Top 6 Third-Party Medical Billing Companies in the USA (2026)

Third Party Medical Billing Companies in the USA: Side by Side

Third Party Billing vs In-House Medical Billing

The Compliance Rulebook for Third Party Medical Billing

1. 1Patient data and access

   Your biller is a business associate.

   Under HIPAA and the HITECH Act, a billing company that handles patient data is a business associate, so it needs a signed Business Associate Agreement, and the HIPAA Privacy and Security Rules apply to it directly.
2. 2Patient data and access

   Subcontractors need the same terms.

   If your biller uses subcontractors, including teams outside the United States, it must sign business associate agreements with them that carry the same obligations, so ask for the list and where each one stores data.
3. 3Patient data and access

   Breaches have a 60-day clock.

   Under the Breach Notification Rule, affected patients must be told without unreasonable delay and no later than 60 days after a breach is discovered.
4. 4Patient data and access

   The Security Rule update is still a proposal.

   HHS proposed a major Security Rule update in January 2025. As of late 2026, it is not final, and the federal regulatory agenda targets final action around July 2027, so the current rule remains in force.
5. 5Patient data and access

   Excluded people cannot touch your claims.

   Federal programs will not pay for services involving anyone on the OIG List of Excluded Individuals/Entities, so a third party should check its staff and contractors every month.
6. 6Payments and enrollment

   Medicare pays the provider, not the biller.

   Under Medicare’s billing agent rules, even when a billing company is paid a percentage, payments must go to an account the provider controls, so a biller should never ask you to redirect payments to its own account.
7. 7Payments and enrollment

   Enrollment decides where the money goes.

   The CMS-855 enrollment forms and electronic funds transfer setup decide who receives Medicare payments, and your NPI, NPPES record, and tax identification number (TIN) must match across every claim and payer. Changes to any of them should come from you, or with your written approval.
8. 8Payments and enrollment

   Payers need current enrollment.

   Medicare enrollment through PECOS, CAQH for many commercial plans, and each state’s Medicaid portal must be complete and current before claims are filed.
9. 9On the claim

   Codes must match the record.

   Claims use CPT and HCPCS codes for services and ICD-10-CM for diagnoses, and certified coders, credentialed through bodies such as AAPC or AHIMA, should confirm that the note supports both the code and the medical necessity under Medicare’s local and national coverage determinations.
10. 10On the claim

    NCCI edits block bundled codes.

    The CMS National Correct Coding Initiative edits stop certain code pairs from being billed together, and many commercial plans apply similar logic.
11. 11On the claim

    Standard transactions move the claim.

    Claims travel as ASC X12 837 transactions through a clearinghouse, payers answer with 835 remittances (ERA) and 277 status messages, and CAQH CORE operating rules set how those exchanges perform.
12. 12On the claim

    Medicare allows 12 months.

    Medicare claims must be filed within 12 months of the date of service under 42 CFR 424.44. Each region has its own Medicare Administrative Contractor, such as National Government Services in Minnesota, First Coast Service Options in Florida, Novitas in Texas, and Noridian in Washington, and Medicaid and commercial deadlines vary by state and contract.
13. 13After the claim

    Appeals follow set levels.

    Medicare appeals begin with a redetermination by the contractor, then a reconsideration by a qualified independent contractor, before any hearing, and each level has its own deadline, so a biller should track them.
14. 14After the claim

    Overpayments must be returned.

    Medicare and Medicaid require providers to report and return overpayments within 60 days of identifying them, so a biller needs a process for finding and reporting credits.
15. 15After the claim

    The False Claims Act reaches billing errors.

    Knowingly submitting, or failing to correct, a false claim can bring treble damages and per-claim penalties under the False Claims Act, and the Anti-Kickback Statute bars payments in exchange for referrals.
16. 16After the claim

    A compliance program is expected.

    OIG’s General Compliance Program Guidance describes the seven elements of an effective program and explains how small firms can scale it.
17. 17After the claim

    Surprise-bill rules protect patients.

    The No Surprises Act requires good faith estimates for uninsured and self-pay patients and sets protections for certain out-of-network bills.
18. 18After the claim

    Collections have their own rules.

    A billing company that pursues past-due patient balances may fall under the Fair Debt Collection Practices Act and state collection laws.

Where Third Party Billing Breaks

How to Choose a Third Party Medical Billing Company

Signals to Walk Away From

• A percentage quoted on billed charges instead of collections
• Payments routed to the billing company’s own account
• No willingness to sign a Business Associate Agreement or name its subcontractors
• A revenue guarantee with no written terms behind it
• No read-only access to your own claim and payer systems

Compliance Essentials Your Billing Partner Should Already Know

What Does Third Party Medical Billing Cost?

Mistakes Practices Make When Outsourcing Billing

1. 1

   Choosing on rate alone.

   A low percentage can hide extra fees or thin compliance work. Compare what each quote includes, not just the number.
2. 2

   Letting the biller collect into its own account.

   Medicare payments must go to an account you control. Keep that control with every payer.
3. 3

   Skipping the subcontractor list.

   A Business Associate Agreement covers the company you signed with, not the teams behind it. Ask who else sees your records.
4. 4

   Trusting a revenue guarantee without terms.

   A promise of higher revenue means little until the contract defines how it is measured and what happens if it is missed.
5. 5

   Skipping the reference calls.

   Two conversations with practices like yours tell you more than any proposal.

How We Ranked These Companies

Final Picks: Which One Fits You?

• TruCare if you want one record, a published rate, and compliance handled for you.
• EnVisionMD RCM if you want to pay only when claims are paid.
• Modern Medical Billing if you want a provider portal and a free health check.
• Zmed Solutions if you want to choose between fixed, per-claim, and percentage pricing.
• FutureMD Solutions if you want billing, an EHR, and practice management from one vendor.
• Mac MD Billing if you want a fast start and frequent reports.

Frequently Asked Questions

TruCare Service Details

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