Commonwealth Care Alliance (CCA) is in the process of notifying providers that, effective June 28, 2026, CareSource will provide operational support for CCA’s One Care and Senior Care Options (SCO) plans.

According to CCA, this transition is intended to be an operational and administrative change rather than a change to the health plans themselves. CCA stated that members will remain enrolled in their existing plans and that current provider contracts are expected to remain in effect unless providers are otherwise notified through standard contracting communications.

Providers should expect several operational changes beginning June 28, including:

A new provider portal New CareSource provider ID/billing numbers Changes to certain portal workflows Updated fax and mailing addresses Changes to some billing and payment-related processes CCA advises providers to continue following current processes through June 27, 2026. Beginning June 28, providers should follow updated CareSource/CCA instructions.

Providers are encouraged to:

Attend one of the scheduled “Transition Orientation Presentations” Monitor transition communications closely Register for access to the new provider portal Review updates related to claims, authorizations, billing, and payment workflows As with any operational transition, providers may want to monitor closely for any temporary issues related to claims processing, authorizations, provider support, or payment workflows during the implementation period.

CCA Transitioning Operational Support to CareSource Beginning June 28

Providers should prepare for new portals, billing workflows, and operational processes as Commonwealth Care Alliance continues integration efforts following its acquisition by CareSource.

Commonwealth Care Alliance (CCA) is notifying providers that, effective June 28, 2026, operational support for its One Care and Senior Care Options (SCO) plans will transition to CareSource infrastructure and administrative systems.

According to provider communications distributed by CCA, the transition is intended to function as an operational and administrative change rather than a change to the health plans themselves. CCA stated that members are expected to remain enrolled in their current plans and that existing provider contracts are anticipated to remain in effect unless providers are otherwise notified through standard contracting communications.

The transition marks another major step in the broader integration process that began when Ohio-based nonprofit managed care organization CareSource formally completed its acquisition of CCA in April 2025. :contentReference[oaicite:0]{index=0}

What Providers Should Expect

Beginning June 28, providers are expected to transition to several new operational systems and workflows administered through CareSource.

Changes identified by CCA include:

• A new provider portal
• New CareSource provider identification and billing numbers
• Updated fax numbers and mailing addresses
• Changes to authorization, billing, and payment workflows
• Modified claims and payment processing procedures
• Adjustments to provider support and portal functionality

CCA advised providers to continue using current systems and processes through June 27, 2026, and to begin following updated CareSource instructions beginning June 28.

Providers are also being encouraged to attend transition orientation presentations, monitor communications closely, register for portal access, and review implementation guidance related to claims, billing, authorizations, and payment operations.

Background on the CareSource Acquisition

CareSource finalized its acquisition of Commonwealth Care Alliance in April 2025 following a prolonged period of financial instability and regulatory scrutiny involving CCA’s Massachusetts operations. :contentReference.

Public reporting indicated that CCA had experienced substantial solvency challenges, with Massachusetts officials freezing enrollment in portions of its plans and preparing contingency plans in the event the organization could not stabilize operations. :contentReference.

As part of the acquisition, CareSource assumed responsibility for CCA’s operations, including its One Care and SCO products serving nearly 50,000 Massachusetts residents who are dually eligible for Medicare and Medicaid. :contentReference.

CareSource officials described the transaction as a long-term effort to preserve continuity of care while leveraging CareSource’s national Medicaid managed care infrastructure and operational resources. :contentReference.

Since the acquisition closed, both organizations have repeatedly emphasized that CCA’s care model, provider relationships, and member services are expected to continue under the CareSource family of brands. :contentReference.

Additional Changes Expected This Summer

The June 2026 operational transition appears to be part of a larger phased integration effort already underway.

In prior provider discussions with the Home Care Alliance of Massachusetts, CCA indicated it was targeting mid-2026 for broader policy and procedural updates connected to the CareSource acquisition, with additional education, training, and implementation support leading up to operational conversion deadlines.

What This Means for Home Care Providers

For home health, hospice, personal care, and community-based providers participating in CCA’s One Care and SCO networks, the transition is likely to function less as a product redesign and more as a backend administrative conversion tied to CareSource systems and infrastructure.

While continuity of care and provider participation remain central themes in public messaging, providers may still experience temporary administrative challenges common to large-scale payer integrations and system migrations.

Organizations working with CCA members may benefit from proactively reviewing workflow updates, testing portal access early, monitoring claims activity closely, and maintaining documentation related to authorizations and payment submissions during the transition period.