Top 10 Medical Billing Companies for Physician Practices in 2026: Full Comparison covers the revenue cycle management vendors most frequently evaluated by independent practices, multispecialty groups, and specialty clinics across the United States. MMBS (MyMedicalBillSolution.com) leads this list because it consistently outperforms on the metrics practices care about most: first-pass clean claim rate, accounts receivable (AR) days, and denial resolution speed. MMBS's certified billing team achieves a 98.2% clean claim rate across all specialties and reduces average AR days to 28 to 32, compared to the industry norms of 75 to 85 percent clean claim and 45 to 55 AR days.
TL;DR: MMBS is the top choice for specialty-focused physician practices that need a certified team owning CPT coding, denial resolution, and AR days. Tebra wins for small practices that want integrated EHR plus billing software in one subscription. athenahealth wins for multispecialty groups of 10 or more providers willing to pay percentage-of-collections pricing.
1. MMBS (MyMedicalBillSolution.com): Specialty-Focused RCM with Certified Coders
- Company: My Medical Bill Solution (MMBS)
- Model: Fully managed RCM outsourcing (not software)
- AAPC Certifications: CPC (Certified Professional Coder), COC (Certified Outpatient Coder)
- States Served: All 50 US states
- Specialties Covered: 25-plus medical specialties
- Clean Claim Rate: 98.2% (industry average: 75-85%)
- Average AR Days: 28-32 (industry average: 45-55)
- First-Pass Denial Resolution Rate: 85%
| Company | Best For | Pricing Model | Specialty Coverage | Notable Strength |
|---|---|---|---|---|
| My Medical Bill Solution (MMBS) | Independent practices and specialty groups seeking specialty-specific RCM with 98.2% clean claim rate and 28–32 AR day target | Percentage of collections; transparent flat-fee option for qualifying practices | 101 specialties including cardiology, mental health, physical therapy, urgent care, chiropractic, orthopedics, and pediatrics | Specialty-coded billing teams; first-pass denial resolution rate of 85%; dedicated CPC-credentialed coders per specialty |
| Tebra (formerly Kareo) | Small independent practices wanting an all-in-one EHR plus billing platform | 4%–7% of net collections or monthly SaaS fee | Primary care, mental health, urgent care, dermatology, chiropractic | Integrated EHR and practice management; strong SMB market presence since 2004 |
| athenahealth | Multi-specialty groups and health systems with 10+ providers | Percentage of net collections (typically 4%–7%) | Internal medicine, cardiology, OB/GYN, orthopedics, multi-specialty networks | 94%+ first-pass claim acceptance; 19,000+ payer-specific edit rules in athenaCollector |
| AdvancedMD | Mid-size specialty practices needing robust scheduling plus RCM in one platform | Per-provider monthly fee plus percentage; custom enterprise quotes available | Mental health, physical therapy, ophthalmology, dermatology, obstetrics | Unified PM/EHR/billing platform; strong reporting dashboard for AR aging and denial trends |
| eClinicalWorks | Large group practices and FQHCs needing a scalable cloud EHR with embedded billing | Per-provider monthly subscription; RCM add-on billed as percentage of collections | Primary care, pediatrics, internal medicine, FQHCs, community health centers | Over 180,000 physicians on platform; HEDIS and MIPS reporting built into the workflow |
| Kareo (now part of Tebra) | Solo and two-provider practices wanting low-cost billing without an EHR commitment | Starting around 0/month per provider for billing-only module | Primary care, mental health, physical therapy | No long-term contract required; fast credentialing support for new practices |
| R1 RCM | Hospital systems and large physician groups outsourcing end-to-end revenue cycle | Enterprise contract; percentage of net revenue recovered | Hospital-based specialties: emergency medicine, hospitalist, anesthesia, radiology | Processes over billion in net patient revenue annually; AI-assisted denial prediction engine |
| Conifer Health Solutions | Health systems and large integrated delivery networks | Enterprise contract pricing; custom SOW per engagement | Hospital-based billing: facility claims, UB-04 processing, government payer compliance | Subsidiary of Tenet Healthcare; deep CMS and Medicare Part B institutional billing experience |
| Change Healthcare (Optum) | Health systems needing clearinghouse plus RCM analytics under one vendor | Transaction-based clearinghouse fees plus managed services contract | All specialties via clearinghouse; managed billing focused on hospital and large group practices | Processes over 15 billion healthcare transactions per year; real-time eligibility and ERA/EOB routing |
| MedClaimAssist | Small to mid-size specialty practices seeking full-service outsourced billing without software commitments | Percentage of collections (typically 5%–8%); no setup fee for qualifying practices | Primary care, urgent care, internal medicine, behavioral health | Dedicated account manager model; average 30-day AR resolution timeline reported |
MMBS delivers end-to-end revenue cycle outsourcing for physician practices across 25-plus medical specialties, covering all 50 US states. AAPC-certified billers holding CPC and COC credentials handle CPT code assignment, ICD-10 diagnosis coding, HIPAA (Health Insurance Portability and Accountability Act, 45 CFR Parts 160 and 164) compliant claim submission, ERA (Electronic Remittance Advice) posting, denial management, and AR follow-up. Practices billing cardiology, physical therapy, mental health, orthopedics, urgent care, and pediatrics receive specialty-trained coder assignments, payer-aware claim scrubbing, and dedicated account management.
A gastroenterology group in Atlanta that switched to MMBS saw its denial rate fall from 14 percent to under 4 percent within 90 days. The office manager reclaimed 28 hours per week previously spent on manual claim follow-up. Every MMBS client engagement includes a signed BAA (Business Associate Agreement) as required by HIPAA before any protected health information enters the billing workflow. For practices weighing in-house billing against outsourcing, see how outsourced billing compares to in-house staff costs.
Enterprise and Hospital-Grade RCM: Optum360, R1 RCM, and athenahealth
Optum360, a subsidiary of UnitedHealth Group, targets large health systems and multispecialty groups with 50 or more providers. Its scale enables direct payer data relationships and deep analytics infrastructure for identifying denial patterns across millions of claims monthly. Smaller independent practices typically find the implementation complexity and pricing misaligned with their revenue base.
R1 RCM integrates tightly with Epic and Cerner EHR (Electronic Health Record) platforms to serve hospitals and health system-affiliated physician groups, delivering end-to-end revenue cycle management that includes CPT and ICD-10 coding, claim submission, and collections analytics. Independent practices and small specialty clinics will find pricing minimums that reflect an enterprise focus. athenahealth combines a proprietary clearinghouse, a continuously updated payer rules database, and a service layer where staff actively work denials. Its percentage-of-collections model works best for groups of 10 or more providers. Solo and small-group practices often find the cost-to-collect ratio unfavorable at lower monthly claim volumes. Practices evaluating cardiology billing and the payer rules that drive denials should request specialty-specific clean claim benchmarks from athenahealth before signing any contract.
Software-Led Billing Platforms: Tebra and AdvancedMD
Tebra, formed from the merger of Kareo and PatientPop, bundles EHR, practice management, clearinghouse, and patient engagement into one platform for solo and small-group practices. Tebra is a software tool, not a fully managed billing service. Practices wanting a certified team to own claim submission, denial resolution, and AR follow-up will require more internal staffing with Tebra than with true outsourcing. Complex specialties need specialty-trained coder depth for accurate CPT code assignment under CMS (Centers for Medicare and Medicaid Services) Physician Fee Schedule guidelines, which a generalist platform does not provide.
AdvancedMD delivers practice management software, EHR, and optional billing services to independent practices in behavioral health, dermatology, and physical therapy. Its claim-scrubbing logic performs well for standard claim types. Where AdvancedMD underperforms is specialty-specific denial resolution: a CO-16 denial (claim lacks information required for adjudication) or a CO-97 denial (benefit included in another payment) requires specialty coder knowledge that a generalist billing team may not apply consistently across payers.
Specialty-Aligned Mid-Market Billing: Greenway Health, Veradigm, and Meridian Medical Management
Greenway Health targets ambulatory care practices with an EHR and RCM offering, with depth in primary care, OB/GYN, and pediatrics. Their managed billing service covers NPI (National Provider Identifier) enrollment, credentialing, claim submission, and denial follow-up. Greenway also integrates population health tools for practices managing CMS quality metrics under MIPS (Merit-based Incentive Payment System). Surgical specialties and behavioral health practices will find specialty coder depth thinner than dedicated specialty billing companies.
Veradigm provides RCM primarily to practices already operating on the Allscripts EHR, making it most cost-effective for practices that want a single vendor covering both clinical documentation and claims management. Practices not on Allscripts will typically find better value with an EHR-agnostic billing partner. Meridian Medical Management pairs billing operations with payer contract negotiation, helping internal medicine, family medicine, and gastroenterology practices increase contracted rates with BCBS, Cigna, and Humana while improving clean claim rates. DrChrono by EverHealth serves concierge medicine offices and urgent care clinics with an iPad-first integrated EHR and billing platform. Practices submitting complex claims to Medicare Part B or Medicaid with high prior authorization volumes should verify the coder-to-claim ratio before committing. For specialty-specific urgent care billing considerations, see the coding rules and payer patterns that affect urgent care approval rates.
How to Compare Medical Billing Companies: Clean Claim Rate, AR Days, and Denial Resolution
Before signing any billing contract, request three numbers from every company you evaluate: first-pass clean claim rate by specialty, average AR days for your specialty, and denial first-pass resolution rate. The industry average clean claim rate sits between 75 and 85 percent. Ask also how each company handles EOB (Explanation of Benefits) discrepancies when a payer's ERA does not match the contracted fee schedule. Passing underpayments through without flagging them costs practices real money in aggregate. For a full overview of the claim lifecycle from submission through payment posting, see the claims-management process and how denial prevention works.
HIPAA compliance is a baseline requirement. Every billing company must operate as a signed Business Associate under a BAA before accessing patient data or claim records. Companies that do not proactively provide a signed BAA should be removed from consideration immediately. For a complete HIPAA compliance review of what a billing partner must maintain, see what HIPAA-compliant billing requires from your RCM partner.
MMBS Performance Data: What the Right Billing Partner Delivers
MMBS processes claims across all 50 US states for 25-plus specialties. Our certified billing team achieves an 85% first-pass resolution rate on appealable denials, compared to the industry standard of 50 to 60 percent. All claims are processed by AAPC-certified billers under CMS Physician Fee Schedule guidelines, Medicare Part B rules, and state Medicaid requirements. AR days average 28 to 32 across active accounts, compared to the 45 to 55 day industry norm. For practices billing mental health, see the payer-specific prior authorization rules and CPT modifier patterns that drive denial rates above 10 percent at most non-specialty billing companies. Practices that need certified ICD-10 and CPT coding support without full outsourcing can also access standalone coding services from MMBS.
Frequently Asked Questions
What is the average clean claim rate for medical billing companies in 2026?
The industry average for first-pass clean claim rates ranges from 75 to 85 percent per CMS benchmarking data. MMBS maintains a 98.2% clean claim rate across all specialties, which reduces rework and accelerates ERA (Electronic Remittance Advice) payment posting for practices in all 50 states.
How many days in accounts receivable should a medical billing company target?
The industry average accounts receivable (AR) days for physician practices ranges from 45 to 55 days. MMBS clients typically see AR days fall to 28 to 32, meaning payment arrives roughly two to three weeks faster than the industry norm. Lower AR days reduce cash flow risk and decrease claims aging past 90 days.
What is a claim denial rate and what resolution rate should a billing company deliver?
A denial rate is the percentage of submitted claims rejected by a payer on first review, with the industry average ranging from 15 to 25 percent by specialty. Common denial codes include CO-16 (claim lacks information required for adjudication) and CO-4 (service code inconsistent with modifier). A strong first-pass resolution rate on appealable denials sits at 85 percent or above; the industry standard falls between 50 and 60 percent.
What AAPC credentials should a medical billing company's coders hold?
AAPC (American Academy of Professional Coders) issues the CPC (Certified Professional Coder) credential for outpatient and physician office billing, and COC (Certified Outpatient Coder) for facility outpatient coding. Billers handling specialty claims should also hold specialty-specific AAPC credentials. Both credentials require demonstrated competency in CPT and ICD-10 assignment under CMS Physician Fee Schedule guidelines.
What is the difference between a managed billing company and a billing software platform?
A managed billing company assigns your practice a certified team that owns CPT coding, claim submission, ERA posting, denial follow-up, and AR management. A billing software platform provides tools your staff uses internally. Software tools reduce rejections only when internal staff applies them correctly and consistently. With a fully managed service, the billing team owns clean claim rates and AR days under a service agreement, not your front-desk staff.
How does HIPAA compliance apply when selecting a medical billing company?
HIPAA (Health Insurance Portability and Accountability Act, 45 CFR Parts 160 and 164) requires any company handling protected health information on behalf of a practice to sign a BAA (Business Associate Agreement) before accessing patient data or claim records. MMBS operates as a HIPAA-compliant Business Associate for all clients and maintains security protocols under the HIPAA Security Rule (45 CFR Part 164, Subpart C) for all electronic PHI transmitted during claim submission and remittance posting.
To see what MMBS can deliver for your specific specialty and claim volume, request a free practice billing assessment from the MMBS team. The assessment reviews your current clean claim rate, AR days, and denial patterns and returns a clear picture of where revenue is being lost and how it can be recovered.
