Welcome to Scamwarners and you have a sensible and level headed attitude Tara and I regret to tell you that your concerns are valid.
Oxford University isn't a medical college and it's not the place anyone would go to become qualified as a surgeon. Certainly it's one of the UK's most prestigious universities, and that's why he's chosen to use the name, but it has no function in the training of a surgeon. From the university's own website
Today, the Pre-clinical and Clinical Medicine courses at Oxford provide a well rounded intellectual training with particular emphasis on the basic science research that underpins medicine.
It deals in theory and research and not hands on surgery for which you'd go to what we term a University Hospital - one of which I attended today as an out-patient.
Anyone owning a Bugatti Veyron doesn't need to cadge money off people from the internet. If you have that kind of money, you ring the bank president at home and tell him what you want. It's all a fairy tale by a scammer wanting to steal money from you. Why offer to pay you back more than you lend him ? That's the standard basis of 419 scammers - that giving him money will earn you more in the long run - only he's lying.
I can find no trace of such an address existing in Atlanta or anywhere else, nor the person named in Atlanta.