Perhaps there is another twist on this doctors graduation party ideas. I like the idea of a more scary themne with lots of fake blood. Rather than a sanitised, clean medical presentation, what about a messy party.
Buy lots of fake blood, bandages, skeletons and equipment.
Cover it all in fake blood, including the doctors, patients, equipment, and walls.
Have low lighting and candles.
Make the doctors and patients up using face paints to look like they are pretty mad.