GEMGroup, founded in 1932 and headquartered in Pittsburgh, was formerly known as Weaver Associates. It is a multidimensional service company that specializes in providing administrative services to large- and medium-sized employee benefit plans. The company is an independently owned and operated third-party administrator, and serves more than 200 client benefit plans. GEMGroup has various offices located in Pittsburgh, Oxon Hill and Towson, Md., and Claymont, Del. The company s various offices are fully staffed and equipped to handle a wide variety of benefit plan client services. It has more than of 100 employees who administer over 85,000 members covered by its client plans.