In 2025, Medicare CompareUSA experienced a data breach affecting individuals whose data they handled on behalf of UnitedHealthcare. Notifications to affected individuals began on June 27, 2025.
The breach exposed names, Social Security numbers, dates of birth, addresses, government IDs, medical information, and financial information. At least 1,258 Washington residents and 1 Massachusetts resident were affected, totaling at least 1,259 individuals. The exact total number of affected individuals beyond these identified states has not been publicly provided.
This incident is distinct from the larger Change Healthcare breach involving UnitedHealth’s technology unit. Further details may emerge as investigations continue, and additional notifications may be delayed.