Maybe I'm biased towards doctors in bigger/richer cities, but when I'm looking for investors, my first stop is doctors. Even the loans of a few hundred thousand are no problem for them to slay, especially since many get married to other similar high earners.
I don't know the most reliable sites for stating pay for doctors, but in my experience these numbers are accurate:
I would not put much stock into those numbers - for example, they are not even remotely close to who makes the highest - those are going to be neurosurgeons who start at over $250k and within a few years make close to a million - those numbers however should not be used for anything meaningful as there are so few of them.