It is important to assign a beneficiary on all accounts, especially where there is not currently a designation and there is no joint account owner. Members can also use this opportunity to update any beneficiary information or make changes. For questions regarding assigning a beneficiary to your account or updating your beneficiary information, please call our Member Service Center at (405) 732-0324 ext. 2255, or 1-800-456-4828 ext. 2255.