Palmetto GBA provides claims processing in and beyond the Palmetto State. A subsidiary of Blue Cross & Blue Shield of South Carolina, Palmetto GBA oversees Medicare benefits for people in 45 US states, most of which are in the Southeast and Midwest, as well as the District of Columbia, Puerto Rico, and the US Virgin Islands. Palmetto GBA's services include the processing and payment of health insurance claims, customer service support, training, and payment safeguarding services that seek to eliminate Medicare abuse, fraud, and waste. Palmetto GBA is one of the largest Medicare administration contractors in the US. It has offices in the southeastern and midwestern US.