Native American Health Center (NAHC) notified individuals of a data security incident where unauthorized access occurred between November 1 and November 19, 2023. NAHC discovered the incident on November 19, 2023, and immediately disconnected network access. A forensic investigation concluded in January 2024 that files were accessed by an unauthorized actor. Affected data includes names, dates of birth, and medical information (PHI). Social Security numbers were not impacted. NAHC replaced hard drives, enhanced MFA, and offered 12 months of credit monitoring.