Zebbie Grant-Warren is Manager, Membership, with responsibility for providing quality membership customer service and general membership support. Prior to joining NMHC, Zebbie was Membership Coordinator at the Endocrine Society. She has over 17 years of membership experience and has received an award from the 89th Flight Operations (Air Force One) for outstanding customer service. Zebbie also serves on the Board for the nonprofit organizations, Women of Action Maryland and Charles County Department of Social Services Advisory.