Enrollment
General Enrollment Period (GEP)
Quick answer
The General Enrollment Period runs January 1 – March 31 for people who missed IEP and don't qualify for a SEP. Coverage starts the month after you enroll.
Plain-English definition
GEP is the safety-net window for signing up for Part A or Part B, often with a Late Enrollment Penalty.
Why it matters
GEP prevents you from being permanently locked out of Medicare, but the penalties still apply.
A simple example
You missed your IEP. You enroll in Part B during GEP; coverage starts the following month.
Common mistakes & misconceptions
Related terms
Initial Enrollment Period (IEP)
The Initial Enrollment Period (IEP) is your first chance to enroll in Medicare. It's the 7-month window that starts 3 months before your 65th birthday month and ends 3 months after.
Late Enrollment Penalty
The Late Enrollment Penalty (LEP) is a permanent surcharge added to your Part B or Part D premium if you don't enroll when first eligible and don't have other creditable coverage.
Special Enrollment Period (SEP)
A Special Enrollment Period (SEP) is a window outside the standard windows when you can join, switch, or drop a plan. SEPs are triggered by qualifying life events like moving, losing employer coverage, or becoming eligible for Medicaid.
Frequently asked questions
Does GEP avoid the penalty?+
No — the LEP still applies.
Sources & references
📚 Where this information comes from
- Medicare.gov — official U.S. government site for people with Medicare ↗Primary source for benefits, enrollment periods, and plan comparison.
- CMS.gov — Centers for Medicare & Medicaid Services ↗Federal rulemaking, program updates, and official guidance.
- Social Security Administration — Medicare enrollment & premiums ↗Enrollment, premium withholding, and IRMAA determinations.
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We help compare Medicare Advantage plans from the insurance companies we represent, and we don't offer every plan available in your area.
Medicare Caddies is an independent insurance agency. We are not affiliated with, endorsed by, or connected to the U.S. government, the federal Medicare program, or the Centers for Medicare & Medicaid Services (CMS). We help compare Medicare Advantage plans from the insurance companies we represent, and we don't offer every plan available in your area.