A practice in Worcester can have one patient covered by a MassHealth ACO, the next by Harvard Pilgrim, a third by Medicare through a contractor in New York and a fourth by the Health Connector. Each one follows its own prior authorization rules, filing limits and claim edits. That mix is why Massachusetts is one of the hardest states in the country for medical billing, and why the right billing partner matters so much here.
The best healthcare billing companies in Massachusetts for 2027 start with Stream RCM for independent and growing practices that want full-cycle revenue cycle management with the option to outsource single services. athenahealth and eClinicalWorks suit practices that want billing tied to a Massachusetts-based EHR company, while Transcure and Credex Healthcare suit practices that want large outsourced teams. P3 Healthcare Solutions, GroupOne Health Source, Unify RCM, Allzone Management Services and MediBillMD round out the list.
Massachusetts Medical Billing Companies at a Glance
| Rank | Company | Model | Best For |
|---|---|---|---|
| 1 | Stream RCM | Full-cycle RCM, or individual services on request | Independent and growing Massachusetts practices |
| 2 | athenahealth | EHR, practice management and billing on one platform | Multi-location groups wanting one platform |
| 3 | eClinicalWorks | EHR with revenue cycle services | Practices already on eClinicalWorks |
| 4 | Transcure | Outsourced RCM with real-time reporting | Practices that want claim-level visibility |
| 5 | Credex Healthcare | Credentialing, licensing and billing | Practices needing credentialing and billing together |
| 6 | P3 Healthcare Solutions | Outsourced billing with coding review | Physician groups in cardiology, neurology and primary care |
| 7 | GroupOne Health Source | Regional billing service | Orthopedic, behavioral health and urgent care practices |
| 8 | Unify RCM | Outsourced billing service | Small practices wanting a dedicated team |
| 9 | Allzone Management Services | Outsourced billing and coding | Practices outsourcing specific RCM tasks |
| 10 | MediBillMD | Full-service medical billing | Practices wanting a complete outsourced package |
Why Is Medical Billing in Massachusetts So Complex?
Massachusetts billing is complex because of its payer mix. The state has near-universal coverage, so almost every patient has insurance, but that coverage is spread across MassHealth programs, several large regional commercial plans, Medicare Advantage and the state exchange. Each payer sets its own rules.
MassHealth and its ACO program
Most MassHealth members are enrolled in accountable care organizations. In July 2026, MassHealth reported 798,606 members in ACO-A plans and 252,164 in ACO-B plans, alongside the PCC Plan, fee-for-service, Senior Care Options, One Care and PACE, according to the MassHealth enrollment snapshot. MassHealth relaunched its ACO program on April 1, 2023, and ACOs averaged more than 1.3 million members that year, as a state report to the legislature notes. A member’s ACO or plan type decides which rules apply to the claim, so billing teams have to check it at every visit.
Massachusetts commercial payers
| Payer | What Billing Teams Should Know |
|---|---|
| Blue Cross Blue Shield of Massachusetts | The largest commercial insurer in the state, with its own prior authorization lists and alternative payment contracts |
| Point32Health (Harvard Pilgrim and Tufts Health Plan) | Formed by the merger of Harvard Pilgrim and Tufts Health Plan; payer IDs and policies can differ by product |
| Mass General Brigham Health Plan | Formerly AllWays Health Partners |
| WellSense Health Plan | Formerly BMC HealthNet Plan; serves MassHealth and commercial members |
| Fallon Health and Health New England | Regional plans with strong presence in central and western Massachusetts |
| Massachusetts Health Connector | The state exchange, where coverage runs through participating commercial carriers |
Medicare in Massachusetts
Original Medicare claims for Massachusetts providers go to National Government Services, the Medicare Administrative Contractor for Jurisdiction K, which also covers New York and the rest of New England. Medicare Advantage plans add their own authorization and network rules on top.
State rules that affect billing
MassHealth requires most claims within 90 days of the date of service, or of the other insurer’s explanation of benefits when MassHealth pays second, under 130 CMR 450.309, a much shorter window than many commercial plans. Patient billing is also changing. In 2026, Governor Maura Healey announced proposed regulations that would bar licensed health care providers, and debt collectors working for them, from reporting medical debt to credit agencies. Practices and their billing partners should watch for the final rule.
| Pro Tip: Check the patient’s MassHealth plan type, ACO and primary care assignment before every visit. A claim sent under the wrong plan in Massachusetts is a denial waiting to happen. |
How We Ranked These Massachusetts Billing Companies
Here is how the list was built. Each company was scored on six criteria using information it publishes or that third-party sources report. Performance figures are labeled as each company’s own claims.
| Criterion | Weight | What We Looked For |
|---|---|---|
| Massachusetts payer knowledge | 25% | MassHealth ACO and MCO rules, Point32Health, BCBSMA and NGS Medicare |
| Full revenue cycle coverage | 20% | Eligibility, coding, claims, posting, denials, A/R and credentialing |
| Service flexibility | 15% | Full-cycle billing or single services, such as credentialing or A/R recovery |
| Fit for independent practices | 15% | Services sized for solo to mid-size groups |
| EHR flexibility | 15% | Works with the practice’s current system |
| Verifiable proof | 10% | Published results, certifications or third-party sources |
The 10 Best Healthcare Billing Companies in Massachusetts
1. Stream RCM: Best Overall for Independent and Growing Massachusetts Practices
Stream RCM is a US medical billing and revenue cycle management company based in Texas that offers full-cycle RCM as its core service and individual services on request. That flexibility ranks it first for Massachusetts practices, many of which need help with one problem first, such as MassHealth denials or a credentialing backlog, before handing over the full revenue cycle.
How Stream RCM handles medical billing in Massachusetts. Massachusetts revenue depends on routing every claim to the right plan under the right rules. Stream RCM’s workflow is built around the state’s payer mix:
| Massachusetts Need | How Stream RCM Handles It |
|---|---|
| MassHealth ACO and plan routing | Plan type, ACO and PCP assignment verified before visits |
| MassHealth 90-day filing limit | Claims submitted and tracked against the 90-day deadline |
| Point32Health, BCBSMA and regional plans | Payer-specific edits and authorization lists maintained per plan |
| Medicare through NGS | Claims, enrollment and revalidation handled for Jurisdiction K |
| Prior authorizations | Requests tracked by payer and deadline, as covered in our prior authorization guide |
| Credentialing with Massachusetts plans | New providers enrolled before their first visit, avoiding the problems described in our guide to credentialing delays |
| Behavioral health billing | Separate MassHealth and carve-out rules handled, as explained in our guide to mental health billing challenges |
| Denials and aging A/R | Denials worked to root cause and A/R followed up before deadlines |
Service options. Practices can outsource the full revenue cycle or start with a single service such as credentialing, denial management or A/R recovery.
Results. In one case study, Stream RCM helped a five-physician practice recover $180,000 in unpaid claims, as described in our $180K recovery case study. [Add Massachusetts-specific results if available]
Pricing. [Add Stream RCM pricing model or starting rate] Industry headline rates for outsourced billing commonly sit around 4% to 7% of collections, as Medical Economics reported.
Best for: Independent and growing Massachusetts practices that want full-cycle billing or targeted help with MassHealth, credentialing or A/R.
Keep in mind: Stream RCM is a billing service, not an EHR vendor. Practices that want software and billing from one company should compare athenahealth and eClinicalWorks.
2. athenahealth: Best for Multi-Location Groups Wanting One Platform
athenahealth is headquartered in Boston and combines electronic health records, practice management and revenue cycle services on its cloud-based athenaOne platform. Its national payer network and automated claim rules suit groups with high claim volume across many payers.
Best for: Multi-location Massachusetts groups that want EHR, scheduling and billing on one platform.
Keep in mind: The billing service is tied to athenaOne, so practices on another EHR face a system change.
3. eClinicalWorks: Best for Practices Already on eClinicalWorks
eClinicalWorks, based in Westborough, offers revenue cycle services alongside its EHR and practice management software. Practices that already use eClinicalWorks can add billing support without changing systems.
Best for: Massachusetts practices running eClinicalWorks.
Keep in mind: Practices on another EHR would need to switch to get the integrated benefit.
4. Transcure: Best for Claim-Level Visibility
Transcure offers medical billing services in Massachusetts with real-time dashboards for denials by payer, CPT-level collections and aging reports, and it covers more than 50 specialties.
Best for: Practices that want detailed, frequent reporting.
Keep in mind: Smaller practices should confirm how support scales for lower claim volume.
5. Credex Healthcare: Best for Credentialing and Billing Together
Credex Healthcare, based in Jacksonville, Florida, combines credentialing, licensing and billing. In its Massachusetts billing guide, it reports a clean claim rate above 97% and A/R days below 35 for its Massachusetts clients, which are its own figures.
Best for: Practices that need provider credentialing and billing from one vendor.
Keep in mind: Credex’s guide includes a section about Maryland payers under a Massachusetts heading; ask for Massachusetts-specific references.
6. P3 Healthcare Solutions: Best for Cardiology, Neurology and Primary Care Groups
P3 Healthcare Solutions provides outsourced billing with combined AI-assisted and human coding review. Third-party summaries describe experience with MassHealth managed care plans for physician groups.
Best for: Physician groups in cardiology, neurology and primary care.
Keep in mind: Ask for current Massachusetts client references.
7. GroupOne Health Source: Best for Orthopedic, Behavioral and Urgent Care Practices
GroupOne Health Source is a billing service that third-party summaries describe as serving New England groups for more than 20 years, with a focus on orthopedics, behavioral health and urgent care.
Best for: Massachusetts practices in high-denial specialties.
Keep in mind: Confirm current service areas and specialties directly.
8. Unify RCM: Best for Small Practices
Unify RCM offers medical billing services in Massachusetts for small and mid-size practices, with dedicated billing teams.
Best for: Small Massachusetts practices wanting a dedicated team.
Keep in mind: Request sample reports before signing.
9. Allzone Management Services: Best for Outsourcing Specific Tasks
Allzone offers medical billing services in Massachusetts, including billing, coding and A/R follow-up, which practices can outsource in parts.
Best for: Practices that want to outsource specific RCM tasks.
Keep in mind: Clarify who owns each task when billing is split between Allzone and the practice.
10. MediBillMD: Best Complete Outsourced Package
MediBillMD provides full-service medical billing and publishes a guide to medical billing companies in Massachusetts.
Best for: Practices that want a complete outsourced billing package.
Keep in mind: Ask about account management and escalation paths.
How to Choose a Medical Billing Company in Massachusetts
| Question | A Strong Answer Includes |
|---|---|
| How do you handle MassHealth ACO and plan routing? | Checks of plan type, ACO and PCP assignment before visits |
| How do you track MassHealth’s 90-day filing limit? | A deadline report by claim, not just a monthly A/R summary |
| Which Massachusetts payers do you bill most? | Experience with BCBSMA, Point32Health, MGB Health Plan, WellSense and Fallon |
| Can we outsource one service first? | Options such as credentialing, denial management or A/R recovery on their own |
| How will you adapt to Massachusetts’ medical debt rules? | A plan for patient statements and collection agency contracts |
| What is your pricing? | A written rate with denial work, A/R and credentialing scope spelled out |
How Much Do Medical Billing Services Cost in Massachusetts?
Most Massachusetts billing companies charge a percentage of collections. Headline rates for outsourced billing commonly sit around 4% to 7%, according to Medical Economics, with specialty, claim volume and services included moving the rate up or down. Compare what each rate applies to, since a low percentage that excludes denials or patient billing can cost more in lost revenue.
Frequently Asked Questions
What are the best healthcare billing companies in Massachusetts?
This guide ranks Stream RCM, athenahealth, eClinicalWorks, Transcure, Credex Healthcare, P3 Healthcare Solutions, GroupOne Health Source, Unify RCM, Allzone Management Services and MediBillMD, based on Massachusetts payer knowledge, revenue cycle coverage, service flexibility, fit for independent practices, EHR flexibility and verifiable proof.
Does a billing company need to be located in Massachusetts?
No. What matters is experience with Massachusetts payers, especially MassHealth ACOs, Point32Health and BCBSMA, and with Medicare through National Government Services. Many strong billing companies serve Massachusetts practices remotely.
What is the timely filing limit for MassHealth?
National Government Services, the Medicare Administrative Contractor for Jurisdiction K, processes Original Medicare claims for Massachusetts providers.
Who processes Medicare claims in Massachusetts?
National Government Services, the Medicare Administrative Contractor for Jurisdiction K, processes Original Medicare claims for Massachusetts providers.
How much does medical billing cost in Massachusetts?
Most companies charge a percentage of collections, commonly around 4% to 7%, depending on specialty, volume and services included. Ask what the rate covers before comparing.
Can a Massachusetts practice outsource only part of its billing?
Yes. Many companies, including Stream RCM, offer individual services such as credentialing, denial management or A/R recovery, so a practice can start with its biggest problem.
