Medicare Advantage plans can change their coverage and premium costs once each year. They are required to send an Annual Notice of Change (ANOC) each year by September 30th. In addition to the possibility of the Medicare Advantage premium changing, your Medicare Parts A and B premiums will likely go up a small amount each year. To find the current year’s Part A and B premiums, you can visit Medicare’s website. If you do not approve of changes that are happening to your Medicare Advantage plan, you will typically have an opportunity to change plans. However, it’s not possible to change your Part B premium requirements unless you qualify for one of the MSP options discussed above.