The worst thing you can do is not show up when you're scheduled to work. Remember that it's important to be a young professional, especially if you're going into a career in podiatry/medicine. How would you like it if you owned your own practice and an employee you counted on just decided not to show up? You should have given a two week notice last week, and made it clear when they were hiring you that you were only working there temporarily.
As natorx stated, try writing a letter and giving it to your boss in an in-person meeting so you can discuss the situation like adults. You never know where you will end up working or who you will be working with. Don't let this come back and bite you in the bum later 😉.