title: What you need to know about Medicare Part D.
mesh_terms: D017047:Cost Sharing; D003365:Costs and Cost Analysis; D003669:Deductibles and Coinsurance; D005569:Formularies as Topic; D006279:Health Maintenance Organizations / Q000191:economics*; D006801:Humans; D007356:Insurance, Pharmaceutical Services / Q000191:economics*; D006278:Medicare / Q000191:economics*; D014481:United States