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In a nutshell: As the agency responsible for administering Oregon's Medicaid program (known as the Oregon Health Plan or OHP), OHA receives and generates large amounts of data about Medicaid enrollees, and health care services that were paid by Medicaid. These data are collected and stored in a database called the Medicaid Management Information System, or MMIS. Data collected in MMIS (which are sometimes collectively called “Medicaid administrative data") are used by researchers and policymakers to monitor, report on, and improve Oregon's Medicaid delivery system. MMIS data is usually accessed through the DSSURS warehouse.
Visit the Medicaid data webpage.