Do you need a masters and degree to be doctor?

To become a medical doctor (M.D. or D.O.), you need a medical degree, which is a postgraduate degree. You don't need a Master's degree *before* medical school, although some people may choose to pursue one. A bachelor's degree is the prerequisite for applying to medical school. So the answer is: you need a medical degree (M.D. or D.O.), which follows a bachelor's degree.