How Medicare Pays Doctors, Hospitals, and Other Providers

Medicare pays providers through a system of set rates, not through you

When you receive care as a Medicare beneficiary, Medicare pays the provider directly for most services. You do not send money to Medicare and then get reimbursed. Instead, the provider bills Medicare, Medicare determines what it will pay based on the type of service and your coverage, and the provider receives that payment. Your role is to pay any cost-sharing — the deductible, copay, or coinsurance — that your coverage requires.

How much Medicare pays depends on where you receive care, what type of care it is, and whether you have Original Medicare or a Medicare Advantage plan. Original Medicare uses a fee schedule set by the Centers for Medicare & Medicaid Services (CMS). Medicare Advantage plans (Part C) negotiate their own rates with providers. Understanding this structure helps you know what to expect when you receive a bill.

Key Takeaways

Medicare pays providers directly based on set rates or negotiated contracts, not by reimbursing you after you pay out of pocket.
Original Medicare uses a standardized fee schedule; Medicare Advantage plans negotiate rates with individual providers.
You pay cost-sharing (deductible, copay, or coinsurance) based on your coverage type, not the full provider charge.
Providers must accept Medicare payment as payment in full, except for cost-sharing amounts you owe.
If a provider is out of network or does not accept Medicare, you may owe the full charge or a larger share.

How Original Medicare payment works

Original Medicare (Part A for hospital care and Part B for outpatient services) pays providers using a fee schedule — a list of set amounts for each service. The amount varies by geographic location and the type of provider. For example, a knee X-ray in rural Kansas costs Medicare less than the same X-ray in New York City, and the rate paid to a hospital outpatient department differs from the rate paid to an independent imaging center.

When a provider submits a claim to Medicare, the claim goes through a contractor who reviews it for accuracy and completeness. If the claim is approved, Medicare pays the provider 80 percent of the approved amount for most Part B services (after you meet your deductible). You are responsible for the remaining 20 percent coinsurance. Hospital stays under Part A work differently — you pay a deductible per stay, and Medicare covers the rest for the first 60 days.

Providers who accept Medicare must accept the Medicare-approved amount as payment in full. They cannot bill you for the difference between their charge and what Medicare pays, except for your cost-sharing. This rule protects you from surprise bills when you use an in-network provider.

How Medicare Advantage payment works

Medicare Advantage plans (Part C) receive a fixed monthly payment from Medicare for each member, then use that money to pay providers. Instead of using the Medicare fee schedule, each plan negotiates its own rates with hospitals, doctors, and other providers. One plan might pay a cardiologist $150 for an office visit while another pays $120 for the same visit.

Your cost-sharing in a Medicare Advantage plan depends on the plan's design. You might pay a $20 copay for a doctor visit, a $250 copay for an emergency room visit, or coinsurance of 20 percent for certain services. These amounts vary widely between plans. The plan's provider network determines which doctors and hospitals you can use without paying more — using an out-of-network provider typically costs you significantly more.

Medicare Advantage plans must cover all services that Original Medicare covers, but they can structure cost-sharing differently. Some plans charge less for primary care and more for specialists. Others cap your out-of-pocket spending at a maximum amount per year, which Original Medicare does not do.

What happens when a provider does not accept Medicare

Some providers do not accept Medicare at all. These are called non-participating providers. If you receive care from a non-participating provider, you may owe the full charge rather than just your cost-sharing amount. The provider can bill you for the difference between their charge and what Medicare would have paid.

A small number of doctors are opted out of Medicare entirely, meaning they do not bill Medicare under any circumstances. If you see an opted-out provider, you must sign a contract before receiving care that states you understand you will pay the full fee and Medicare will not reimburse you at all. This is different from a non-participating provider, who can still bill Medicare even if you end up owing more.

For Medicare Advantage members, using an out-of-network provider is usually more expensive than using an in-network provider, but the plan still pays something. Check your plan's provider directory before scheduling care to avoid unexpected bills.

Understanding your bill after Medicare pays

After Medicare pays the provider, you may receive an Explanation of Benefits (EOB) from Medicare or your plan. This document shows what the provider charged, what Medicare approved, what Medicare paid, and what you owe. The amount you owe is your cost-sharing — the deductible, copay, or coinsurance. You do not owe the difference between the provider's charge and the approved amount.

If you see a charge on your bill that seems wrong, compare it to your EOB. The EOB explains which services were covered, which were denied, and why. If Medicare denied a service, the provider may bill you for it, or the provider may have already written it off. Contact the provider's billing department or Medicare directly if you do not understand a charge.

Keep your EOBs for your records. They help you track your deductible progress, verify that services were billed correctly, and provide proof of payment if you need to dispute a charge later.

How payment timing affects your out-of-pocket costs

Your deductible and out-of-pocket maximum reset on January 1 each year for both Original Medicare and Medicare Advantage. Original Medicare Part B has a deductible of a set amount per year (the exact amount changes annually). Once you meet it, you pay 20 percent coinsurance for most services for the rest of the year. Original Medicare does not have an out-of-pocket maximum, so your coinsurance costs can continue indefinitely.

Medicare Advantage plans have both a deductible and an out-of-pocket maximum. Once you reach your out-of-pocket maximum, the plan pays 100 percent of covered services for the rest of the year. This cap provides protection that Original Medicare does not offer, but the deductible and maximum amounts vary by plan.

Timing matters when you are close to meeting your deductible. If you schedule elective procedures early in the year, you pay more out of pocket. If you schedule them later in the year after meeting your deductible, you pay less. This is one reason to plan non-urgent care strategically.

Special payment situations

Some services have different payment rules. Preventive services like annual wellness visits, cancer screenings, and vaccinations are covered at 100 percent by Original Medicare with no deductible or coinsurance. Medicare Advantage plans must also cover preventive services at no cost to you.

If you receive care from a provider who is not in your Medicare Advantage network, or if you receive emergency care out of state, the plan still pays something, but you may owe more. Emergency services are usually covered at the in-network rate even if the emergency room is out of network.

If you have both Medicare and another insurance (such as employer coverage or Medicaid), the other insurance may pay first, and Medicare pays second. This is called coordination of benefits. The order of payment depends on the type of insurance and your age or employment status.

Frequently Asked Questions

Why does my provider bill me more than Medicare pays?

Providers often charge more than Medicare's approved amount. If the provider accepts Medicare, they must write off the difference and cannot bill you for it. You only owe your cost-sharing (deductible, copay, or coinsurance). If the provider does not accept Medicare, they can bill you for the difference.

Can I negotiate the amount Medicare pays a provider?

No. Original Medicare's fee schedule is set by CMS and applies to all providers nationwide (adjusted by location). Medicare Advantage plans negotiate rates with providers, but individual members cannot negotiate. You can choose a different plan during open enrollment if you want different cost-sharing.

What if I think Medicare paid the wrong amount?

Review your Explanation of Benefits to understand what was approved and why. If you believe there is an error, contact Medicare at 1-800-MEDICARE or your Medicare Advantage plan directly. You can also ask your provider's billing department to review the claim with you.

Do I have to pay the provider before Medicare pays?

No. Providers bill Medicare directly, and Medicare pays them. You pay only your cost-sharing amount, usually after Medicare has paid. Some providers may ask for payment at the time of service, but you should only pay your estimated cost-sharing, not the full charge.

What happens if a provider goes out of business after I receive care?

Medicare still pays the provider's claim if it was submitted before the business closed. If the provider did not submit your claim, you may need to contact Medicare to report it. Original Medicare has protections for unpaid claims, but the process can take time.

This guide is for general information only and is not medical, financial, legal, or other professional advice. For decisions specific to your situation, consult a qualified professional. See our Editorial Policy.