Nephrology Associates Medical Group (NAMG) Reports Data Breach Impacting Patient Information On March 10, 2026, Nephrology Associates Medical Group (NAMG), a Southern California-based kidney care provider, disclosed a cybersecurity incident that compromised sensitive patient data. An unauthorized actor accessed NAMG’s network, potentially exfiltrating personally identifiable information (PII) and protected health information (PHI). Affected records may include: - Names - Dates of birth - Social Security numbers - Medical and treatment details - Health insurance and billing information - Credentialing data The exact number of impacted individuals remains undisclosed. Lynch Carpenter, LLP, a national class action law firm, is investigating potential legal claims against NAMG in response to the breach. The firm has previously represented clients in high-profile data privacy cases. NAMG has not provided further details on the breach’s origin, timeline, or remediation efforts. The incident highlights ongoing risks to healthcare data security, particularly in organizations handling sensitive medical records.

Nephrology Associates Medical Group Reports Data Breach Affecting Patient Information Nephrology Associates Medical Group, a California-based healthcare provider serving Riverside and San Bernardino counties, disclosed a data security incident that may have compromised the protected health information (PHI) of certain patients. The breach was first detected on May 20, 2025, when suspicious activity was identified within the organization’s network. Immediate containment measures were implemented, and cybersecurity experts were engaged to investigate. The investigation confirmed that an unauthorized actor had accessed the network and exfiltrated files containing sensitive data. On December 2, 2025, the medical group determined that some of the compromised files included patient PHI. The exposed information varies by individual but may include names, Social Security numbers, dates of birth, medical records, treatment details, health insurance information, billing data, and credentialing information. In response, Nephrology Associates has set up a toll-free call center (844-443-1521) for affected patients, operating Monday through Friday from 6:30 a.m. to 3:30 p.m. PT. The incident underscores ongoing cybersecurity risks in the healthcare sector, particularly for organizations handling sensitive patient data.