What happens if a provider is a non-participating provider for Medicare?

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When a healthcare provider is non-participating (non-PAR) in Medicare, they are enrolled in the Medicare program but have chosen not to sign a general agreement to accept assignment on all claims.

📊 How Non-Participating Status Works

  • Case-by-Case Assignment: They can choose whether to accept Medicare’s approved amount as payment in full for each individual patient or service.
  • Lower Reimbursement: Medicare reimburses non-participating providers at 95% of the standard Medicare Physician Fee Schedule.
  • Mandatory Claim Submission: They are still legally required to submit claims directly to Medicare for covered services.

💡 What It Means for Your Costs

  • ⚠️ The Limiting Charge
    • If the provider declines assignment for your service, they can charge up to 15% more than the Medicare-approved amount for non-participating providers (known as the limiting charge).
    • Because non-PAR approved amounts are 5% lower, the actual maximum amount a provider can bill is roughly 115% of the non-PAR fee schedule, or about 9.25% above standard participating rates.
    • You are responsible for paying this excess charge in addition to your standard 20% Part B coinsurance and any unmet deductible.
  • 🗓️ Up-Front Payments & Billing Workflows
    • Non-participating providers may ask you to pay the entire bill up front.
    • If they do not accept assignment, Medicare will send its share of the reimbursement directly to you rather than the doctor.

Can I be reimbursed if my doctor is non-participating in Medicare?

Yes, you can be reimbursed by Original Medicare for covered services if your doctor is non-participating, but you may still have out-of-pocket costs.

How Reimbursement Works for Non-Participating Doctors

  • Non-participating status: A non-participating (non-par) doctor is enrolled in Medicare and can still see Medicare patients and submit claims for covered services, but they do not agree to accept Medicare's standard approved amount as full payment.
  • Reimbursement rate: Medicare reimburses 80% of the approved non-participating fee schedule (which is 5% lower than the standard participating fee schedule) after you meet your Part B deductible.
  • The limiting charge: The doctor is allowed to charge up to 15% more than the Medicare-approved non-participating amount (known as the "limiting charge"). You are responsible for this extra amount out of pocket, alongside your standard 20% coinsurance.
  • Filing claims: The doctor is required by law to submit the claim to Medicare for covered services. Medicare will then send the reimbursement payment directly to you if the doctor does not accept assignment for that visit.
  • Medigap coverage: If you have a Medicare Supplement Insurance (Medigap) policy, it may cover some or all of these excess charges.

Non-Participating vs. Opt-Out Providers

Be careful not to confuse a non-participating doctor with an opt-out provider. Doctors who have entirely "opted out" of Medicare do not bill Medicare at all, require a private contract, and offer zero reimbursement from the program.

What will Medicare pay if the physician does not participate in Nonpar?

Medicare pays a non-participating (non-par) physician 95% of the standard Medicare Physician Fee Schedule amount, depending on whether they accept assignment for that specific service.

How Non-Par Payments Work

  • Accepting Assignment on a Claim: If the non-par doctor agrees to accept assignment for a visit, Medicare pays the provider directly 80% of that reduced 95% allowable amount. You are responsible for the remaining 20% coinsurance.
  • Not Accepting Assignment (Unassigned Claims): If the doctor does not accept assignment, they can choose to bill you up to the maximum "limiting charge" (115% of the non-par fee schedule amount). In this case, Medicare sends its 80% reimbursement portion directly to you (the patient) rather than the doctor, and you must pay the physician the full out-of-pocket amount.
  • Difference from Opt-Out: A non-par doctor still participates in Medicare on a case-by-case basis. This is different from an "opt-out" doctor who completely rejects Medicare and requires a private contract where Medicare pays nothing.

What if my doctor does not participate in Medicare?

If a doctor does not accept Medicare, you will likely face higher out-of-pocket costs, depending on whether they are a "non-participating" or "opt-out" provider.

Non-Participating Providers

A non-participating doctor accepts Medicare insurance on a case-by-case basis, but does not take Medicare's approved rate as full payment across the board.

  • Balance Billing: They can charge up to 15% more than the Medicare-approved amount for a covered service (known as the limiting charge).
  • Upfront Costs: You may have to pay the full bill at the time of your visit.
  • Claims: The doctor is still required to submit a claim to Medicare for covered services, and Medicare may reimburse you a portion of the approved amount.

Opt-Out Providers

An opt-out doctor has completely withdrawn from the Medicare program and signs a private contract with you.

  • Full Cost: You must pay 100% of the doctor’s charges out of pocket.
  • No Reimbursement: Medicare will not pay anything toward these bills, and you cannot submit a claim for payback (except in urgent or emergency situations).
  • No Limits: The doctor can charge whatever fee they choose.

Your Options

If your doctor does not take Medicare, you can:

  • Pay the extra costs or full price out of pocket.
  • Ask the office for a referral to a doctor who accepts Medicare assignment.
  • Look for a new primary care physician or visit an Urgent Care Center that accepts Medicare.

If a provider is a non-participating provider for Medicare, how does a limiting charge affect them?

A Medicare limiting charge caps the maximum amount a non-participating provider can legally bill a patient for an unassigned service at 115% of the Medicare-approved amount for non-participating providers.

How the Limiting Charge Affects Providers

  • Maximum Billing Cap: On unassigned claims (where the provider does not accept Medicare's approved amount as payment in full), the provider cannot charge the patient more than 115% of the non-participating fee schedule.
  • Lower Medicare Reimbursement: Medicare pays non-participating providers 5% less (95% of the standard fee schedule) than what it pays participating providers. The 115% limiting charge is calculated based on this reduced non-participating fee schedule, not the higher participating rate.
  • Case-by-Case Choice: Non-participating providers do not have to accept assignment for every patient or service; they can decide on a claim-by-claim basis whether to accept Medicare assignment. If they do accept assignment, the limiting charge does not apply, and they must accept Medicare's allowed amount as payment in full.
  • Penalties for Violations: If a provider knowingly and repeatedly charges a patient more than the federal limiting charge, they can face severe penalties, including civil monetary fines up to $10,000 per violation and potential exclusion from the Medicare program.

You can read more about provider rules through the Medicare Interactive guide on provider classifications.

How Do Medicare Participating Vs Non-participating Providers Differ? - Medicare Made Simple Guide

9 related questions found

What happens if a provider is a non-participating provider for Medicare?

If a doctor or facility is a non-participating (non-par) provider for Medicare, they are enrolled in Medicare but do not agree to accept the Medicare-approved amount as full payment for all services.

How Non-Participating Providers Work

  • Case-by-Case Assignment: They can choose whether to "accept assignment" (take the Medicare-approved amount as full payment) for each individual patient or service.
  • Lower Reimbursement: Medicare reimburses non-participating providers at 95% of the Medicare Physician Fee Schedule, which is 5% less than participating providers.
  • Mandatory Claim Submission: They are still legally required to submit claims to Medicare for covered services.

Financial Impact on You

  • The Limiting Charge: If the provider does not accept assignment for your visit, they can charge you up to 15% more than the Medicare-approved amount. This extra cost is called a limiting charge.
  • Higher Out-of-Pocket Costs: You are responsible for the standard 20% Medicare coinsurance plus any extra amount up to that 15% limiting charge (some Medigap supplemental plans help cover these excess charges).
  • Upfront Payments: They may ask you to pay the entire bill at the time of your appointment, and Medicare will then reimburse you your portion later.

Note: A non-participating provider is different from an opt-out provider, who rejects Medicare entirely, or an out-of-network provider under a private or Medicare Advantage plan.

What is the maximum reimbursement a non-participating physician who does not accept Medicare assignment may receive from Medicare?

The maximum amount a nonparticipating physician who does not accept Medicare assignment can bill for a service is capped by the limiting charge, which is 115% of the non-participating Medicare fee schedule (or about 109.25% of the standard participating fee schedule). However, Medicare itself reimburses 80% of the non-participating approved amount (95% of the standard fee schedule), and payment for an unassigned claim is paid directly to the patient rather than the physician.

Key Details

  • Limiting Charge: Caps the total amount the doctor can charge the patient for an unassigned service at 115% of the non-PAR fee schedule.
  • Medicare Payment on Unassigned Claims: Medicare sends its portion (80% of the approved 95% non-PAR amount) directly to the beneficiary, not the provider.
  • Patient Responsibility: The patient is responsible for paying the provider the actual charge (up to the limiting charge), which includes the Medicare payment received by the patient plus any out-of-pocket balance.

What is the Medicare payment rate for non-participating providers?

The Medicare payment rate for non-participating (non-PAR) providers is 95% of the standard Medicare Physician Fee Schedule (MPFS) allowed amount for participating providers.

Key Payment and Billing Details

  • Reimbursement Rate: Medicare pays non-participating providers 5% less than the approved amount for participating providers.
  • Assignment Rules: Non-participating providers do not sign a universal agreement and can choose whether or not to accept Medicare assignment on a claim-by-claim basis.
  • Limiting Charge: If a non-participating provider does not accept assignment for a service, they can charge the patient a maximum of 115% of the non-PAR fee schedule amount (which equals about 9.25% above the standard participating fee schedule).
  • Upfront Costs: Patients may be required to pay the full bill upfront, and Medicare will then reimburse the patient 80% of the approved non-PAR amount (after the deductible is met).

Is it true that physicians who are nonparticipating with the Medicare program are only allowed to bill the limiting charge to patients?

Yes, it is true with a key condition: non-participating physicians are only allowed to bill up to the limiting charge (115% of the Medicare-approved amount) on services where they do not accept assignment.

How Non-Participating Billing Works

  • Case-by-Case Basis: Non-participating (non-PAR) providers can choose whether to accept assignment for each individual patient or service.
  • When Assignment Is Accepted: If the physician accepts assignment, they agree to accept the Medicare-approved amount as payment in full. They can only bill the patient for the standard deductible and coinsurance. The limiting charge does not apply here.
  • When Assignment Is Not Accepted (Unassigned Claims): If the physician does not accept assignment, they can balance-bill the patient, but federal law caps that extra amount at 15% above the non-participating Medicare fee schedule (making the total maximum charge 115% of the allowed amount). This maximum cap is the Medicare Limiting Charge.

What is a non-participating physician?

A non-par provider (non-participating provider) is a doctor or healthcare facility that is enrolled in Original Medicare but has chosen not to sign a formal annual participation agreement.

Key Characteristics

  • Flexible Assignment: They choose whether to accept Medicare assignment (accepting Medicare's approved payment amount) on a case-by-case basis for each patient or claim.
  • Lower Reimbursement: Medicare pays non-par providers 95% of the standard fee schedule amount given to participating (PAR) providers.
  • Balance Billing: If they do not accept assignment on a claim, they can legally charge the patient up to the "limiting charge," which is typically 115% of the Medicare-approved amount for non-par services.
  • Not "Opted Out": Non-par providers still submit claims to Medicare and see Medicare patients, unlike providers who completely "opt out" of the Medicare program.