What do you need to become a doctor?

You need a bachelor's degree (4 or 5 yrs) in any major, but must take pre-med courses which include (2 semesters of inorganic chemistry with labs, 2 semesters of organic chemistry with labs, 2 semesters of physics with labs, 2 semesters of Biology with labs, and some medical schools require a biochemistry course but this varies). Also, one must also take the MCAT (medical college admission test)before being able to apply to medical school. If accepted medical school is a 4 year program (2 yrs of basic sciences and 2 years of clinical clerkships). After graduating from medical school comes residency which varies in duration based on specialty