CPM Investigating Pacific Healthworks and La Perouse Data Breach
Have you received notice from your Healthcare provider that your private information may have been compromised in a data breach? You may be entitled to compensation from a class action lawsuit.
Cotchett, Pitre & McCarthy is investigating a massive data breach involving highly sensitive Personal Health Information stored by Pacific Healthworks or its sister company, La Perouse. Headquartered in the Southern California city of El Segundo, the healthcare organization provides management services to over 70 operating entities, 1,200 medical clinics, physician groups, and hospitals, servicing over 1.4 million patients annually, according to its website.
On August 9, 2025, the ransomware gang Everest posted on its victim blog that Pacific Healthworks and La Perouse had been breached. The hackers claimed that the billing and personal data of more than 50 clients of Pacific Healthworks and La Perouse were affected. Hundreds of file samples posted by the hackers revealed that breached records include names, social security numbers, dates of birth, address, email, home phone cell phone, gender, race, marital status, health insurance information, Medicare/Medicaid numbers, medical record numbers, physicians’ names, diagnoses, test results, medical images, treatment information, and other patient care information.
While at least 50, and perhaps hundreds of medical providers’ patient and employee records may be included, leaked files included information at least relating to patients and employees of:
Emergent Medical Associates partners with the following facilities:
Centinela Hospital Medical Center
College Medical Center
Corona Regional Medical Center
Encino Hospital Medical Center
Hollywood Presbyterian Medical Center
Huntington Beach Hospital
Kula Hospital
La Palma Intercommunity Hospital
Lanai Community Hospital
Los Alamos Medical Center
Maui Memorial Medical Center
Palomar Medical Center Escondido
Palomar Medical Center Poway
Providence Tarzana Medical Center
San Dimas Community Hospital
Sherman Oaks Hospital
Temecula Valley Hospital
Valley Presbyterian Hospital
West Henderson Hospital.
Benchmark Hospitalists and Intensivists partners with the following hospitals:
California Hospital Medical Center
Corona Regional Medical Center
CHA Hollywood Presbyterian Medical Center
Mercy Medical Center – Merced
Palmdale Regional Medical Center
Palomar Medical Center Escondido
Palomar Medical Center Poway
Providence Saint Joseph Medical Center
Sonoma Valley Hospital
Temecula Valley Hospital
Torrance Memorial Medical Center
UC San Diego Health East Campus
UCI Health – Lakewood
USC Arcadia Hospital.
AnesthesiaWorks partners with the following facilities:
Chino Valley Medical Center
Corona Regional Medical Center
Montclair Hospital Medical Center
Riverside Medical Clinic – Brockton
San Dimas Community Hospital
Southwest Healthcare Inland Valley Hospital
Southwest Healthcare Palmdale Regional Medical Center
Southwest Healthcare Rancho Springs Hospital
Southwest Healthcare Temecula Valley Hospital
Temecula Valley Day Surgery
Valley Presbyterian Hospital (Van Nuys, CA)
West Henderson Hospital.
If you have received care or a bill from any of these providers, then you are likely affected by this data breach.
If your identity theft monitoring service has notified you that your information was included in the breach, you are a patient of one of the identified entities, believe your personal information has been stolen in this breach, or if you have received notification from Pacific Healthworks, La Perouse or your healthcare provider, then you may be entitled to compensation.
Cotchett, Pitre & McCarthy Partner Thomas E. Loeser is a former federal cyber-prosecutor who specializes in consumer privacy cases. If you believe your data may have been compromised, please complete the form below.