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PRIVACY ALERT: Munson Healthcare Under Investigation for Data Breach of Over 100,000 Patient Records

The breach exposed sensitive data from legacy servers impacting 80 hospitals and involved a year-long delay in notifying 101,891 patients, prompting legal scrutiny.

  • Schubert Jonckheer & Kolbe LLP opened an investigation into a data breach at Munson Healthcare affecting 101,891 patients, the firm says.
  • On or around January 22, 2026, an unauthorized third party gained access to personal health information after a hacker accessed two legacy servers, affecting 80 hospitals, Cerner, now Oracle Health confirmed.
  • Exposed data ranges from patient names and Social Security numbers to medical record numbers and clinical records: diagnoses, medicines, test results, images, risking identity theft and privacy violations.
  • Munson Healthcare notified patients on or around January 26, 2026, and the firm says affected people may be entitled to money damages and injunctions.
  • With co-counsel nationwide, the firm said to contact Sonum Dixit at 415-299-8207 or visit classactionlawyers.com for more information.
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PRIVACY ALERT: Munson Healthcare Under Investigation for Data Breach of Over 100,000 Patient Records

SAN FRANCISCO, Jan. 29, 2026 /PRNewswire/ -- Schubert Jonckheer & Kolbe LLP is investigating a data breach that led to unauthorized access to the sensitive information of 101,891 patients of Munson Healthcare, the largest health system in Northern Michigan.

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Missoulian broke the news in Missoula, United States on Friday, January 30, 2026.
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