Sarah Chalkes guest appearance in this episode happened because her real life son has Kawasaki disease and after speaking at a fundraising event for the disease a friend suggested doing a medical show to get more awareness so she reached out to Shonda Rhimes who jumped on the idea.
Sarah Chalke says repeatedly she's not a doctor but she played a doctor for 9 years in "Scrubs".
Can't fight this feeling is a song by REO Speedwagon
Sarah Chalke and Katherine Heigl who played Izzy Stevens for six seasons stars in a show together on Netflix called Firefly Lane.