Nationally-recognized as one of the best health plans in the country, Tufts Health Plan serves more than a million residents in its market of Massachusetts, New Hampshire and Rhode Island. It consistently earns 5 out of 5 stars for its HMO and offerings — and has the only 5-star rating of a PPO plan in the country. When it came to selecting a brain fitness offering for its members, it sought out the best of the best — BrainHQ.