Beginning Jan. 1, 2026, Tufts Health One Care will become a Dual Eligible Special Needs Plan (D-SNP). 

In 2022, the Centers for Medicare and Medicaid Services (CMS) announced the decision to convert all Medicare-Medicaid Plans, like Tufts Health One Care, to D-SNPs. 

The transition aims to streamline care coordination and improve the health care experience for individuals who are dual-eligible for Medicare and Medicaid while preserving core features such as coordinated benefits and access to care management via our collaboration with Cityblock Health.

Seamless transition

If you currently participate in the Tufts Health One Care network, there’s nothing for you to do. Earlier this year, you were mailed an update to your participating provider agreement, which takes effect on Jan. 1, 2026. The amendment notes any updates to provider obligations. In addition, we will be updating the Tufts Health Public Plans Provider Manual and our Tufts Health One Care training with information related to the D-SNP.

Members will be seamlessly transitioned to the updated product. No action is necessary on their part: they don’t need to re-enroll with the plan or MassHealth; they just need to continue to be eligible for MassHealth (Medicaid) and Medicare. They will be automatically enrolled and were mailed new member ID cards, which include a new member ID number (see sample ID card, front and back, below).

 

Any active prior authorizations will still be valid. 

Members will continue to receive care management services through Cityblock Health, which offers members a dedicated team that helps develop personalized care plans, connect them with supports and services, and coordinate care delivery, including behavioral health services.