On September 27, 2017, an employee of Palomar Health unintentionally misdirected an email containing patient-related information to an unintended recipient. The information included patient names, hospital-assigned ID numbers, admission/discharge dates, site of care, and primary payer/health plan names. It did not include SSNs, payment info, or medical records. The recipient deleted the email. Palomar Health notified the California Department of Public Health.