Medicare Part D is an optional prescription drug coverage available to Medicare beneficiaries. Those who enroll in Medicare Part D must pay a monthly insurance premium, an annual deductible and coinsurance costs. Individuals who are enrolled in Medicaid and Medicare are automatically enrolled into a Medicare prescription drug plan and receive the majority of their prescriptions through this plan.
Some low-income Medicare beneficiaries qualify for extra help from the federal government covering their premiums, deductible and coinsurance costs, or a portion thereof. Individuals who qualify for extra help are, however, responsible for prescription copayments.