The American Osteopathic Association (AOA) represents more than 197,000 osteopathic physicians (DOs) and osteopathic medical students; promotes public health; encourages and funds scientific research; serves as the primary certifying body for DOs; and is the accrediting agency for colleges of osteopathic medicine. To learn more about DOs and the osteopathic philosophy of medicine, visit www.osteopathic.org.