Medical Billing Company in Massachusetts | MassHealth ACO Expertise
Mediknocx is a medical billing company serving healthcare practices across Massachusetts, from Boston to Worcester. Our team manages insurance eligibility verification, medical coding, claims submission, payment posting, and denial management, so physicians and clinics can focus on patient care instead of billing administration. We navigate MassHealth's three ACO models and BCBSMA's dominant commercial position.

HIPAA Compliant
Faster Payments & Fewer Denials
Higher Reimbursement
Massachusetts-Based Billing Experts
MassHealth's Three-Model ACO System and BCBSMA's Rate Rejection
MassHealth delivers care through Accountable Care Organizations under a structure with three distinct models. The Accountable Care Partnership Plan pairs an ACO exclusively with one MCO. The Primary Care ACO offers only a primary care network, with MassHealth paying other providers directly on a fee-for-service basis and behavioral health delivered through the Massachusetts Behavioral Health Partnership. The MCO-Administered Model allows non-exclusive relationships, so an ACO can contract with more than one MCO. As of 2023, more than 1.3 million members, over half of MassHealth's total enrollment, were in one of 17 ACOs, many branded around specific hospital systems like Mass General Brigham and Mercy Health.
On the commercial side, Blue Cross Blue Shield of Massachusetts is the state's dominant, not-for-profit insurer with 2.8 million policyholders, more than any other carrier in the state. Massachusetts also regulates its individual and small-group markets together as a single "Merged Market" under state law, a structure most states don't use. That regulatory oversight has real teeth: for the 2024-2025 filing cycle, the Division of Insurance rejected BCBSMA's requested 12.9 percent rate increase, along with WellSense Health Plan's 16.2 percent request, as excessive, and directed both carriers to refile at lower rates.

One of the Top Medical Billing Companies in Massachusetts
Mediknocx brings more than 10 years of medical billing experience to Massachusetts practices, backed by a national team of 300+ billing experts serving 500+ healthcare providers across 75+ specialties from 4 offices nationwide.
Years of Experience
Billing Experts
Healthcare Providers
Specialties Served
Offices Nationwide

What Massachusetts Providers Get With Mediknocx
HIPAA-compliant billing workflows built for healthcare, not adapted from generic accounting software
Certified medical billing and coding specialists who track MassHealth's three ACO models and behavioral health carve-out
Transparent reporting, so you always know exactly how your BCBSMA and MassHealth ACO claims are performing
A dedicated account manager who knows your practice, not a rotating support queue
Our Medical Billing Services in Massachusetts
Mediknocx provides the full range of billing services to Massachusetts practices:
Specialties We Support in Massachusetts
Mediknocx bills for 45+ medical specialties in Massachusetts, including Cardiology, Orthopedics, Family Practice, Internal Medicine, Behavioral Health, and Pain Management.
Areas We Service
Mediknocx serves healthcare practices throughout Massachusetts, including Boston, Worcester, Springfield, Cambridge, and Lowell, along with communities statewide. Boston is the state capital and largest city, anchoring Greater Boston's dense concentration of academic medical centers and teaching hospitals.
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Frequently Asked Questions
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Strong Nationwide Presence
With presence in 50 states, we are serving healthcare practitioners with exceptional medical billing services.


