When Can You Change Your Medicare Plan? Understanding Open Enrollment Periods

Kena Fleur • October 16, 2025

When Can You Change Your Medicare Plan? Understanding Open Enrollment Periods

Navigating Medicare can be a bit like finding your way through a maze, but knowing when you can switch your Medicare Advantage plan during open enrollment makes all the difference. Here’s a quick rundown on when and how to make changes to your plan.



Key Medicare Enrollment Periods


1. Initial Enrollment Period (IEP)


  • If you’re new to Medicare, this is when you first enroll in Medicare Part D drug plan and choose your Medicare Supplement Plan. You’ll have a 7-month window around your 65th birthday.


2. Annual Open Enrollment (October 15 - December 7)

  • This is your chance to compare Medicare Advantage plans for 2025, switch from Original Medicare to Advantage, or change your Part D plan. Any changes made here start January 1.


3. Medicare Advantage Open Enrollment (January 1 - March 31)


  • Already in an Advantage plan? You can switch to a different Medicare Advantage plan or return to Original Medicare during this time.


How to Make Changes


  • Switching Between Plans: If you want to switch from Original Medicare to Advantage, or vice versa, use the open enrollment period to make that move. This is the best time to adjust your coverage.


  • Medicare Supplement Quotes Online: If you’re looking for new coverage, you can get Medicare supplement quotes online to compare prices and plans for 2025.


  • Help Choosing a Medicare Plan: Not sure what’s right for you? Consider scheduling a Medicare agent phone consultation for expert advice.



Final Thoughts


Medicare enrollment assistance is key, especially when it comes to finding the best Medicare Supplement Plan for seniors. Whether you need to adjust your coverage or just want to explore your options, make sure to compare Medicare plans and understand when changes can happen.

Stethoscope on a red heart-shaped object, resting on a Medicare document.
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