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DentaQuest LLC

May 2026 · Graded Verified · Healthcare and Life Sciences · Government record

DentaQuest LLCMay 2026

Between May 17 and May 20 attackers accessed and exfilitrated names, addresses, Social Security numbers, member identification numbers, Medicaid and Medicare numbers, diagnosis, treatment details and billing information for as many as 23.4 million patients. Notifications have been sent to at least 4.5 million people.

California AG breach notification

Not yet quantified

VVerifiedHealthcare and Life Sciences

Corroborating records

DentaQuest, LLCVVerifiedWashington AG breach notification ↗

DentaQuestAAttestedDentaQuest Starts Notifying 15 Million+ Individuals About May 2026 Cyber Incident ↗

About this record

This incident is on the public government record: an SEC 8-K filing or a state-regulator notification, graded Verified. Every figure links to the source it was read from; if we have read one wrong, tell us at info@hackerinahoodie.com. This index never sums figures across incidents. See the methodology.

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