Medicare 2026

QMB Billing Protections: What to Do If a Provider Bills You for Medicare Costs

If you are enrolled in the Qualified Medicare Beneficiary (QMB) program, federal law protects you from paying Medicare deductibles, coinsurance and copayments. Even so, improper bills do go out — sometimes from a doctor's office, a hospital, a pharmacy, or a debt collector. The good news: you have clear rights, and there are specific steps you can take to stop the charges and get your money back if you already paid.

Here is a plain-English guide to how QMB billing protections work and what to do if you ever get a bill you should not have received.

What QMB is, in one paragraph

QMB is one of the Medicare Savings Programs run by state Medicaid agencies. For people who qualify, Medicaid pays Medicare Part B premiums and covers Medicare cost sharing. For 2026, the federal QMB limits are $1,350 a month in income and $9,950 in resources for an individual, and $1,824 a month and $14,910 for a married couple. Income limits are slightly higher in two states outside the contiguous U.S., and some states count income and resources more generously. According to CMS, more than 8 million people — more than 1 in 8 Medicare beneficiaries — were in the QMB group in 2023.

The billing rule, exactly as it stands

Federal law prohibits all Original Medicare and Medicare Advantage providers and suppliers, including pharmacies, from billing QMB enrollees for Medicare Part A and Part B deductibles, coinsurance and copayments. This rule applies to every Medicare provider — not just the ones that also accept Medicaid.

CMS has been explicit about three important points:

• The protection applies on every date of service that you are a QMB.
• The protection applies even when the state Medicaid program pays the provider less than Medicare's full cost sharing amount — or nothing at all.
• The protection applies even if your QMB benefit comes from a different state than the one where you receive care.

You also cannot waive this protection. QMB enrollees are not allowed to choose to pay Medicare cost sharing themselves. A provider that bills you anyway is violating its Medicare provider agreement, or, for Medicare Advantage, its Part C obligations — and may be subject to sanctions.

One narrow exception: you may still owe a small Medicaid copayment if your state charges one. That is separate from Medicare cost sharing. For Medicare cost sharing, providers should bill the state Medicaid program, not you.

How to prove you are in QMB

The simplest way to prevent an improper bill is to make your QMB status visible from the start. Each time you get care:

• Present your Medicare card and your Medicaid card (or QMB card, if your state issues one).
• If you have Original Medicare, you can also show a Medicare Summary Notice, which indicates that you are in the QMB program.

Front-desk staff do not always know the QMB rules. A friendly reminder up front — "I'm in the QMB program, so I can't be billed for Medicare cost sharing" — often prevents problems later.

What to do if a bill arrives

If a bill shows up for Medicare deductibles, coinsurance or copayments, here is the sequence Medicare.gov recommends:

1. Contact the provider or debt collector. Tell them you are in the QMB program and cannot be charged for Medicare cost sharing. Ask them to recall the bill. CMS instructs providers to recall improper bills — including bills already sent to collections — and to refund any QMB cost sharing they collected. 2. If you are in a Medicare Advantage plan, contact the plan. Ask the plan to stop the charges on your behalf. 3. If the billing continues, call 1-800-MEDICARE (1-800-633-4227). Medicare can help resolve providers who will not stop. 4. If you already paid, request a refund. Contact the provider and your state Medicaid office to find out exactly how refunds are handled where you live.

Keep copies of bills, Medicare Summary Notices, and any notes from calls (dates, names, what was said). That paper trail makes the fix much faster if the issue goes beyond one phone call.

A quick note on coverage choices during Open Enrollment

QMB protections apply whether you have Original Medicare or a Medicare Advantage plan. If you are weighing your coverage during Annual Enrollment — October 15 to December 7, 2026, for coverage that starts January 1, 2027 — remember that both paths have trade-offs: Original Medicare paired with a stand-alone Part D plan (and, for some, a Medigap policy) offers broad provider access and predictable supplement rules, while Medicare Advantage bundles coverage and often includes extras but uses networks and plan-specific rules. There is no one-size-fits-all answer; it depends on your doctors, prescriptions, and preferences.

People with Medicaid or Extra Help also have a monthly Special Enrollment Period, available since 2025, to move to Original Medicare with a stand-alone Part D plan, or to switch stand-alone Part D plans. Full-benefit dual-eligible individuals can join an integrated D-SNP in any month.

For reference, the Part D out-of-pocket cap is $2,100 in 2026 and $2,400 in 2027. The most any Part D plan may charge as a deductible in 2027 is $700. The 2027 Part B standard premium and deductible, and the 2027 IRMAA income brackets, have not yet been announced; CMS typically releases those figures in the fall.

Where to go for help

For plain-language information on QMB, enrollment and your rights, visit Medicare.gov. To report a provider who continues to bill you after being told you are in QMB — or for help with any Medicare question — call 1-800-MEDICARE (1-800-633-4227), available 24 hours a day, seven days a week.