Understanding Medicare Enrollment Periods

Jojo Wallace | Oct 29 2025 17:45

Medicare enrollment can be complex, but knowing the key enrollment periods can help you make informed decisions about your healthcare coverage. Here's a breakdown of the primary enrollment periods, along with practical examples to help you understand when changes can be made.

1. Initial Enrollment Period (IEP)

The IEP is your first opportunity to sign up for Medicare. It starts three months before your 65th birthday, includes the month you turn 65, and ends three months after. During this time, you can enroll in Medicare Part A and Part B. For instance, if your birthday is in April, your IEP begins in January and ends in July.

2. General Enrollment Period (GEP)

If you missed your IEP, you can enroll during the GEP, which runs annually from January 1st to March 31st. However, enrolling during this period may result in late enrollment penalties. Coverage starts on July 1st.

3. Annual Enrollment Period (AEP)

From October 15th to December 7th each year, the AEP allows you to make changes to your Medicare Advantage Plans (Part C) and Medicare Prescription Drug Plans (Part D). For example, you can switch from Original Medicare to a Medicare Advantage Plan or change your Part D plan during this time.

4. Special Enrollment Periods (SEP)

SEPs are triggered by specific life events, such as moving to a new area or losing other health coverage. These periods allow you to sign up for Part B without penalty if you were covered under a group health plan when you turned 65.

5. Medicare Advantage Open Enrollment Period

From January 1st to March 31st, those already enrolled in a Medicare Advantage Plan can switch to another Advantage Plan or return to Original Medicare. For example, you might choose to try a different plan if your current one doesn't meet your health needs.

Understanding these enrollment periods ensures you're covered when you need it. If you have specific questions or need assistance with your Medicare options, feel free to contact us for personalized support.