La Perouse LLC, a medical billing and coding management company, suffered a ransomware attack executed by the Everest ransomware group in August 2025. The breach resulted in the theft of personally identifiable information (PII) and protected health information (PHI), including names, addresses, Social Security numbers, driver’s license details, medical records, health insurance data, and payment information. The attack compromised internal documents, billing records, and confidential data, affecting thousands of patients across multiple medical practices. The exposed data poses severe risks, including identity theft, financial fraud, and unauthorized disclosure of sensitive health details. The company reported the incident to the U.S. Department of Health and Human Services (HHS) but has not issued a public statement. Affected individuals and medical practices are being notified via mail, with investigations ongoing to determine the full scope of the breach.