I know for a fact that many African countries allow US licensed physicians to practice there without much restrictions.
I know Hong Kong allows US licensed physicians to practice there (after they passed the local board exam which may be waived sometimes). The medical degree in HK is a bachelor's level degree and if you count the total number of postsecondary (post high school) years that one has to go thru to be an MD in the US, it is more than 5.