Healthcare management services provider QualDerm Partners is notifying more than 3.1 million people that their personal, medical, and health insurance information was stolen in a December 2025 data breach.
The incident, the company says, was discovered on December 24 and involved unauthorized access to its network for two days.
During this window, the attackers exfiltrated certain information from the “limited number of systems” that they compromised, the company notes in an incident notification (PDF).
The stolen information, it says, includes names, addresses, dates of birth, email addresses, medical record numbers, doctor names, treatment and diagnosis information, health insurance information, dates of death, and, in some cases, government-issued ID information.
QualDerm also notes that its investigation into the data breach continues, and that it has decided to notify the patients who have been identified to date.
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