Compare Medicare Part D Plans 2025 Cost Per Month. Medicare part d plans cost an average of $55.50 per month in 2025, according to government data. It also helps you compare costs among medicare part d and medicare advantage plans available to you.
Find medicare health and drug plans in your area and compare costs. For 2025, the average cost for a basic medicare part d plan is $59 per month, although rates can vary from $0 to $195 per month.