CLEVELAND, Ohio (WOIO) - Laboratory testing company Quest Diagnostics announced Monday that financial and medical information for 11.9 million patients has been breached.
American Medical Collection Agency, a billing collections service contracted by Quest Diagnostics, says an unauthorized user had access to the system containing personal information for millions of patients.
Quest Diagnostics was first notified of the potential data breach on May 14, 2019.
The information at risk includes financial data, Social Security numbers, and medical information.
Patients with work handled by Quest Diagnostics are in the process of being notified about the potential information breach.