Does COBRA Protect You from Part B and Part D Penalties?

Pennsylvania

 Residents:

This guide answers the most common questions people as when choosing a Medicare Advantage plan. Below, you'll find every topic covered, with links to simple, plain-English, answers for each.

Last Updated:
May 9, 2026
Older man with shingles but luckily insured with medicare with gray hair and beard sitting on the beach, shielding his eyes and gazing at the ocean waves.

If you recently left your job and chose to continue your employer’s health coverage through COBRA but skipped signing up for Medicare Parts B and D, you might be concerned about penalties. Here’s what you need to know.

What is COBRA?

COBRA stands for Consolidated Omnibus Budget Reconciliation Act. It allows employees who leave their job to keep the same health insurance coverage they had through their employer for a limited time—usually up to 18 months. While this can be helpful in maintaining continuous coverage, it does not protect you from Medicare penalties if you delay enrolling.

Understanding Medicare Part B and Part D

Medicare has different parts that cover various aspects of healthcare:

Part A covers hospital stays.

Part B covers doctors' visits and outpatient care.

Part D covers prescription drugs.

If you miss the initial enrollment period for Parts B or D, which typically starts three months before your 65th birthday and ends three months after, you may face late-enrollment penalties. These penalties can be significant and last as long as you have Part B or Part D coverage.

How COBRA Interacts with Medicare Penalties

When you choose COBRA, it does not shield you from Medicare penalties for delaying enrollment in Parts B and D. If you are eligible for Medicare (usually at age 65) but delay signing up beyond the initial enrollment period because you have COBRA coverage, you may still incur penalties.

For Part B:

The penalty is a monthly premium increase of about 10% for every year you could have had Medicare but didn’t.

For Part D:

The penalty is a fixed amount added to your monthly premium for each month you delay enrollment beyond the initial period.

Steps to Avoid Penalties

To avoid these penalties, it’s important to sign up for Medicare Parts B and D during your Initial Enrollment Period (IEP). Here are some steps you can take:

1. Check Your Eligibility: You become eligible for Medicare when you turn 65 or if you have a disability. 2. Review Coverage Options: Make sure you understand what Part A, Part B, and Part D cover and how they complement your COBRA coverage. 3. Sign Up on Time: Don’t wait until the last minute to sign up for Medicare Parts B and D. Your IEP starts three months before the month of your 65th birthday and lasts through the third month after that date. 4. Consider Special Enrollment Periods (SEPs): If you lose COBRA coverage, you may qualify for a SEP to enroll in Medicare without penalties. However, this is not guaranteed and depends on specific circumstances.

Conclusion

COBRA can be helpful in maintaining health insurance continuity when leaving employment, but it does not protect you from Medicare penalties if you delay enrolling in Parts B and D. To avoid these penalties, make sure to sign up for Medicare during your Initial Enrollment Period or take advantage of any Special Enrollment Periods that might apply to you.

Not affiliated with or endorsed by the federal Medicare program or any government agency.

Get personalized help choosing a Medicare plan

Peter Abilla is a licensed Medicare agent. No pressure, no cost — just clarity on your options.

Independent agent. Not affiliated with any carrier.
Elderly woman with white hair in a bun, sitting on a beige chair, reading a book indoors.

Questions Covered in This Guide

How This Applies to 

Pennsylvania

 Residents

Medicare Part B covers most outpatient cardiology services including EKGs, echocardiograms, and specialist consultations. Medicare Advantage plans cover the same services but with different copay structures.

Older man with gray hair explains medicare insurance to young girl standing on the beach, both pointing towards something in the distance.Elderly couple rejoice in their medical coverage wearing sunglasses dancing outdoors on a sunny day with a coastal landscape in the background.Smiling mature man forgets his medicare insurance id and woman high-fiving while sitting on a couch in a bright living room.