A doctor from Nepal must have some guddi inside to be practising in the US. Further more when it comes to medicine, experience does matter. Very likely the Nepali has had a good experience treating Nepalis back home. Any way he probably knows what we Nepali suffer most from. You can be pretty frank with Nepali doctors vs others. Without knowing the background (i.e. if everything is as unknown as it is to me in this case) I'd go for the gorkhe.