Open Enrollment 2024 Dates Medicare Supplemental. Important dates to enroll in, switch or cancel a medicare plan for 2025 are: Your medicare supplement open enrollment occurs during the first six months you are enrolled in medicare part b.
The fall medicare open enrollment lasts from october 15 to december 7, though you may be able to make changes to your coverage during other medicare enrollment periods. From october 15 to december 7, review changes in premiums and benefits to ensure your plan meets your needs.