About the American Osteopathic Association

The AOA is a member association representing more than 64,000 osteopathic physicians (D.O.s). The AOA serves as the primary certifying body for D.O.s, and is the accrediting agency for all osteopathic medical colleges and health care facilities.

The AOA's mission is to advance the philosophy and practice of osteopathic medicine by promoting excellence in education, research, and the delivery of quality, cost-effective healthcare within a distinct, unified profession.

History and Structure
View the history of the AOA—how it was developed and how it has evolved since its founding in 1897. Also get information on the structure of the organization, including biographies on the current staff and leadership. 

Ethics and Policies
The AOA stands firmly behind osteopathic physicians’ ethical and professional responsibilities to patients and the medical profession. We offer an in-depth look at our ethical standards in our official Code of Ethics. Our position papers also outline the AOA’s stance on major health issues affecting all areas of society.