caught up with Jackson in the hospital parking lot and desperately asked if there was a place for him in Boston. He said that while he fought COVID, he lost six roommates, and none of them were white. When he heard the work that Jackson was going to do, he was inspired and told Jackson he wanted to be a part of it: