GEMGroup is a Third Party Aministrator founded in 1932. For the last sixty years, GEMGroup has specialized in providing of ad ... ministrative services to large- and medium-sized benefit plans. GEMGroup has become a recognized leader in a highly demanding and specialized industry. Today, GEMGroup serves over two hundred client benefit plans through our five offices located in Pittsburgh, Pennsylvania; Atlanta, Georgia; Oxon Hill, Maryland; Claymont, Delaware; and Towson, Maryland. Each office is fully staffed and equipped to handle a multitude of benefit plan client services. GEMGroup presently employs approximately one hundred and thirty employees, all exclusively devoted to providing quality administrative services to our benefit plan clients. On a daily basis, our organization has the direct responsibility of administering benefits to over 300,000 participants covered by our client plans, encompassing over four billion dollars in combined assets. read more