Medicare Prescription Drug Coverage Summary Part D is the name of Medicare’s prescription drug coverage. It’s insurance that helps people pay for prescription drugs. It is available to everyone who has Medicare. It provides protection if you pay high drug costs or have unexpected prescription drug bills. It doesn’t cover all costs. You have to pay part of the cost of prescription drugs. Most people also have to pay an additional monthly cost. Private companies provide Medicare prescription drug coverage. You choose the drug plan you like best. Whether or not you should sign up depends on how good your current coverage is. You need to sign up as soon as you are eligible for Medicare. Otherwise, there may be additional charges. Centers for Medicare and Medicaid Services Find an Expert Centers for Medicare & Medicaid Services Centers for Medicare & Medicaid Services Find and Compare Doctors, Plans, Hospitals, Suppliers and Other Providers Centers for Medicare & Medicaid Services Medicare Centers for Medicare & Medicaid Services Clinical Trials ClinicalTrials.gov: Medicare Part D National Institutes of Health Related Issues Closing the Prescription Drug Coverage Gap Centers for Medicare & Medicaid Services Drug Plan Coverage Rules Centers for Medicare & Medicaid Services How Medicare Prescription Drug Coverage Works with a Medicare Advantage Plan or Medicare Cost Plan Centers for Medicare & Medicaid Services Medicare Part D: Things People with Cancer May Want to Know American Cancer Society Start Here Drug Coverage (Part D) Centers for Medicare & Medicaid Services How Medicare Prescription Drug Plans & Medicare Advantage Plans with Prescription Drug Coverage (MA-PDs) Use Pharmacies, Formularies, & Common Coverage Rules Centers for Medicare & Medicaid Services Understanding Medicare Prescription Drug Coverage American Academy of Family Physicians Your Guide to Medicare Prescription Drug Coverage Centers for Medicare & Medicaid Services Journal Articles Medicare Prescription Drug Coverage