Alex Landi has teased his return for the 20th season of "Grey's Anatomy." Back in the scrubs: Landi, 31, posted a photo on Instagram on Jan. 10 that shows himself all scrubbed up while wearing his character's – Dr. Nico Kim – Grey + Sloan Memorial Hospital ID card. While he did not reveal much about his comeback, the “Walker” star wrote “Season 20” in the description in all caps.