Was I affected by a McLaren Health Care data breach?

If you received healthcare services from McLaren Health Care, you may have been affected by one of their 2 reported breaches. Check your mail for breach notification letters, review your medical records for unauthorized changes, and use our breach checker tool to search for specific incidents.

Was my data affected by the McLaren Health Care breach?

If you were a patient of McLaren Health Care during the breach period, your data may have been compromised. Check your mail for breach notification letters. You can also contact McLaren Health Care directly or file a records request to verify what data was accessed.

What data was exposed in the McLaren Health Care breach?

Healthcare data breaches can expose names, dates of birth, Social Security numbers, medical records, insurance information, and financial data. The specific data types vary by incident. Review the breach notification from McLaren Health Care for details on what was compromised.

Can I sue McLaren Health Care for a data breach?

Whether you can bring or join a claim depends on the incident, governing law, documented harm, filing deadlines, and any court-approved settlement terms. Review current court materials and consult a licensed healthcare data breach attorney for advice about your circumstances.

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McLaren Health Care Data Breach History

McLaren Health Care has been involved in 2 reported healthcare data breaches affecting 744K patients.

How many data breaches has McLaren Health Care had?

McLaren Health Care has been involved in 2 reported healthcare data breaches affecting a total of 744K patients. The earliest breach was reported in 2023 and the most recent in 2025. Breach types include: Hacking/IT Incident. If you received care from McLaren Health Care, review the timeline below to check if your data may have been compromised.

MichiganHacking/IT Incident

2

Total Breaches

744K

Patients Affected

2023

First Breach

2025

Most Recent

Breach Timeline

2025

McLaren Health Care

2025-06-24 · Michigan

critical

743K affectedHacking/IT IncidentNetwork Server

Based on typical network server breaches in healthcare settings, the following protected health information may have been accessed: ### Personally Identifiable Information - Full names - Dates of birth - Social Security numbers - Medical record numbers - Patient account numbers ### Contact Information - Home addresses - Telephone numbers - Email addresses ### Healthcare Information - Diagnoses and medical conditions - Treatment plans and clinical notes - Medication lists and prescriptions - Laboratory and imaging results - Surgical history and procedures - Healthcare provider names and specialties - Dates of service and healthcare encounters ### Insurance and Financial Information - Insurance policy numbers - Group numbers - Subscriber identification numbers - Potentially banking information if stored on network servers - Billing and payment information ### Additional Information - Emergency contact information - Employer information - Next of kin details The specific data elements exposed would depend on which network servers were compromised and what databases they contained. Network server breaches typically affect multiple data repositories simultaneously.

2023

McLaren Health Care

2023-10-20 · Michigan

medium

501 affectedHacking/IT IncidentNetwork Server

Protected health information (PHI) likely exposed includes: patient names, dates of birth, medical record numbers, patient identification numbers, insurance information (policy numbers, subscriber IDs), healthcare provider information, clinical notes or treatment information (depending on server access scope), diagnosis codes, procedure codes, medication information, and potentially Social Security numbers if stored on affected systems. The specific data elements depend on which network servers were compromised and what information those systems contained.

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Check other providers in our database

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Verify accuracy after a breach

Data Source: All breach data is sourced from the U.S. Department of Health and Human Services (HHS) Office for Civil Rights (OCR) Breach Portal. Organization names are matched as reported; some entities may appear under different legal names.

Related resources

McLaren Health Care Data Breach History

McLaren Health Care has been involved in 2 reported healthcare data breaches affecting 744K patients.

How many data breaches has McLaren Health Care had?

McLaren Health Care has been involved in 2 reported healthcare data breaches affecting a total of 744K patients. The earliest breach was reported in 2023 and the most recent in 2025. Breach types include: Hacking/IT Incident. If you received care from McLaren Health Care, review the timeline below to check if your data may have been compromised.

MichiganHacking/IT Incident

2

Total Breaches

744K

Patients Affected

2023

First Breach

2025

Most Recent

Breach Timeline

2025

McLaren Health Care

2025-06-24 · Michigan

critical

743K affectedHacking/IT IncidentNetwork Server

Based on typical network server breaches in healthcare settings, the following protected health information may have been accessed: ### Personally Identifiable Information - Full names - Dates of birth - Social Security numbers - Medical record numbers - Patient account numbers ### Contact Information - Home addresses - Telephone numbers - Email addresses ### Healthcare Information - Diagnoses and medical conditions - Treatment plans and clinical notes - Medication lists and prescriptions - Laboratory and imaging results - Surgical history and procedures - Healthcare provider names and specialties - Dates of service and healthcare encounters ### Insurance and Financial Information - Insurance policy numbers - Group numbers - Subscriber identification numbers - Potentially banking information if stored on network servers - Billing and payment information ### Additional Information - Emergency contact information - Employer information - Next of kin details The specific data elements exposed would depend on which network servers were compromised and what databases they contained. Network server breaches typically affect multiple data repositories simultaneously.

2023

McLaren Health Care

2023-10-20 · Michigan

medium

501 affectedHacking/IT IncidentNetwork Server

Protected health information (PHI) likely exposed includes: patient names, dates of birth, medical record numbers, patient identification numbers, insurance information (policy numbers, subscriber IDs), healthcare provider information, clinical notes or treatment information (depending on server access scope), diagnosis codes, procedure codes, medication information, and potentially Social Security numbers if stored on affected systems. The specific data elements depend on which network servers were compromised and what information those systems contained.

Search All Breaches

Check other providers in our database

Request Your Medical Records

Verify accuracy after a breach

Data Source: All breach data is sourced from the U.S. Department of Health and Human Services (HHS) Office for Civil Rights (OCR) Breach Portal. Organization names are matched as reported; some entities may appear under different legal names.