"Anthem has said the added heft will work for employers, not against them. A bigger Anthem, it emphasizes, could drive better deals from doctors and hospitals and pass savings onto these customers. In addition, Anthem has argued that there still will be plenty of competition: large employers pit smaller, local insurers' bids against those of large national carriers in regional markets.... But an Aon Hewitt analysis of benefits data for Reuters found that a majority of large employers buy worker health benefits from just one or two insurers."  MORE >>