Midwives certified by the American Midwifery Certification Board (AMCB) are prepared to provide primary care to women from menarche across the lifespan and to well newborns to 28 days using consultation, collaboration, and referral to other providers as needed. The scope of midwifery in the United States did not always include primary care for women, although imprecise definitions of primary care make this difficult to study. The expansion of the scope of practice occurred in response to population needs and research on nurse-midwifery practice patterns. The scope of practice of midwifery is tied to educational standards through the regulation and licensure at the state level. Although the current scope of practice includes primary care for women, many certified nurse-midwives and certified midwives are unable to practice to the full extent of their education due to state-level licensure restrictions. We discuss the addition of primary care to midwifery and the current state of AMCB-certified midwives as primary care providers for women.