Quest Diagnostics Data Breach Impacting 11.9 Million Patients – Lawsuit Investigation

Sauder Schelkopf is currently investigating a lawsuit against Quest Diagnostics related to its announcement of a data breach impacting approximately 12 million patients. According to news reports, Quest warned that nearly 12 million of its customers may have had personal, financial and medical information breached due to an issue with one of its vendors.

In a filing with securities regulators, Quest allegedly stated that it was notified that between August 1, 2018 and March 30, 2019, someone had unauthorized access to the systems of AMCA, a billing collections vendor. According to the filing by Quest, the information on AMCA’s affected system included financial information, such as credit card numbers and bank account information, medical information and other personal information such as social security numbers.

If you were impacted by this data breach and/or received a letter or other communication from Quest regarding this data breach, please contact the lawyers at Sauder Schelkopf by filling out the form to the right.

Sauder Schelkopf ( is a leading national class action law firm that advances the interests of its clients by recovering the money they have lost, and obtaining the relief to which they are entitled. The lawyers at Sauder Schelkopf have recovered millions of dollars on behalf of consumers and have earned their reputation as skilled and aggressive veteran litigators.

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