You could wear a plague doctor mask, or you could go all-in with this full body plague doctor inflatable costume. Your doctor wears a black gown with a bird beak mask that drapes over the shoulders. A black top hat and brown "gloves" complete the look.
This is a unique choice for 2020, our pandemic year. Social distancing should be easy with this inflatable costume that comes with a small motorized fan to keep the costume shape. You might be an essential worker but no one wants to hug a plague doctor!