Certified Midwife (CM) vs Certified Nurse-Midwife (CNM): What Is the Difference?

Two Paths to the Same Standard of Care

If you are exploring midwifery care for your pregnancy and birth, you have likely come across two credentials that sound almost identical: CM (Certified Midwife) and CNM (Certified Nurse-Midwife). The similarity in names is not a coincidence. These two types of midwives share the same certifying body, the same certification exam, and the same clinical competencies. The difference lies in how they got there.

Understanding the distinction matters, not because one is better than the other, but because state regulations, insurance coverage, and hospital privileges can differ between the two. Here is a clear breakdown to help you make an informed choice.

The CNM: Certified Nurse-Midwife

The Certified Nurse-Midwife pathway is the older and more widely recognized of the two credentials. CNMs have been practicing in the United States since the 1920s.

Education Pathway

A CNM:

1. Earns a nursing degree (BSN or equivalent) and becomes a registered nurse (RN)

2. Completes a graduate-level midwifery program (master's or doctoral degree) accredited by the Accreditation Commission for Midwifery Education (ACME)

3. Passes the national certification examination administered by the American Midwifery Certification Board (AMCB)

The nursing foundation means CNMs enter midwifery school with clinical experience in patient care, pharmacology, health assessment, and the broader healthcare system.

Where CNMs Can Practice

CNMs are recognized in all 50 states, the District of Columbia, and all U.S. territories. They have prescriptive authority in all states, though the degree of physician oversight or collaboration required varies by state. Some states grant CNMs full practice authority, meaning they can practice independently without physician supervision. Others require a collaborative agreement with a physician.

The CM: Certified Midwife

The Certified Midwife credential was established in 1996 by the American College of Nurse-Midwives (now the American College of Midwives) to create a pathway into midwifery for individuals with non-nursing health science backgrounds. The CM credential represents the same standard of midwifery practice as the CNM, reached through a different educational route.

Education Pathway

A CM:

1. Earns a bachelor's degree in a health-related field (biology, public health, health sciences, etc.) but not necessarily nursing

2. Completes the same ACME-accredited graduate-level midwifery program that CNMs attend

3. Passes the same national certification examination (the AMCB exam) that CNMs take

This is the crucial point: CMs and CNMs take the exact same certification exam and must meet the identical clinical requirements. The midwifery education is the same. The difference is in the prerequisite undergraduate degree.

Where CMs Can Practice

This is where the practical distinction between CMs and CNMs becomes significant. As of 2026, CMs are authorized to practice in approximately 20 states, with several more states actively considering legislation. The states that recognize CMs tend to be concentrated on the East Coast and in states with more progressive midwifery laws. New York was the first state to authorize CM practice and has the longest history of CM integration into the healthcare system.

In states that do not yet recognize the CM credential, a Certified Midwife cannot obtain a license to practice, regardless of their training. This is a regulatory gap, not a competency gap. The American College of Midwives, the American College of Obstetricians and Gynecologists (ACOG), and other major medical organizations support CM practice authority in all states.

Side-by-Side Comparison

What Is the Same

• Midwifery education: Both attend the same ACME-accredited graduate programs
• Certification exam: Both pass the same AMCB certification exam
• Clinical competencies: Both meet identical clinical requirements
• Scope of practice: Both provide the full range of midwifery services, including prenatal care, labor and delivery management, postpartum care, newborn care, gynecological care, and family planning
• Prescriptive authority: Both can prescribe medications (in states where they are authorized to practice)
• Continuing education: Both must meet the same continuing education requirements for recertification
• Ability to attend births in hospitals, birth centers, and homes (depending on state regulations and institutional privileges)

What Is Different

• Undergraduate education: CNMs have a nursing degree; CMs have a non-nursing health science degree
• State recognition: CNMs are recognized in all 50 states; CMs are recognized in approximately 20
• Insurance paneling: Some insurance companies are more familiar with the CNM credential, which can make credentialing smoother. CM credentialing is improving but can still be more challenging in some markets.
• Hospital privileging: In states where CMs are authorized, hospitals generally grant them privileges, but individual hospital systems may have their own policies. In practice, some CMs report that obtaining hospital privileges can require more advocacy than their CNM counterparts face.

The Quality of Care Question

Let's address this directly: the care you receive from a CM and the care you receive from a CNM are clinically equivalent. This is not opinion. It is built into the credentialing structure. The same educational programs, the same exam, the same clinical standards.

Research on midwifery outcomes generally does not separate CM and CNM data because the practice is the same. The substantial body of evidence supporting midwifery care, including lower cesarean rates, fewer interventions, higher patient satisfaction, and equivalent or better outcomes for low-risk pregnancies, applies equally to both credentials.

A landmark 2018 systematic review in The Lancet found that midwife-led care was associated with reduced rates of preterm birth, fewer epidurals, fewer episiotomies, and higher rates of spontaneous vaginal birth, with no difference in adverse outcomes. These findings apply to the midwifery model of care, which both CMs and CNMs practice.

How State Regulations Affect Your Choice

In practical terms, your state determines which credential is available to you:

• If you live in a state that recognizes both CMs and CNMs, you can choose either, and your decision can be based purely on the individual provider's personality, philosophy, location, and availability.
• If you live in a state that recognizes only CNMs, your midwifery care will come from a CNM. This does not limit the quality of care you receive.
• If you are considering a CM and are unsure about your state's regulations, check with your state's board of health or midwifery licensing board. The American College of Midwives also maintains current information about state-by-state CM authorization.

Choosing Between a CM and a CNM

If both credentials are available in your state, here is what actually matters when choosing your midwife:

Focus on the Individual, Not the Letters

Since the training and competencies are the same, the letters after a midwife's name are less important than:

• Their philosophy of care. Does it align with yours? Do they support your birth preferences? How do they approach interventions, pain management, and decision-making?
• Their experience. How many births have they attended? Do they have experience with your specific situation (VBAC, multiples, advanced maternal age, etc.)?
• Their practice setting. Do they practice in a hospital, birth center, or home birth setting? Does that match your preference?
• Their collaborative relationships. Do they have a strong relationship with an OB or maternal-fetal medicine specialist for consultations and referrals? Seamless collaboration is a hallmark of safe midwifery care.
• Your comfort level. Birth is intimate. You need to feel safe, respected, and heard by your provider. Trust your instincts about the relationship.

Ask Questions

Whether you are meeting with a CM or CNM, consider asking:

• What is your approach to informed consent and shared decision-making?
• Under what circumstances would you recommend a transfer of care to an OB?
• What is your cesarean rate? Your intervention rate?
• How do you handle situations where your clinical recommendation differs from the patient's preference?
• What does your on-call coverage look like? Will I always have a midwife I know at my birth?

The Bigger Picture: Expanding Access to Midwifery Care

The CM credential exists to expand the pipeline of midwives in the United States, which faces a significant workforce shortage. By allowing people with non-nursing health science backgrounds to enter midwifery, the CM pathway broadens access to a profession that is demonstrably beneficial for maternal and infant outcomes.

Advocacy for CM recognition in all 50 states is ongoing, and the trend is toward expanded authorization. If you are passionate about midwifery care and live in a state that does not yet recognize CMs, contacting your state legislators to support CM authorization is a meaningful way to expand access for future families.

Finding Your Midwife

Whether you are drawn to a CM or a CNM, the most important thing is finding a midwife whose approach to care resonates with you. Both credentials represent the same rigorous standard of midwifery practice, and both are grounded in the midwifery model of care that prioritizes informed consent, shared decision-making, and the understanding that pregnancy and birth are normal life processes.

You can search for midwives in your area on BAABY, where provider listings include credentials and practice details to help you find the right fit for your family.