District IX, the California chapter of the American College of Obstetricians and Gynecologists (ACOG), welcomes you to our website! ACOG is a membership organization of obstetrician-gynecologists dedicated to the advancement of women's health through education, advocacy, practice, and research. District IX claims more than 4,500 Fellows of the national medical membership of over 40,000 physicians. ACOG represents over 90% of all board certified ob-gyns who provide health care for women. Here you will find a calendar of ACOG events, a roster of our Executive Committee and Advisory Council and other useful information. Please feel free to contact us if you have any questions.