[2][3] The merger had been announced on August 14, 2019; the combined company serves 2.4 million members in Massachusetts, Maine, Connecticut, New Hampshire, and Rhode Island.

In 1996 Tufts Health Plan was ranked as a top HMO provider in the United States by Newsweek.

The foundation funds approximately $5 million annually in investments and grants to local non-profits.

[citation needed] In February 2018, Tufts Health Plan entered into a joint venture with Hartford HealthCare, creating CarePartners of Connecticut, which offers Medicare Advantage plans to eligible beneficiaries.

[14] In July 2021, Tufts Health Plan awarded the Metropolitan Boston Housing Partnership with a grant of $170,000.