When it comes to Medicare, one of the most important decisions healthcare providers face is whether to participate as a PAR (Participating) provider or operate as a Non-PAR (Non-Participating) provider. While the difference may seem technical, it has a direct impact on how providers get paid, how much patients owe out of pocket, and how smoothly the billing process runs.
Choosing the right status can influence your practice’s revenue, patient satisfaction, and overall administrative workload. In this blog, we’ll break down PAR vs Non-PAR providers in Medicare billing, compare costs, benefits, and drawbacks, and help you decide which option aligns best with your goals.
What is a Medicare Participating (PAR) Provider?
A Medicare Participating (PAR) provider is a healthcare professional or facility that signs a participation agreement with Medicare. This agreement means the provider fully commits to Medicare’s rules on billing and reimbursement.
Here’s what that looks like in practice:
- Accepts Medicare patients: PAR providers agree to treat all Medicare beneficiaries.
- Accepts assignment on all claims: They accept Medicare’s approved payment as the total amount for covered services.
- Medicare-approved rates: Payments are based on Medicare’s fee schedule, which means no surprise bills beyond the patient’s deductible and coinsurance.
- No balance billing: Patients won’t face additional charges for covered services beyond what Medicare allows.
Example: If a service is priced at $200 by a PAR provider, and Medicare approves $168, the provider must accept $168 as full payment. Medicare pays 80% ($134.40), and the patient covers the remaining 20% ($33.60).
This arrangement gives patients predictable costs and providers consistent reimbursements, making PAR participation the most common choice among Medicare providers.
What is a Non-Participating (Non-PAR) Provider?
A Non-Participating (Non-PAR) provider chooses not to sign Medicare’s participation agreement. This option gives providers more flexibility but also shifts some responsibility to the patient.
Key features include:
- Doesn’t accept assignment on all claims: A Non-PAR provider can decide, claim by claim, whether to accept Medicare’s approved payment as full reimbursement.
- Sets their own rates: They can charge more than Medicare’s approved amount, within certain limits.
- Higher patient out-of-pocket costs: Patients may need to pay upfront and then seek partial reimbursement from Medicare.
- Direct reimbursement to patients: Instead of paying the provider, Medicare often reimburses the patient, who must then settle the balance with the provider.
Example: If a Non-PAR provider charges $183.54 for a service Medicare approves at $168, Medicare reimburses the patient 80% of the Non-PAR rate ($127.68). The patient then pays the remaining difference, resulting in a higher out-of-pocket expense compared to visiting a PAR provider.
For providers, this route allows greater independence in setting fees but can create friction with patients over costs.
Key Differences: PAR vs. Non-PAR Providers
To make the comparison clearer, here’s a quick breakdown:
| Feature | PAR Provider | Non-PAR Provider |
| Agreement | Signs Medicare participation agreement | No agreement; decides case by case |
| Assignment | Must accept assignment on all claims | Can decline assignment |
| Reimbursement Rate | 5% higher | 5% lower |
| Payment Flow | Medicare pays provider directly | Often reimbursed to patient |
| Balance Billing | Not allowed (for covered services) | Allowed, up to 115% of Medicare-approved amount |
| Medigap Claims | Automatically processed | Not automatically transferred |
| Directory Listing | Included in Medicare’s directory | Not listed |
In short: PAR providers prioritize predictability and patient affordability, while Non-PAR providers prioritize flexibility and fee control.
Understanding Medicare Costs for PAR vs Non-PAR
The financial side is where the difference really shows. Let’s use an example service code 90792 (psychiatric diagnostic evaluation) to illustrate:
- Participating Fee Schedule (PAR): $168.00
- Non-PAR Fee Schedule: $159.60 (95% of PAR)
- Limiting Charge (Non-PAR maximum): $183.54
Here’s how reimbursement works:
PAR Provider: Medicare pays 80% ($134.40) directly to the provider. The patient owes $33.60.
Non-PAR Provider: Medicare reimburses the patient 80% of the Non-PAR fee ($127.68). The provider can bill up to the limiting charge ($183.54). The patient must cover the gap, leaving them with $55.86 out-of-pocket.
While Non-PAR providers may collect slightly more, patients usually pay significantly higher costs, which can affect satisfaction and willingness to return.
Benefits of Being a PAR Provider
For many practices, choosing PAR status comes with several advantages:
Predictable Revenue: Payments are tied to Medicare’s fixed fee schedule, making revenue more consistent.
Simplified Billing: Medicare and Medigap insurers handle most of the paperwork, easing administrative burdens.
Patient-Friendly Costs: Lower out-of-pocket expenses make your practice more attractive to Medicare patients.
Greater Visibility: PAR providers are listed in Medicare’s Participating Physician Directory, making it easier for patients to find you.
Smoother Collections: Since Medicare pays providers directly, you spend less time chasing payments.
For providers seeking stability and a steady stream of Medicare patients, PAR participation often proves to be the smarter long-term choice.
Benefits of Being a Non-PAR Provider
While the majority of providers opt for PAR status, some practices find that Non-PAR participation better fits their goals. Here’s why:
Flexibility in Billing: Non-PAR providers can decide claim by claim whether to accept Medicare’s assignment, giving them more control.
Potential for Higher Payments: By billing up to the limiting charge (115% of the Medicare-approved amount), providers can sometimes collect more than the standard PAR fee.
Fee Control: Non-PAR providers can set their own charges and negotiate directly with patients or private insurers.
Appeal to Specific Patient Groups: Some patients value access to specialists or providers who operate outside standard Medicare restrictions, even if it means higher costs.
However, this comes with trade-offs: higher patient out-of-pocket expenses can deter some patients, and providers may face more administrative hurdles in collecting payments.
Which Option is Right for Your Practice?
There’s no universal answer; the choice between PAR vs Non-PAR depends on your practice model, financial strategy, and patient base.
Choose PAR if you value:
- Consistent revenue streams.
- Lower administrative burden.
- Easier patient collections.
- Attracting more Medicare patients by offering lower out-of-pocket costs.
Choose Non-PAR if you value:
- Greater flexibility in billing and fees.
- Willingness to manage direct patient payments.
- Attracting patients who prioritize specialized or independent care.
Many new practices start as PAR to establish patient flow and revenue stability, then re-evaluate whether Non-PAR status could be more profitable once they’ve built a strong patient base.
Changing Your Status (PAR ↔ Non-PAR)
Providers aren’t locked into one status forever. Medicare allows opportunities to change:
New Providers: You have 90 days from the date of your Provider Identification Number (PIN) notification to choose or change your status.
Annual Enrollment Period: After that, you can only change during Medicare’s open enrollment, usually at the end of the year.
Switching to PAR: Submit a participation agreement form to your Medicare carrier or administrative contractor.
Switching to Non-PAR: Submit a formal letter of intent on office letterhead, signed by the authorized representative.
Remember: whichever status you choose during enrollment, you’ll typically remain in that category for the full year.
Summary
Understanding the difference between PAR and Non-PAR providers is critical for both healthcare professionals and patients.
- PAR providers enjoy consistent payments, simplified billing, and attract more patients with lower out-of-pocket costs.
- Non-PAR providers gain flexibility and control but face higher administrative demands and may see lower patient retention.
Ultimately, the right choice depends on your practice’s financial goals, patient base, and tolerance for administrative work. For many providers, PAR status offers stability and growth, while Non-PAR may appeal to those seeking independence and control.
Whether you’re just enrolling or considering a switch, weigh the benefits carefully to align your Medicare participation status with the future of your practice.
