HMG Healthcare Data Breach Affects 80,000 Individuals. HMG Healthcare, LLC, a Texas-based healthcare services provider, has recently confirmed that the protected health information of up to 80,000 individuals HMG Healthcare, LLC, a Texas-based healthcare services provider, has recently confirmed that the protected health information of up to 80,000 individuals was exposed and potentially stolen in a cyberattack that was detected in November 2023. Third-party company: HMG Healthcare.