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DentaQuest data breach

Was I affected?

DentaQuest confirmed a breach affecting about 15 million people, exposing names, addresses, phone numbers and email addresses. You may be affected if your dental or vision benefits (often through Medicaid, Medicare Advantage or an employer plan) were run by DentaQuest and you received a letter from July 17, 2026 onward.

DentaQuest breach facts
AnnouncedJun 3, 2026
When it happenedMay 17-20, 2026
People affected15 million
Data exposedNames, Addresses, Phone numbers, Email addresses, Dates of birth, Social Security numbers, Health insurance details and Medical information
StatusConfirmed by the company or a regulator filing

What happened

Dental and vision benefits administrator DentaQuest, which serves many Medicaid and Medicare plans, said attackers had access to part of its network from May 17 to 20, 2026; ShinyHunters claimed the theft and leaked data. Notices say Social Security numbers, member IDs and dental or vision health details were exposed. DentaQuest reportedly confirmed at least 15 million people affected, with up to 23.4 million potentially impacted.

What should I do?

  1. Freeze your credit for free at Equifax, Experian and TransUnion so no one can open new accounts in your name.
  2. Request an IRS Identity Protection PIN so nobody can file a tax return with your Social Security number.
  3. Read every Explanation of Benefits from your health insurer and report any visit, test or prescription you never had.
  4. Sign up for the free credit or identity monitoring offered in the notice letter before its enrollment deadline.

Check whether your email address is in this breach on Have I Been Pwned (breach data from haveibeenpwned.com, CC BY 4.0).

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