Your AAFMAA Membership number (or customer number) is written on your membership card. It is also the first 4-6 numbers of your insurance policy. If you need assistance, please call us toll-free at 1-800-336-4538, weekdays from 8:30am to 5:30pm, ET. Or, speak with an AAFMAA Membership Coordinator toll-free at 1-877-398-2263 between 5:30pm and 7:00pm, ET.