Membership Management Services, Inc. (MMSI) provides a wide spectrum of services to meet the individual needs of professional societies, trade associations, and business groups. Whether you need full management services or a complement to your existing staff, MMSI will provide expertise and administration that enables you to grow and retain your membership and develop new revenue sources to enhance your program objectives. We offer a variety of services that will be customized to meet your specific needs and financial requirements and enable you to fulfill your mission.