Skipping Medicare Part B Could Backfire—Especially If You Want to Keep Your PSHB Coverage Later On

Missy E
November 14, 2025

Key Takeaways

If you’re eligible for Medicare and enrolled in a PSHB plan, skipping Part B in 2025 could jeopardize your ongoing coverage and increase out-of-pocket costs later.
While the Part B premium might seem high now, penalties, loss of benefits, and limited re-enrollment opportunities can make delaying enrollment a costly mistake.

What You Risk by Skipping Part B in 2025

For many public sector retirees, especially those under the new Postal Service Health Benefits (PSHB) program, the decision to enroll in Medicare Part B is more consequential than ever. Beginning in 2025, PSHB enforces new rules that link your Part B enrollment status to the full availability of your benefits. If you choose to opt out of Part B, you may face serious financial and coverage consequences that weren’t present under the old FEHB system.

Skipping Medicare Part B isn’t just about saving a few hundred dollars each month—it’s a decision that can affect your access to care, the amount you’ll pay in deductibles, and even whether you’ll be able to keep your PSHB coverage in the future.

What Is Medicare Part B and Why Does It Matter So Much Now?

Medicare Part B covers outpatient medical services, including:

Doctor visits
Diagnostic tests
Durable medical equipment
Preventive care
Outpatient surgeries

In 2025, the standard Medicare Part B premium is $185 per month. While that cost may seem like a burden, it’s often much less than the total you could end up paying without it. The PSHB program integrates closely with Medicare—especially Part B—and this coordination impacts how your benefits work once you’re retired and Medicare-eligible.

PSHB plans are designed with the assumption that enrollees will take Part B when they become eligible. Skipping it alters how the plan pays claims, leading to increased deductibles, higher cost-sharing, and limited coverage coordination.

PSHB and Medicare Part B: What Changed in 2025

Starting January 1, 2025, the PSHB system officially replaces FEHB for all Postal Service employees and annuitants. With this shift, new Medicare-related requirements were introduced:

Mandatory Part B Enrollment: If you’re a Medicare-eligible PSHB annuitant and not exempt, you must enroll in Medicare Part B to keep full access to your PSHB benefits.
Limited Exemptions: Only certain groups are exempt—such as annuitants who retired on or before January 1, 2025, employees who were at least age 64 as of January 1, 2025, or individuals living overseas.
Integrated Prescription Coverage: Medicare Part D coverage is embedded in PSHB plans for Medicare-eligible retirees who enroll in Part B. If you skip Part B, you may also lose this drug coverage or face penalties.

These provisions significantly raise the stakes if you’re considering skipping or delaying Part B.

Financial Risks: Penalties and Gaps in Coverage

Avoiding the Part B premium might seem like a way to save money now, but it comes with long-term costs you can’t ignore.

Late Enrollment Penalty

If you don’t sign up for Part B when you’re first eligible, you may be required to pay a permanent monthly penalty. In 2025, the penalty adds 10% for every 12-month period you could have had Part B but didn’t. For example, if you delay for three years, your premium would be 30% higher—for life.

Higher Out-of-Pocket Costs

PSHB plans reduce or even waive certain out-of-pocket expenses—but only if you’re enrolled in Part B. Without it:

You may have to pay full deductibles (often $500 or more).
Copayments for office visits, specialist care, and ER visits may increase.
You may pay coinsurance rates of 30%–50% instead of 10%–20%.

These costs can quickly surpass the amount you save by avoiding the monthly Part B premium.

Loss of Coordination Benefits

When you pair Part B with PSHB, the plans often cover what Medicare doesn’t. Without Part B, this coordination fails, leaving you with bills that Medicare would have paid—and PSHB won’t pick up.

PSHB Re-Enrollment Limits and the One-Time Opt-Out Rule

Another factor to consider is that PSHB offers limited re-enrollment opportunities if you opt out of Part B.

If you voluntarily decline Part B and choose not to enroll during your initial eligibility period, you may forfeit certain benefits permanently.
Rejoining later may be restricted to specific enrollment periods, with coverage gaps and financial penalties.
Some PSHB plans may not offer full benefits or prescription drug coverage unless you are enrolled in both Medicare Part A and Part B.

This means that skipping Part B now could eliminate your ability to get full PSHB coverage later—especially during a serious illness when you most need it.

Exemptions That Allow You to Skip Part B (But Only in Specific Cases)

Not everyone is required to enroll in Medicare Part B under the new PSHB guidelines. You may be exempt if:

You retired on or before January 1, 2025
You were age 64 or older as of January 1, 2025
You reside permanently outside the U.S.
You are covered by Indian Health Services or VA health benefits exclusively

However, even if you qualify for an exemption, you should weigh the financial implications of skipping Part B carefully. Many plans still offer reduced cost-sharing when Part B is present, even if you’re not required to have it.

What Happens If You Change Your Mind Later

If you decide to enroll in Part B after your initial eligibility window (seven months surrounding your 65th birthday), you’ll have to wait for the General Enrollment Period (January 1 to March 31 each year). Your coverage will not begin until July 1.

This delay can create significant gaps in coverage. In the meantime, you may:

Be responsible for full PSHB deductibles and copayments
Miss out on integrated Part D prescription coverage
Be subject to the late enrollment penalty

That’s why it’s critical to plan your Part B decision at the time you first become eligible.

Coordinating PSHB With Medicare: How They Work Together

When enrolled in both Medicare and a PSHB plan:

Medicare pays first for covered services.
PSHB pays second, often covering remaining coinsurance, copayments, or deductibles.
You may receive benefits like waived deductibles, lower copayments, and integrated pharmacy coverage under a Medicare Part D Employer Group Waiver Plan (EGWP).

This setup provides a more comprehensive and cost-effective safety net—especially if your health needs grow more complex over time.

Additional Considerations Before You Decide

Before you decline Part B, be sure to:

Review your PSHB plan brochure to understand what benefits depend on Medicare enrollment.
Evaluate the cost of common services—doctor visits, ER care, diagnostics—with and without Medicare Part B.
Assess your long-term health outlook. Skipping Part B may be tolerable with excellent health now, but far riskier as medical needs increase.
Talk to a licensed agent listed on this website to walk through your plan details, especially if you are nearing your Medicare eligibility window.

Your PSHB Coverage Depends on Smart Medicare Choices

In 2025, the PSHB program creates a stronger link between Medicare Part B and your access to full benefits. Skipping Part B may feel like a cost-saving decision now, but it comes with long-term consequences—from coverage limitations and penalties to re-enrollment barriers.

The best course of action is to understand the PSHB rules in detail, evaluate your eligibility and exemption status, and make your decision with a long-term view in mind. If you’re unsure what’s best for your situation, it’s wise to get professional guidance.

Speak with a licensed agent listed on this website to review your Medicare timeline and assess how your choices impact your PSHB benefits.