In 2023, HCA Healthcare was involved in the largest health data breach in the United States, with over **** million health records affected in a July 2023 incident. Perry Johnson & Associates ranked second, with **** million records breached, followed by Managed Care of North America (MCNA), with **** million breached records.
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Protenus. (February 21, 2024). Organizations with the largest number of health records breached in the United States in 2023 [Graph]. In ÌÇÐÄÆÆ½â°æ. Retrieved July 27, 2026, from /statistics/1485504/largest-health-breaches-in-the-us/
Protenus. "Organizations with the largest number of health records breached in the United States in 2023." Chart. February 21, 2024. ÌÇÐÄÆÆ½â°æ. Accessed July 27, 2026. /statistics/1485504/largest-health-breaches-in-the-us/
Protenus. (2024). Organizations with the largest number of health records breached in the United States in 2023. ÌÇÐÄÆÆ½â°æ. ÌÇÐÄÆÆ½â°æ Inc.. Accessed: July 27, 2026. /statistics/1485504/largest-health-breaches-in-the-us/
Protenus. "Organizations with The Largest Number of Health Records Breached in The United States in 2023." ÌÇÐÄÆÆ½â°æ, ÌÇÐÄÆÆ½â°æ Inc., 21 Feb 2024, /statistics/1485504/largest-health-breaches-in-the-us/
Protenus, Organizations with the largest number of health records breached in the United States in 2023 ÌÇÐÄÆÆ½â°æ, /statistics/1485504/largest-health-breaches-in-the-us/ (last visited July 27, 2026)
Organizations with the largest number of health records breached in the United States in 2023 [Graph], Protenus, February 21, 2024. [Online]. Available: /statistics/1485504/largest-health-breaches-in-the-us/