McAlester Regional Health Center, a healthcare provider in McAlester, Oklahoma, reported an external system breach (hacking) occurring between April 13 and April 24, 2023. The incident affected 37,731 individuals, including 4 Maine residents. The breach compromised names and Social Security Numbers. The company notified affected individuals in writing on November 15, 2023, and offered 12 months of credit monitoring and identity protection services.