CareFirst Blue Cross Blue Shield of Maryland is the largest health insurer in the Mid-Atlantic region, serving 3.3 million members in Maryland, Northern Virginia and Washington D.C. CareFirst of Maryland aims “to provide health benefit services of value to customers across the region comprised of Maryland and the National Capital Area.” CareFirst has received seven consecutive National Brand Excellence awards from the Blue Cross and Blue Shield Association, recognizing its customer service, financial strength, membership growth and promotion of the Blue name.