What Type Of Degree Do You Need To Be A Doctor?

That depends on what you mean by doctor and what country you are in.  If you are talking about a clinical medical doctor in the United States, then you need and M.D. Or a D.O., although many foreigners can come and practice after completing their training elsewhere and might have an MB-BS, if they're from India for example.

Generically, anyone who has a doctorate degree of any kind can use the title Dr. And an MB-BS is technically a bachelors degree but are also called Dr.