One Medical Group reports hacking incident affecting 153,174 patients
One Medical Group, Inc., a healthcare provider in California, filed a breach report with HHS OCR on July 17, 2026. The filing describes a hacking/IT incident that compromised the protected health information of 153,174 individuals. The breached data was located on a network server. This submission date marks when the report was sent to regulators, not necessarily when the breach occurred or was discovered. Healthcare administrators should monitor their own vendor contracts and security protocols, as large-scale provider breaches often signal broader industry threats. While this specific incident involves One Medical Group, the scale highlights the ongoing risk of network server vulnerabilities in healthcare IT infrastructure.