Common Medicare Mistakes Postal Retirees Keep Making With Their Health Coverage

Missy E
November 14, 2025

Key Takeaways

Overlooking critical enrollment periods can lead to lifelong penalties or loss of coverage for postal retirees.
Proper coordination between Medicare and PSHB plans in 2025 is essential to avoid unnecessary costs and coverage gaps.

Why Postal Retirees Face Unique Medicare Challenges in 2025

As a postal retiree, you now have to coordinate Medicare with the new Postal Service Health Benefits (PSHB) Program that launched in 2025. The transition from FEHB to PSHB

has introduced new requirements and timelines that must be carefully followed. Many retirees assume their old strategies will still work, but the reality is very different.

Understanding the most common mistakes can help you protect your health coverage and your finances.

1. Missing the Medicare Part B Enrollment Requirement

For the first time, many postal retirees are required to enroll in Medicare Part B to maintain their PSHB coverage. If you turned 64 before January 1, 2025, you may be exempt. However, most Medicare-eligible postal retirees must enroll in Part B.

Deadline: Enroll in Medicare Part B during your Initial Enrollment Period (IEP) starting three months before your 65th birthday and ending three months after.
Penalty: If you miss the IEP, you may have to wait until the General Enrollment Period (January 1 to March 31 each year) and pay a lifelong late enrollment penalty.

Failing to meet this requirement can cause you to lose your PSHB coverage entirely.

2. Assuming PSHB Automatically Covers Prescription Drugs Without Medicare

In 2025, PSHB plans integrate prescription drug coverage with Medicare Part D through an Employer Group Waiver Plan (EGWP). However, if you opt out of Medicare Part B, you may also lose this integrated drug coverage.

Drug Costs: Without EGWP coverage, you might have to pay higher drug costs or find a separate Part D plan.
Restrictions: Re-enrolling after opting out is not automatic and can be limited to special enrollment periods.

Always verify that you are enrolled in both Medicare Part A and Part B to ensure you get full PSHB benefits, including prescription drug coverage.

3. Believing FEHB Rules Still Apply

Under the old FEHB system, coordination with Medicare was optional for most retirees. That is no longer true under PSHB.

Key Change: PSHB plans expect Medicare to pay first, and the PSHB plan acts as secondary coverage.
Impact: If you are not enrolled in Medicare Part B, your out-of-pocket costs under PSHB could be much higher.

Assuming you can “keep doing what you did under FEHB” is a costly error in 2025.

4. Underestimating the Costs of Not Enrolling in Medicare Part B

Some postal retirees resist enrolling in Medicare Part B due to the monthly premium, which is $185 in 2025. However, refusing Part B could expose you to much larger expenses later.

Higher Copays and Coinsurance: Without Part B, your PSHB plan may only cover a small portion of certain services.
Hospital and Doctor Bills: Out-of-pocket costs could rise sharply, especially for specialist care and hospital stays.

While Part B premiums add a new expense, the protection they provide against catastrophic costs is crucial.

5. Confusing the Medicare Enrollment Periods

Medicare enrollment windows are very specific, and misunderstanding them can result in penalties or loss of coverage.

Initial Enrollment Period (IEP): 7 months around your 65th birthday (3 months before, the month of, 3 months after).
General Enrollment Period (GEP): January 1 to March 31 annually, with coverage starting July 1.
Special Enrollment Period (SEP): Available if you lose employer coverage.

Postal retirees must act during the correct period or face delays and penalties.

6. Not Reviewing Your PSHB Plan Options During Open Season

From November to December each year, you have the chance to review your PSHB options. Some postal retirees mistakenly believe “one size fits all,” but plans vary significantly.

Premiums and Coverage: Differences in copayments, deductibles, and network providers.
Medicare Coordination: Some plans offer better benefits if you are enrolled in both Medicare A and B.

Review your options carefully every year to ensure your plan still meets your health and financial needs.

7. Ignoring the Mid-Year Notifications About Benefits

Starting in 2025, Medicare Advantage enrollees (which some PSHB plans resemble) will receive a Mid-Year Enrollee Notification about unused benefits.

Timing: Between June 30 and July 31.
Purpose: Remind you of preventive services and supplemental benefits you may not have used.

Ignoring these notices could mean missing out on valuable healthcare services you have already paid for.

8. Not Accounting for the $2,000 Out-of-Pocket Prescription Cap

In 2025, Medicare Part D includes a $2,000 out-of-pocket cap on prescription drugs. This change is a major financial protection.

Catastrophic Phase: After $2,000 in spending, your PSHB plan covers 100% of covered drug costs.
Important: This only applies if you are enrolled in Medicare through your PSHB plan.

Failing to take advantage of this new cap can lead to unnecessary out-of-pocket expenses.

9. Assuming Spousal Coverage Rules Have Not Changed

Postal retirees with spouses also face new rules under PSHB.

Medicare Requirement: If your spouse is Medicare-eligible, they must enroll in Medicare Part B to stay on your PSHB family coverage.
Failure to Enroll: Your spouse could lose PSHB coverage if they don’t meet this requirement.

Discuss Medicare enrollment with your spouse to avoid unpleasant surprises.

10. Forgetting About International Coverage Differences

Medicare provides limited coverage outside the United States. Some PSHB plans offer supplemental international coverage, but only if you meet Medicare requirements.

Important: If you travel abroad often, check your PSHB plan’s international coverage rules carefully.
Tip: You may need additional travel insurance for full protection.

Assuming your plan “works the same everywhere” could leave you vulnerable during international travel.

Avoiding Costly Errors and Protecting Your Retirement Health Coverage

If you are a postal retiree, 2025 is not the year to make assumptions about your health coverage. Medicare coordination with PSHB is mandatory in most cases and misunderstanding even a small detail can result in higher costs or lost coverage.

Here is what you should do now:

Review your Medicare enrollment status.
Confirm you are meeting PSHB and Medicare Part B requirements.
Compare PSHB plan options every Open Season.
Discuss Medicare enrollment with covered family members.
Reach out to a licensed professional listed on this website if you need assistance making decisions about your coverage.

Getting expert help today can prevent major headaches tomorrow.