Blue Cross Blue Shield of Massachusetts | 43,836 followers on LinkedIn. Bring your true colors to Blue! | Blue Cross Blue Shield of Massachusetts is a community-focused, tax-paying, not-for-profit health plan headquartered in Boston. We have been a market leader for over 80 years, and are consistently ranked among the nation's best health plans. Our daily efforts are dedicated to effectively serving our 3 million members, and consistently offering security, stability, and peace of mind to both our members and associates.