This page, One Care plans, is offered by

One Care plans

If you join One Care, you will have one plan, one card, and one person to help you with all of your care needs.

There are two One Care plans, Commonwealth Care Alliance and Tufts Health Unify. Click on the individual plan links to learn more about each one.

Commonwealth Care Alliance

Commonwealth Care Alliance

One Care Member Materials  I  Find a Provider

Customer Service: 7 days a week, from 8 a.m. to 8 p.m.
Phone: 1-866-610-2273 
MassRelay (TRS): 711 (for people who are deaf, hard of hearing, or speech disabled)

Available in the following counties: Barnstable, Bristol, Essex, Franklin, Hampden, Hampshire, Middlesex, Norfolk, Plymouth*, Suffolk, and Worcester.

*Commonwealth Care Alliance’s service area includes all of Plymouth County except for the towns of Lakeville, Marion, Mattapoisett, and Wareham.

Tufts Health Unify

Tufts Health Unify

One Care Member Materials  I  Find a Provider

Customer Service: 7 days a week, from 8 a.m. to 8 p.m.
Phone: 1-855-393-3154
TTY: 1-888-391-5535 (for people who are deaf, hard of hearing, or speech disabled)

Available in the following counties: Middlesex, Suffolk and Worcester.

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