MassHealth ACOs, MCOs and MBHP: Behavioral Health Routing
By George Ruan • October 9, 2026
As of October 9, 2026. Use the official MassHealth ACO and MCO list linked below, then check the member’s date-of-service enrollment. The MassHealth program name alone does not identify the behavioral health claim destination. Current MassHealth ACO and MCO list MassHealth eligibility verification instructions
Official MassHealth ACO and MCO list
Route map based on the state eligibility instructions and MBHP’s August 2026 town hall. Verify the actual plan, service and contract before billing.
MassHealth eligibility instructions MBHP August 2026 town hall
Sections
The current ACO and MCO list
The state list names the following partnership ACO plans. Check the linked list again when setting up a new payer route; this article is a dated snapshot rather than a member-enrollment determination. Current MassHealth ACO and MCO list
Fallon Health – Atrius Health Care Collaborative
Berkshire Fallon Health Collaborative
Fallon 365 Care
Be Healthy Partnership Plan
WellSense Beth Israel Lahey Health (BILH) Performance Network ACO
WellSense Community Alliance
WellSense Boston Children’s ACO
East Boston Neighborhood Health WellSense Alliance
WellSense Mercy Alliance
WellSense Signature Alliance
WellSense Southcoast Alliance
WellSense Care Alliance
Mass General Brigham Health Plan with Mass General Brigham ACO
Tufts Health Together with Cambridge Health Alliance (CHA)
Tufts Health Together with UMass Memorial Health
Under Primary Care ACOs, the list names Community Care Cooperative (C3) and Revere Health Choice. Under MCOs, it names WellSense Essential MCO. SCO, One Care and PACE coverage should be investigated through their own program and plan resources rather than this ACO/MCO list. Current MassHealth ACO and MCO list
When does behavioral health route to MBHP
MBHP is part of Carelon Behavioral Health. Its August 2026 town hall identifies MBHP behavioral health coverage for the PCC Plan, the Primary Care ACOs C3 and Revere Health Choice, and Health New England’s BeHealthy Partnership. BeHealthy is therefore an important partnership-ACO exception to a simple “ACO means no MBHP” rule. MBHP August 6, 2026 town hall
Why Carelon and MBHP are not interchangeable billing labels
The same presentation lists separate contracts, direct-entry portals and electronic payer IDs: MBHP BHOMA and Carelon BHOVO. Do not select an ID just from the parent-company name. The August FAQ says other Carelon plan billing varies by contract and line of business. MBHP August 6, 2026 town hall MBHP August 6, 2026 town hall FAQ
Recommended routing workflow
Verify coverage for the service date. Read the POSC eligibility response, including the member’s managed-care enrollment. Save the dated result in your normal secure billing record. MassHealth eligibility verification instructions
Confirm the behavioral health administrator. For a plan not identified above, ask that plan where the specific service is administered. Match the answer to the member’s coverage and your contract; do not assume every ACO uses MBHP.
Check the claim route before sending. Confirm the payer ID or direct-entry portal with the actual administrator and your clearinghouse. Keep direct MassHealth, MBHP and other plan billing configurations distinct.
Recommended checks when coverage changes
Compare the prior service-date result with the new one. Ask which administrator owns services before and after the change, whether authorizations transfer, and which contract covers the clinician. Resolve routing questions before copying a previous claim template.
Related MassHealth guides
Get help with MassHealth billing setup
Bomi can help your therapy practice organize payer enrollment, portal permissions, eligibility checks and claims follow-up. The practice’s authorized administrator handles account permissions and approvals. See Bomi billing support.
Frequently Asked Questions
Do all MassHealth ACO members use MBHP for therapy?
No. Confirm the exact plan and behavioral health administrator. MBHP’s August 2026 guidance specifically identifies PCC, C3, Revere and HNE BeHealthy coverage.
Is MBHP part of Carelon?
Yes. MBHP identifies Carelon Behavioral Health as its parent, while distinguishing MBHP billing from other Carelon plan billing.
Where should I check the current MassHealth plan names?
Use the official ACO/MCO list linked above and verify the member’s actual service-date enrollment in POSC.
Sources
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