Palomar Health notified patients of a data breach involving its vendor, PharMerica. An unknown third party accessed PharMerica's systems on March 12-13, 2023. Affected data included names, addresses, dates of birth, Social Security numbers, medications, and health insurance information for patients who received services at Palomar Continuing Care Center or The Villas at Poway between 2001 and 2020. Palomar Health learned of the incident on May 31, 2023, and conducted its own investigation. PharMerica is offering one year of credit and identity theft monitoring.