Welcome to Healing Well!
If you're willing to come to the USA for the surgery, I would suggest you look at the large centers, like Mayo Clinic, Johns Hopkins, or Cleveland Clinic, etc.
Another member here raves about
the Cleveland Clinic (in Cleveland, Ohio). She received outstanding care from Dr. Rice and his staff at CC. my.clevelandclinic.org/staff_directory/staff_display.aspx?doctorid=718
I have no experience at CC, but highly value the opinions of the member who recommended it.