Top 10 Clearinghouses in Medical Billing: What They Do and How to Pick the Right One

Every medical claim passes through a clearinghouse before reaching an insurance payer. These clearinghouses check format and send your claims correctly. According to CMS, over 90% of all Medicare Part B claims are now submitted electronically, and the vast majority flow through clearinghouses. 

The one you choose affects your denial rate, revenue, and how fast you get paid. Not all clearinghouses are equal; they differ in payer connections, claim validation, EHR integration, reporting, and cost. This guide reviews the top 10 clearinghouses, helping you understand their features and pick the right one for your practice.

What Does a Medical Billing Clearinghouse Actually Do?

Before comparing the top 10 clearinghouses in medical billing, it’s worth understanding exactly what they do, because practices often underestimate how much of their revenue cycle depends on clearinghouse performance.

Electronic Data Interchange (EDI) Translation

Healthcare payers use different electronic formats. CMS requires HIPAA-standard EDI transactions, primarily the 837P (professional claims) and 837I (institutional claims) formats. Clearinghouses translate your practice’s claims into the correct format for each payer automatically.

Claim Scrubbing and Validation

Before forwarding a claim to a payer, the clearinghouse runs it through hundreds of validation checks, verifying CPT/ICD-10 code combinations, patient demographics, provider NPI enrollment, modifier appropriateness, and payer-specific edits. Claims that fail these checks are returned to the practice as rejections before they ever reach the payer.

Payer Connectivity and Routing

Clearinghouses maintain EDI connections with hundreds or thousands of payers, including Medicare, all state Medicaid programs, and commercial insurers. The breadth of a clearinghouse’s payer network determines how many of your claims can be submitted electronically vs. on paper.

Real-Time Eligibility Verification (270/271)

Most leading clearinghouses also process HIPAA 270/271 eligibility transactions, allowing practices to verify patient insurance coverage in real time before delivering services. This dramatically reduces eligibility-related claim denials.

Reporting and Remittance (835 ERA)

Clearinghouses receive electronic remittance advice (ERA, 835 format) from payers and route it back to the practice’s billing system. This enables automated payment posting and reconciliation, replacing manual EOB entry.

The Top 10 Clearinghouses in Medical Billing: Detailed Profiles

Choosing the right clearinghouse can make a big difference in your practice’s revenue, claim accuracy, and workflow efficiency. Here is the breakdown of the top 10 clearinghouses in medical billing so you can make an informed choice for your practice.

1. Availity

Availity is the largest real-time health information network in the U.S., and uniquely, it offers its core payer portal and eligibility verification tools free to providers. It was created as a joint venture between major health plans specifically to improve electronic connectivity.

Availity connects with over 2,000 payers and processes more than 4 billion transactions per year. For practices that want free eligibility verification, real-time claim status, and a reliable portal for commercial payer interactions, Availity is often the starting point.

• Best for: Practices of all sizes needing multi-payer eligibility and claim status tools without per-transaction fees
• Limitation: Full clearinghouse functionality with claim scrubbing requires a paid subscription or integration with a third-party billing platform

2. Change Healthcare

Change Healthcare is one of the largest health technology companies in the U.S., processing approximately one-third of all U.S. healthcare transactions. Their clearinghouse network connects to over 900,000 physicians, 33,000 pharmacies, and 600+ payers.

• Best for: Large health systems and hospitals needing deep payer connectivity and enterprise analytics
• Limitation: The 2024 cyberattack exposed systemic concentration risk; practices relying solely on Change Healthcare experienced significant billing disruptions

3. Trizetto (Cognizant)

Trizetto, now part of Cognizant, offers the FACETS and QicLink platforms, among the most widely deployed claims processing systems in the country. Their clearinghouse connects to 1,400+ payers and is particularly strong for high-volume multi-specialty groups.

• Best for: Large medical groups and managed care organizations needing scalable, enterprise-grade claim management
• Limitation: Implementation complexity and cost make it less accessible for small practices

4. Waystar

Waystar is a modern, cloud-based revenue cycle platform that absorbed ZirMed and several other clearinghouses. It uses machine learning and AI to predict and prevent claim denials before submission, a significant differentiator in the current market.

• Best for: Mid-to-large physician groups focused on denial prevention and revenue cycle analytics
• Limitation: Higher price point than legacy clearinghouses; best value realized by mid-size and larger practices

5. Office Ally

Office Ally stands out among the clearinghouses in the medical billing space for offering a genuinely free claim submission service. They connect to over 5,000 payers and have become particularly popular with small practices, solo providers, and billing companies looking for a cost-effective gateway.

• Best for: Small practices, new providers, and billing companies managing multiple small clients
• Limitation: Claim scrubbing and analytics are more basic than enterprise platforms; customer support response times can vary

6. Apex EDI (now part of Stedi)

Apex EDI, now integrated into the Stedi platform, offers a modern API-first approach to clearinghouse services. It’s particularly well-suited for practices and billing companies that want to build custom integrations or automate their billing workflows programmatically.

• Best for: Tech-forward practices, billing companies, and health tech startups needing flexible API access
• Limitation: Requires technical capability to leverage the full API; less plug-and-play than legacy clearinghouses

7. Kareo (now Tebra)

Kareo, now rebranded as Tebra after merging with PatientPop, offers an all-in-one platform that combines EHR, practice management, patient engagement, and a built-in clearinghouse. It’s especially popular among independent practices and behavioral health providers.

• Best for: Small to mid-size independent practices and behavioral health groups wanting an all-in-one solution
• Limitation: Built-in clearinghouse is optimized for the Tebra ecosystem; payer network breadth is narrower than standalone clearinghouses

8. Rectangle Health (ClaimLogic)

Rectangle Health acquired ClaimLogic to offer integrated payment and clearinghouse services, combining front-end patient payment collection with back-end claim processing. Their strength is in the patient payment experience alongside traditional EDI functionality.

• Best for: Practices looking to integrate patient payment collection with their claim workflow
• Limitation: Primarily focused on the patient payment side; claim scrubbing tools are less robust than enterprise platforms

9. Optum (OptumInsight)

Optum, a subsidiary of UnitedHealth Group, operates a major clearinghouse through its OptumInsight division. Their iEDI and Intelligent EDI platforms are particularly strong for practices with significant UnitedHealthcare and Optum-affiliated plan volumes.

• Best for: Practices with a large UnitedHealthcare, Optum, and Medicare Advantage payer mix
• Limitation: Payer network can feel optimized toward UHC-affiliated plans; mixed reviews on commercial payer breadth

10. Claim. MD

Claim.MD is a direct-to-payer clearinghouse with a growing reputation among billing companies and independent practices. It offers real-time claim status, eligibility verification, and ERA processing at competitive price points.

• Best for: Billing companies, behavioral health practices, and small-to-mid practices looking for value and simplicity
• Limitation: Smaller payer network than the enterprise platforms; best combined with a secondary clearinghouse for maximum payer reach

Table: The Top 10 Clearinghouses in Medical Billing

How to Choose the Right Clearinghouse for Your Practice

With so many options among the top 10 clearinghouses in medical billing, how do you choose? The decision should be driven by your specific practice profile, not brand recognition.

Evaluate Your Payer Mix

Start with your top 10 payers by claim volume. Verify that any clearinghouse you consider has direct EDI connections to all of them. Indirect connections route claims through secondary clearinghouses, adding processing time and potential failure points.

Assess Your EHR and PM Compatibility

Integration matters. A clearinghouse that doesn’t integrate cleanly with your EHR or practice management system forces manual workarounds, which introduce errors and slow your entire billing workflow.

Examine Claim Scrubbing Depth

Ask specific questions: How many edits does the scrubber apply? Are payer-specific edits included, or only standard HIPAA edits? What is the average first-pass acceptance rate for similar practices? Request references from practices in your specialty.

Consider Cost Structure

Clearinghouse pricing varies widely. Some charge per-transaction, some per-provider monthly, and some (like Office Ally’s basic tier) offer free access. For high-volume practices, per-transaction fees can add up significantly. Calculate your expected monthly transaction volume and model costs carefully.

Review Reporting and Transparency

The best clearinghouses give you real-time visibility into claim status, rejection reasons, payer response times, and ERA receipt. Detailed reporting lets your billing team identify and address problems quickly, before claims age.

Is Your Practice Leaving Revenue on the Table? Let’s Fix That.

New York healthcare providers trust NYC Medical Billing for end-to-end revenue cycle management, from claim submission and clearinghouse optimization to denial management, AR follow-up, and compliance auditing.

Whether you’re struggling with claim rejections, high denial rates, slow collections, or clearinghouse optimization and electronic claim management billing challenges, our team of certified billers and coders is ready to step in.

Our services include: clearinghouse setup and optimization, electronic claim submission, prior authorization management, denial appeals, credentialing support, payment posting, and AR recovery.

Book a free billing consultation today, and start collecting every dollar your practice has earned.

Frequently Asked Questions

How Do Clearinghouses Reduce Claim Denials?

Advanced scrubbers catch 95%+ of payer edits pre-submission, cutting denials by 40%. Real-time eligibility verifies coverage, preventing 20% of rejections before services are rendered. 

What’s The Setup Time For New Clearinghouses?

Most integrate within 2-4 weeks via API or EHR connectors. Test runs with 100 sample claims ensure 98% first-pass rates before full production rollout. 

Can Small Practices Use Enterprise Clearinghouses?

Yes, Availity and Waystar offer scaled pricing; start with basic eligibility for free. Volume discounts kick in above 1,000 claims monthly for cost efficiency. 

How To Test Clearinghouse Payer Connectivity?

Submit 50 test claims to top payers; track acceptance rates and turnaround. Aim for <2% rejections, switch if connectivity fails 5%+ of transactions. 

Do Clearinghouses Handle Era Auto-Posting?

Top platforms like Change and Trizetto auto-post 99% of 835 ERAs, slashing manual entry by 80%. Reconciliation dashboards flag posting discrepancies instantly.