Central Maine Healthcare announced today that it has completed notifying patients whose information may have been involved in a data security incident.
On November 6, 2025, Central Maine Healthcare completed its investigation and analysis of the data security incident. Central Maine Healthcare first became aware of the incident on June 1, 2025, after it detected unusual activity in its information technology (“IT”) network and immediately took steps to protect and secure its systems. Central Maine Healthcare promptly launched an investigation with the assistance of third-party cybersecurity experts and notified law enforcement.
The investigation determined that an unauthorized party accessed Central Maine Healthcare’s IT environment between March 19, 2025 and June 1, 2025. While in Central Maine Healthcare’s IT environment, the unauthorized party may have accessed and/or acquired files that contain Central Maine Healthcare patient information, including names, dates of birth, treatment information, dates of service, provider names, and health insurance information. For some patients, these files may have also contained their Social Security numbers.
Between July 31, 2025 and December 29, 2025, Central Maine Healthcare notified patients whose information may have been involved in the incident. Central Maine Healthcare established a dedicated, toll-free incident response line to answer questions that individuals may have. If an individual believes their information was involved and has any questions about this incident, please call 833-397-7918, Monday – Friday, 8:00 a.m. – 8:00 p.m., Eastern Time, except for major U.S. holidays. Additional information about this incident can also be found at www.cmhc.org.
For patients whose information may have been involved in the incident, Central Maine Healthcare recommends that they review the statements they receive from their healthcare providers and health insurance plans. If they see any services that were not received, they should contact the provider or health plan immediately.
Central Maine Healthcare takes this incident very seriously and sincerely regrets any concern this may cause. To help prevent something like this from happening again, Central Maine Healthcare has implemented enhanced monitoring and alerting software to further protect and monitor its systems.
