ACNM is the professional association that represents Certified Nurse-Midwives (CNMs) and Certified Midwives (CMs) in the United States. 

Certified Nurse-Midwife (CNM)

CNMs are trained in both nursing and midwifery. CNMs are Advanced Practice Nurses and have a Master’s degree from a university-affiliated Nurse-Midwifery program. CNMs can practice in all birth settings and provide prenatal, birth, and postpartum care. Outside of the childbearing year, CNMs also provide well-woman care throughout the life cycle.

Certified Midwife

The Certified Midwife (CM) is a credential from the ACNM that does not require a nursing degree, but is otherwise similar to the CNM credential. The CM credential is legally recognized in these states: New YorkNew Jersey,Rhode IslandDelawareMaine and Missouri. Currently, CMs are not credentialed in Oregon.

Certified Professional Midwife (CPM)

The CPM is a North American credential that recognizes multiple routes of education. CPMs have met clinical requirements and passed skills evaluation and a written exam. CPMs provide prenatal, birth, postpartum, and well-woman care. CPMs are required to have Out-of-Hospital birth experience for certification as a CPM.

More on midwifery licensure and educational pathways can be found here:

Midwifery licensure and educational pathways