What university in the english speaking and developed countries would give me entrance to Medical school?

I have double degree in Law and Chemistry from New Zealand University. I want to become a CEO at a hospital in the future. What are the possibilities?

If you really want to be CEO or something like that then You should check you some good premier universities. Oxford accepts double degree students in almost every discipline.
I would recommend, any of Oxford or Cambridge!
Other wise check out; UPenn in USA.
better luck.