North Oaks Data Breach Affects Several Thousand Patients

On June 4, 2025, North Oaks Health System discovered suspicious activity within certain employee email accounts. An investigation was launched and revealed that an unauthorized actor gained access to some emails and attachments between May 28 and June 5, 2025.

The data breach affected the personal and protected health information of at least 6,243 individuals. Compromised data included names, addresses, dates of birth, Social Security numbers, health insurance information, and medical records relating to patient care at North Oaks.

North Oaks Health System disclosed the data breach to the U.S. Department of Health and Human Services on Sept. 2, 2025. The organization also published a Notice of Cybersecurity Incident on its website and is notifying impacted patients by mail.

North Oaks Health System's response

Following the discovery of the breach, North Oaks Health System worked to secure its systems and notified law enforcement. The organization is notifying affected patients and has set up a dedicated call center at 866-559-4681, 8:00 am – 5:30 pm, Central Time, Monday through Friday.

If you believe your personal information may have been compromised in this breach:

• Carefully review any notice or communication you receive from North Oak Health System.
• Monitor financial accounts and credit reports for signs of identity theft.
• Consider placing fraud alerts or credit freezes with the major credit bureaus.
• Be cautious of unsolicited emails or phone calls requesting personal information.

For more information about the healthcare organization, visit the North Oaks Health System website.