Hi,

Well once you are done with your mbbs studies, you can go for usmle exam which ocuurs in three stages. Two levels in your own country and then for the third level exam you need to travel US. In US the degree mbbs or ms is not there. There is just MD which is a four year program after undergraduate studies. And once you are done with that you look for residency where you further select your specialisation.

I hope this answer helps.

All the best.