TAMPA, Fla. – HealthPlan Holdings, Inc. (HealthPlan), a leading provider of outsourcing solutions to insurers in the individual, small business and union trust markets, announced today that it has acquired GEMGroup. Headquartered in Pittsburgh, GEMGroup specializes in accounting, pension and 401(k) administration software and services to self-funded and Taft-Hartley employee benefit plans for unionized workers.