What college degree is required for an anesthesiologist?

After getting an undergraduate degree (BS) usually in a life science like Biology or Chemistry - an anesthesiologist student will get a Doctor of Medicine degree (MD) - next is a four year (or more) residency/intern program in anesthesia. Many anesthesiologists are also taking specialty programs in pain management.
After all those years of school, an anesthesiologist will take their 'state boards', exams to be board certified before starting their medical practice.