From late 2009 through the end of 2023, nearly 6,000 large health care data breaches were reported in the United States, according to the U.S. Office for Civil Rights. In 2023, breaches resulted in the unauthorized exposure of 133 million health care records. When a health care data breach occurs, individuals are at risk for medical identity theft. Learn about the basics of medical identity theft and discover how to prevent medical identity theft in medical practices.