Madera Community Hospital Discloses 2025 Data Breach Affecting Patient Information
Madera Community Hospital, a nonprofit facility in Madera, California, reported a data breach involving unauthorized access to its computer network over two days in late May 2025. The incident was detected on May 29, 2025, when the hospital identified suspicious activity and initiated an investigation with third-party cybersecurity experts.
Forensic analysis confirmed that an unauthorized third party accessed the hospital’s systems on May 28 and 29, 2025. While the exact number of affected individuals was not disclosed, the breach potentially exposed personal and protected health information. A specialized data-review firm was engaged to analyze compromised files, with results finalized in April 2026. The hospital then worked to verify contact details before notifying impacted individuals.
The breach was formally reported to the California Attorney General on July 14, 2026. In response, Madera Community Hospital offered affected individuals complimentary access to Experian’s IdentityWorks identity-theft-protection service, with separate enrollment options for adults and minors. A dedicated response line (844-958-8906) was also established for inquiries related to the incident. The specific types of data exposed were not publicly disclosed.
Source: https://www.claimdepot.com/data-breach/madera-community-hospital-2026
Madera Community Hospital cybersecurity rating report: https://www.rankiteo.com/company/madera-community-hospital
"id": "MAD1784312959",
"linkid": "madera-community-hospital",
"type": "Breach",
"date": "5/2025",
"severity": "100",
"impact": "7",
"explanation": "Attack that could injure or kill people"{'affected_entities': [{'industry': 'Healthcare',
'location': 'Madera, California, USA',
'name': 'Madera Community Hospital',
'type': 'Nonprofit Hospital'}],
'customer_advisories': 'Notification letters sent to affected individuals, '
'identity theft protection services offered',
'data_breach': {'personally_identifiable_information': 'Yes',
'sensitivity_of_data': 'High',
'type_of_data_compromised': ['Personal information',
'Protected health information']},
'date_detected': '2025-05-29',
'date_publicly_disclosed': '2026-07-14',
'description': 'Madera Community Hospital reported a data breach involving '
'unauthorized access to its computer network over two days in '
'late May 2025. The incident potentially exposed personal and '
'protected health information of patients.',
'impact': {'data_compromised': 'Personal and protected health information',
'identity_theft_risk': 'High',
'systems_affected': 'Computer network'},
'investigation_status': 'Completed',
'references': [{'source': 'California Attorney General'}],
'regulatory_compliance': {'regulatory_notifications': 'Reported to California '
'Attorney General'},
'response': {'communication_strategy': 'Notification to affected individuals, '
'dedicated response line, identity '
'theft protection services',
'incident_response_plan_activated': 'Yes',
'third_party_assistance': 'Cybersecurity experts, specialized '
'data-review firm'},
'threat_actor': 'Unauthorized third party',
'title': 'Madera Community Hospital Data Breach',
'type': 'Data Breach'}