Except you don't. You may have excellent doctors but there are countries like Australia, Hungary or even the United Kingdom and Russian whose M.D.'s excel in their areas.
Also if were are going to talk about best hospitals and doctors in general #cubanhealthcaresystem
And if I could name 10 biggest medical discoveries such as MRR, Penicillin, DNA structure, Smallpox, Germ theory, IVF, Insulin, X Ray, Birth control and Anaesthetics, pretty much only one of them includes one american vs at least four british.
Yet, american have brought us a big slice of medical advance, much <3 MRI, but that's what you expect from a country with that much population and resources. Also, we all know who planted the seed on north american soil :D