How Nurse Practitioners Bill Medicare and What That Means for Your Care

Yes, nurse practitioners can bill Medicare directly in most cases

Nurse practitioners (NPs) can submit bills to Medicare for the services they provide, but the rules depend on where they work and what state they practice in. In most states, an NP working independently can bill Medicare under their own National Provider Identifier (NPI) number. If an NP works in a clinic or hospital, that facility may bill on their behalf. The key difference from a physician is that Medicare typically pays NPs at 85 percent of what it would pay a doctor for the same service — not 100 percent.

This matters to you because it affects whether your out-of-pocket costs stay the same when you see an NP instead of a doctor, and whether the NP's office can accept Medicare assignment (meaning they agree to accept Medicare's payment as full payment, with you owing only your copay or coinsurance).

Key Takeaways

Nurse practitioners can bill Medicare directly under their own provider number in most states, though payment is typically 85 percent of the physician rate for the same service.
An NP must have a collaborative agreement with a physician in some states, but this does not prevent them from billing Medicare independently.
Your out-of-pocket cost may be the same whether you see an NP or a doctor if both accept Medicare assignment, because you pay the same copay or coinsurance percentage.
If an NP does not accept assignment, you may owe the full bill and have to seek reimbursement from Medicare yourself, which takes longer.
You can check whether an NP is enrolled with Medicare and what they charge by searching the Medicare Provider Enrollment, Chain, and Ownership System (PECOS).

How Medicare payment works when you see a nurse practitioner

When an NP bills Medicare, the claim goes through the same process as a doctor's claim. Medicare assigns a code to the service (such as an office visit or procedure), looks up the allowed amount for that code, and pays 80 percent of it if you have met your deductible. You are responsible for the remaining 20 percent, unless you have a Medigap or Medicare Advantage plan that covers it.

The difference is the allowed amount itself. For most services, Medicare's allowed amount for an NP is 85 percent of what it would allow for a physician. This means if a doctor's office visit is allowed at $100, an NP's visit might be allowed at $85. Medicare pays 80 percent of $85 ($68), and you owe 20 percent ($17), rather than owing 20 percent of $100 ($20). The savings go to Medicare, not to you — but your copay or coinsurance does not increase.

Some NPs work in settings where the facility bills Medicare instead of the NP billing individually. In a hospital outpatient department or federally may have access to health center, for example, the organization submits the bill and receives the payment. You still owe the same copay or coinsurance, and the NP's credentials do not change your cost.

State rules and collaborative agreements

Nurse practitioner practice rules vary by state. Some states allow NPs to practice independently with no physician oversight. Others require an NP to have a collaborative agreement with a physician — a written arrangement stating that a doctor will be available for consultation and will review certain decisions. A few states still require more direct supervision.

A collaborative agreement does not prevent an NP from billing Medicare. Medicare does not require a physician to co-sign the bill or be listed on the claim. The agreement is between the NP and the state licensing board, not between the NP and Medicare. You may never see evidence of it, and it does not affect your bill.

If you are seeing an NP and want to know the practice rules in your state, you can contact your state's nursing board or ask the NP's office directly. The office should be able to tell you whether the NP practices independently or under a collaborative agreement.

Assignment and what you might owe

When a provider accepts assignment, they agree to bill Medicare and accept Medicare's allowed amount as full payment (except for your copay or coinsurance). Most NPs who are enrolled with Medicare accept assignment, which means your bill should not surprise you.

Some NPs do not accept assignment. If this is the case, they can charge more than Medicare's allowed amount, and you may owe the difference out of pocket. For example, if Medicare's allowed amount is $85 and the NP charges $120, you might owe the full $120 plus any coinsurance. You would then submit the bill to Medicare yourself and wait for reimbursement, which can take several weeks.

Before your first visit with an NP, ask the office whether they accept Medicare assignment. If they do not, ask what their charge is for the service you need and whether you can get it in writing. This protects you from unexpected bills.

How to check if a nurse practitioner is enrolled with Medicare

You can verify that an NP is enrolled with Medicare and see their billing information by searching the Medicare Provider Enrollment, Chain, and Ownership System (PECOS) at pecos.cms.hhs.gov. Search by the NP's name or their NPI number (a 10-digit identifier). The search will show you whether they are enrolled, what type of provider they are listed as, and whether they accept assignment.

If an NP is not in PECOS, they are not enrolled with Medicare and cannot bill Medicare directly. In that case, you would need to pay out of pocket and seek reimbursement yourself, or see a different provider.

You can also ask the NP's office for their NPI number and whether they accept assignment. A professional office should provide this information without hesitation. If they seem evasive or cannot answer, that is a sign to ask more questions before scheduling.

Nurse practitioners in Medicare Advantage plans

If you have a Medicare Advantage plan (Part C), the rules are slightly different. Your plan contract determines whether NPs are in-network, what you pay, and how they bill. Some Medicare Advantage plans pay NPs at the same rate as physicians; others use the 85 percent rate. Your plan's provider directory should list NPs and show whether they are in-network.

Before seeing an NP through a Medicare Advantage plan, check your plan's website or call the plan to confirm the NP is in-network and what your copay will be. Out-of-network NPs may cost you significantly more, or the plan may not cover the visit at all.

When to ask questions about your nurse practitioner's billing

You should feel comfortable asking an NP's office about billing before your visit. Good questions include: "Are you enrolled with Medicare?", "Do you accept Medicare assignment?", "What is your charge for this visit?", and "Will I owe anything beyond my copay?" If the office cannot answer these questions clearly, or if the answers do not match what you see on your bill later, contact Medicare at 1-800-MEDICARE to report it.

If you receive a bill that seems wrong — for example, you were charged more than the office quoted, or you were billed for a service you did not receive — do not pay it when ready. Call the NP's office and ask for an explanation. If you still disagree, you can file a complaint with your state's medical board or with Medicare.

Frequently Asked Questions

Will my copay be higher if I see a nurse practitioner instead of a doctor?

No. Your copay is based on the type of visit (such as an office visit or procedure), not on whether the provider is an NP or a doctor. If both accept Medicare assignment, you pay the same copay. The difference in Medicare's payment rate does not affect what you owe.

Can a nurse practitioner order tests and prescribe medication?

Yes, in most states. NPs can order lab work, imaging, and other diagnostic tests, and they can prescribe most medications, including controlled substances in some states. The rules vary by state, so if you have questions about what your NP can do, ask them directly or contact your state's nursing board.

What if I see a nurse practitioner at a hospital or clinic?

The facility bills Medicare on the NP's behalf, and you owe the same copay or coinsurance as you would for any visit to that facility. The NP's credentials do not change your cost. You can ask the billing office whether the provider is an NP or a doctor, but it should not affect your bill.

Can I see a nurse practitioner for Medicare preventive services?

Yes. NPs can provide many preventive services covered by Medicare at no cost to you, such as annual wellness visits, cancer screenings, and vaccinations. These services are covered the same way whether provided by an NP or a doctor, as long as the provider is enrolled with Medicare.

What should I do if I disagree with a bill from a nurse practitioner?

Contact the NP's office first and ask for an itemized bill and an explanation of the charges. If you still disagree, you can file an appeal with Medicare or a complaint with your state's medical board. Keep copies of all bills and correspondence.

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.