Millcreek Pediatrics Data Breach Investigation

Recently, Millcreek announced that it had experienced a data breach in which sensitive personal identifiable information and protected health information in its care may have been compromised. According to the breach notice shared on its website, on or about February 25, 2025, Millcreek experienced unauthorized access to its network.¹ As a result, Millcreek launched an investigation to determine the nature of the incident.

Through its investigation, Millcreek confirmed that sensitive personal information in its systems may have been accessed or acquired by an unauthorized third party between February 17 and February 25, 2025. As a result, Millcreek began a review of the data to determine what information had been impacted as well as identify the specific individuals affected. While the information impacted varies depending on the individual, the type of information potentially exposed includes:

• Name
• Social Security number
• Date of birth
• Driver’s license number and/or state identification number
• Medical record number
• Patient identification number
• Diagnosis/conditions information
• Provider information
• Dates of service
• Healthcare claims information
• Clinical/treatment information

On November 21, 2025, Millcreek posted notice of the breach on its website and began mailing breach notification letters to impacted individuals. Additionally, Millcreek filed official notice of the data breach with the U.S. Department of Health and Human Services’ Office for Civil Rights.⁵ Based on the website breach notice, Millcreek is providing affected individuals with a list of the specific types of sensitive information impacted and complimentary credit monitoring services. A link to the website breach notice is below.