2010 Annual Enrollment Period
For those with a Medicare Advantage plan or a Medicare Part D (prescription) plan, starting on November 15th and going through December 31st you can make a change to your current program which will take effect on Jan 1st, 2010.
This Annual enrollment period does not allow you to make a change to your medicare supplement since those are a different type of insurance policies and do not follow the Annual / Open Enrollment periods set by Medicare for the Advantage and Part D programs.
The reason that the Medicare Advantage and Part D programs have Annual and Open Enrollment periods is because they are a contract between Medicare and private insurers for those benefits and the enrollment periods are set around the fact that the contracts follow the calendar year.
Medicare Supplements are not direct contracts with Medicare and therefore do not follow the Annual / Open enrollment periods that Medicare Advantage and Medicare Part D follow. Medicare Supplements have their own open enrollment periods and guarantee issue periods that may have special options for you depending on what state you live in. Contact an agent for more information.