Bruening will play Matt, a paramedic at Seattle Grace. Rumor has it he's a love interest for one of the Seattle Grace docs, but who he's romancing is being kept under wraps.
Matt will first appear in late January/early February.
Bruening's casting follows that of Neve Campbell, who will play Derek's sister Lizzie Shepherd, and Constance Zimmer as a new doctor at Seattle Grace.
Bruening was most recently seen as Chef Jeff in SWITCHED AT BIRTH.