How Do I Fix a Medicare Part D Late Penalty?

If you’ve received a notice about a Medicare Part D late enrollment penalty (LEP), don’t panic. This is a common issue many people face when transitioning to Medicare, especially after age 65. Understanding how the penalty works and the steps to take can help you get back on track.
What Is a Medicare Part D Late Penalty?
The Part D late enrollment penalty is a fee added to your monthly prescription drug plan premium if you go more than 63 days without creditable prescription drug coverage after becoming eligible for Medicare. Creditable coverage means your previous drug plan met Medicare’s minimum requirements. If Medicare determines your past coverage didn’t qualify, you may be hit with the penalty.
Why Am I Being Penalized?
Here are the most common reasons for receiving a Part D late penalty notice:
- Your prior prescription drug plan wasn’t creditable.
- This means the plan didn’t meet Medicare’s coverage standards.
- You didn’t verify your plan’s creditable status.
- Medicare may ask you to confirm your past coverage, and if you can’t, the penalty may apply.
- You delayed enrolling in a Medicare prescription drug plan.
- If you didn’t sign up for Part D when first eligible and didn’t have creditable coverage, the clock on the penalty started ticking.

Steps to Fix a Late Penalty
If you’ve received a penalty notice, follow these steps to address the issue and potentially have the penalty waived or reduced:
1. Gather Proof of Creditable Coverage
The first thing you need is documentation that shows your previous prescription drug plan met Medicare’s standards. Creditable coverage is defined as:
- Having a deductible below Medicare’s annual maximum (e.g., $590 in 2025).
- Offering unlimited coverage for prescription drugs without caps or limits.
Contact your former employer, insurance provider, or union to request a letter or document proving the plan was creditable.
2. Submit Documentation to Your Medicare Part D Plan
Once you have the proof, send it to your current Part D plan as soon as possible. Failure to do this may result in the penalty sticking.
3. Check CMS Rules for Special Circumstances
Medicare may waive the penalty if special circumstances prevented you from enrolling or maintaining creditable coverage. Examples include:
- Misunderstanding Medicare rules.
- Receiving incorrect or incomplete information from your employer or Medicare.
If you believe special circumstances apply to you, contact Medicare directly or work with your Part D provider to file an appeal.

What Doesn’t Count as Creditable Coverage?
Not all drug plans meet Medicare’s minimum requirements, even if they cover prescriptions. The following do not count as creditable coverage:
- Retail pharmacy discount programs like Amazon Pharmacy, Walmart, or GoodRx.
- Insurance plans with coverage caps or high deductibles that don’t meet Medicare standards.
Relying on these plans could lead to a penalty.
Can the Penalty Be Appealed?
Yes, you can appeal the penalty if you believe it’s incorrect. To do so:
- Request a reconsideration form from your Part D plan or Medicare.
- Complete the form and provide supporting evidence, like proof of creditable coverage.
- Submit your appeal by the deadline listed on the penalty notice.
Medicare will review your case and notify you of their decision. If approved, the penalty may be removed or adjusted.

How to Avoid a Part D Penalty
Preventing a penalty is all about planning ahead. Here’s how to avoid problems:
- Enroll in a Medicare drug plan as soon as you’re eligible, or ensure you have creditable coverage through an employer, union, or the VA.
- Keep records of any prescription drug coverage you had before Medicare.
- Double-check with your plan each year to confirm it meets Medicare’s creditable coverage requirements.
Final Thoughts
With Medicare, what you don’t know will hurt you—but with the right steps, you can fix a late penalty and move forward.
Photos: Hiroshi Watanabe, Getty Images
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Originally published March 14, 2025









