Part D

If I sign up for a Part D plan during the Medicare Open Enrollment period, when will the coverage take effect?

If you enroll in a plan during the Medicare Open Enrollment period that runs from October 15 to December 7 each year, your coverage takes effect on January 1 of the following year.


While we have made every effort to provide accurate information in these FAQs, people should contact the health insurance Marketplace or Medicaid agency in their state for guidance on their specific circumstances.

The Henry J. Kaiser Family Foundation Headquarters: 185 Berry St., Suite 2000, San Francisco, CA 94107 | Phone 650-854-9400
Washington Offices and Barbara Jordan Conference Center: 1330 G Street, NW, Washington, DC 20005 | Phone 202-347-5270 | Email Alerts: | |

Filling the need for trusted information on national health issues, the Kaiser Family Foundation is a nonprofit organization based in San Francisco, California.