Medicaid beneficiaries are individuals who qualify for and receive healthcare coverage through the Medicaid program, which is a joint federal and state program that provides healthcare coverage for low-income individuals, families, and people with certain disabilities. These beneficiaries may receive coverage for a range of healthcare services, including doctor's visits, hospital stays, prescription medications, and other necessary treatments. Research in this area often focuses on understanding the health outcomes, access to care, and health disparities experienced by Medicaid beneficiaries, as well as evaluating the effectiveness of different policies and programs designed to support their healthcare needs.