We already know that two hot doctors are joining the cast in season 15, but Luddington hinted that we should expect more additions. And not just surgeons! "Lots of other people coming in and out. In the premiere, you're going to meet some patients that stick around for a while, too. Also, I just have to say we have some crazy medical that ends up happening this season early on. We were in table reads and turning the page, and you think it's just sort of a regular patient moment, and then you're like, 'What?'"