HMS Holdings makes sure health benefits providers are paying only as much as they have to. Through its Health Management Systems subsidiary, the company specializes in helping providers determine participant eligibility, coordinate benefits, and identify and recover claims that were paid in error or should have been paid by another party. It serves state Medicaid agencies and Children's Health Insurance Programs in some 40 states, as well as federal agencies including Centers for Medicare & Medicaid Services and Veterans Health Administration. The company also provides services to commercial insurers, employer groups, and pharmacy benefits managers.