Key Takeaways

• A provider’s Medicare status can affect your care options and costs under PSHB.
• Preparing key questions for your doctor ensures smoother transitions after 2025.

Choosing your doctors under the new Postal Service Health Benefits (PSHB) program can feel complex, especially with Medicare rules involved. Your provider’s Medicare status—whether enrolled or opted out—may influence your access and out-of-pocket expenses. This guide explains these distinctions and how you can make the most informed decisions during the PSHB transition in 2026.

What Is a Medicare Opting Out Provider?

Understanding Medicare participation status

In Medicare, a provider’s participation status shapes their relationship with both Medicare itself and patients like you. There are three main categories:

• Participating providers: These agree to accept Medicare’s approved amount as full payment for covered services and always bill Medicare directly.
• Non-participating providers: These still accept Medicare but may charge slightly more than the Medicare-approved amount. They handle your claims differently but don’t leave you unconnected from Medicare coverage.
• Opting out providers: These doctors have formally chosen not to work with Medicare at all. They neither submit claims to Medicare nor accept Medicare payment, and instead enter private contracts with their patients.

How providers opt out of Medicare

To become opted out, a provider must submit an official affidavit to Medicare, usually lasting two years at a time. Once opted out, these providers:

• Can’t bill Medicare for covered services,
• Must have patients sign a private contract before any care,
• Set their own rates, unrelated to Medicare limits.

This participation decision can have a direct impact on your care options, especially if you want your doctor visits reimbursed under Medicare or, now, under the requirements of the PSHB program.

What Does It Mean to Be Medicare-Enrolled?

Medicare-enrolled vs. participating providers

A Medicare-enrolled provider is authorized by the Centers for Medicare & Medicaid Services (CMS) to provide services for, and bill, Medicare patients. Within enrollment, the most common distinction is participating (always accepts Medicare rates) or non-participating (may balance bill above Medicare rates).

• Enrolled, participating providers almost always result in the lowest and most predictable out-of-pocket expenses for you.
• Enrolled, non-participating providers can charge a bit more, but you can still submit claims to Medicare for partial reimbursement.
• Opted-out providers, in contrast, do not bill Medicare at all, and you cannot seek Medicare reimbursement for services they provide.

How enrollment affects billing and coverage

Your ability to claim Medicare coverage depends on seeing an enrolled provider. Most PSHB plans require doctors to at least be Medicare-enrolled for you to receive the plan’s full benefit (or cost-sharing), since Medicare generally acts as the primary payer after age 65 for retirees.

If you visit a provider who is enrolled (even if non-participating), you benefit from Medicare’s set rates and protections against unanticipated expenses. Opted-out providers do not trigger those protections.

How Do PSHB Rules Affect Doctor Choice?

Medicare requirements in PSHB plans

From January 1, 2025, the PSHB program became the main health insurance option for Postal Service annuitants (retirees and family members), requiring most Medicare-eligible retirees to enroll in Medicare Part B to maintain full PSHB benefits. This means:

• Your PSHB plan may coordinate closely with Medicare.
• Seeing a Medicare-enrolled provider ensures optimal coverage and streamlined billing.
• Opted-out providers may result in higher out-of-pocket expenses since PSHB and Medicare may not coordinate benefits as seamlessly.

Provider access after PSHB transition

The PSHB network typically mirrors those of previous FEHB plans, but with added emphasis on Medicare integration for retirees. While you are free to seek care from any provider, only services from Medicare-enrolled doctors are usually eligible for coordinated coverage. Choosing a doctor who has opted out of Medicare may mean your visits are not covered in the same manner, leaving you to pay more out of pocket.

Can I Keep My Current Doctor?

Questions to ask providers about Medicare status

To avoid unexpected bills and ensure continuity of care, ask the following:

• “Are you currently enrolled in Medicare, and do you accept Medicare assignment?”
• “Will you continue seeing patients insured primarily through PSHB plans after the transition?”
• “If you’ve opted out of Medicare, what will my costs be under a private contract?”

A clear understanding of your provider’s Medicare participation means fewer billing surprises.

Considering out-of-network scenarios

If your doctor is not Medicare-enrolled or is opted out, consider:

• You may need to pay the full cost of services directly to the doctor.
• Your PSHB plan and Medicare may not reimburse you, leaving all charges as your responsibility.
• It’s wise to weigh whether to switch to a Medicare-enrolled provider, depending on how important minimizing costs and maximizing coverage is to you.

Are There Cost Implications for Using Opted-Out Doctors?

How billing works with opted-out providers

If you see a doctor who has opted out of Medicare:

• They set their fees and bill you directly.
• Neither you nor your provider can submit claims to Medicare for reimbursement.
• You must sign a private contract that explains you are responsible for all charges.

Your PSHB plan may also limit or exclude coverage for these visits, increasing your out-of-pocket burden.

Potential out-of-pocket costs to expect

When care is delivered by an opted-out provider, you can expect:

• No Medicare or PSHB coverage on those doctor bills (in most cases),
• Responsibility to pay the doctor’s full rate out of pocket,
• No count toward your PSHB plan’s out-of-pocket maximum or deductible.

This makes understanding the provider’s Medicare status even more important as you plan your health care.

What Should Federal Retirees Ask in 2026?

Checklist for confirming provider choices

As you consider your options for the coming year, use this quick checklist:

• Confirm the Medicare status of your primary and specialty providers.
• Ask your doctor’s office whether they will accept both Medicare and your PSHB plan going forward.
• Review your PSHB plan’s provider directory for up-to-date listings.
• Contact your provider’s billing office if unclear about their participation.

Clarifying PSHB, Medicare, and doctor relationships

Understanding how your PSHB plan and Medicare interact is essential before booking appointments. You may want to ask:

• “If I see you, will my visit be eligible for both Medicare and PSHB coverage?”
• “Are there any circumstances where I would need to pay in full?”

Getting clear answers can help you avoid both confusion and any disruption in your care.

Where Can I Find Additional Support?

Resources for PSHB and Medicare questions

The federal government and various non-profit organizations provide detailed information and comparison tools regarding:

• PSHB plan details and transition timelines
• Medicare provider directories, eligibility, and claims procedures

Check official OPM communications, Medicare.gov, and mailing materials from your plan for the most reliable updates.

Contacting neutral benefits help desks

If you need personal guidance, consider:

• Calling OPM’s Retirement Services or a Medicare-trained counselor at your local State Health Insurance Assistance Program (SHIP)
• Using your plan’s member services phone line for PSHB-specific questions about networks and billing

Reaching out to impartial resources can help you make the most informed choices for your health care in 2026 and beyond.