Group Health, Inc., an EmblemHealth company, disclosed an unintentional data breach occurring between October 3 and 14, 2016. Medicare Prescription Drug Plan Evidence of Coverage documents were mailed with members' Health Insurance Claim Numbers (HICN) and names/addresses inadvertently printed on external mailing labels. No health or financial data was disclosed. Affected individuals were offered 24 months of identity protection and credit monitoring through AllClear ID.