CNMs are registered nurses with graduate education in midwifery. They have graduated from a nurse-midwifery education program accredited by the Accreditation Commission for Midwifery Education (ACME). This education includes a university degree as well as hands-on clinical training by practicing CNMs. They also have passed the national certification exam of the American Midwifery Certification Board (AMCB). CNMs provide general women's health care throughout a woman's lifespan. These services include general health check-ups and physical exams; pregnancy, birth, and postpartum care; well woman gynecologic care; and treatment of sexually transmitted infections. CNMs are able to prescribe a full range of substances, medications, and treatments, including pain control medications. CNMs work in many different settings, such as hospitals, health centers, private practices, birth centers, and homes. Most midwives in the United States are CNMs.