Many doctors become certified in a specialty by completing special training and passing formal examinations. To find out if your MD is board-certified, access the American Board of Medical Specialties Web site at www.abms.org or call 1-866-275-2267. Patients who would like to check the certification status of a DO can visit the American Osteopathic Association (AOA) Web site at www.osteopathic.org or call the Member Service Center at 1-800-621-1773, option 1 on the menu.