The Department of Managed Health care informed individuals of a hack concerning their personal information. Health plans regulated by the department of Managed health care (DMHC) are required to provide the DMHC periodically with current rosters of the medical providers the health plans contract with. These plans are not supposed to include confidential or personal information in the rosters because these rosters are generally public documents.The DMHC discovered that blue shield of ca had inadvertently included provider Social Security numbers in the rosters Blue shield provided to the DMHC in February, march and April, 2013. blue shield neglected to inform the DMHC that the information was confidential or alert the DMHC that a mistake had been made on the documentation.The information included social surety numbers, providers' names, business addresses, concern telephone numbers, medical groups, and practice areas.For those affected blue shield is offer you a free-one-year membership in Experian's ProtectMyID Alert. For those with questions they canful telephone 1-877-371-7902.