More than half of U.S. states and territories surveyed by the Government Accountability Office from February to May said it was hard to find sufficient dentists, primary care doctors, specialists or other health care providers for Medicaid patients. Among Medicaid officials for the states, five territories and Washington, D.C., 30 said it was a challenge ensuring enough dentists were participating in Medicaid, and 17 said the same for primary care providers. The GAO reported low Medicaid payment and a shortage of providers as main factors affecting provider participation.