There are different types of midwives. CNM = Certified Nurse Midwife, which go into the midwifery program with a Bachelors of Science in Nursing as RN's and then become certified, by The American College of Nurse Midwives. All of the CNM's I know have their Master's. CNM's have the largest scope of practice and can offer the most services compared to the other types of midwives. There are Certified Professional Midwives (meets standards of the North American Registry of Midwives), Direct Entry Midwife (as mentioned above), is trained independently as a midwife through either apprenticeship, midwifery school, or college. There are also Certified Midwives and Lay Midwives.
As CP said, I would contact the Alaska BON for sure to find out more information. It all depends on where you work/live of course.