AccidentalHealthcareHealthcareMisdeliveryCustomer Data InvolvedIdentity (basic)Government IDHighContained

DentaQuest, LLC

bd_edb3d3a2b7f57025 · schema v1 · pii pii-v1

Severity

High

Discovered

Mar 30, 2026

Filed

May 22, 2026

To disclose

8 weeks

Affected

3,086state residents only

Linked

2 filings

Confidence

66%

Full breach record for DentaQuest, LLC →5 incidents on file

DentaQuest, a dental benefits provider, notified the New Hampshire Attorney General of a data security incident involving 3,086 NH residents. On March 27, 2026, a CMS Prior Authorization Interoperability Report was posted to DentaQuest.com containing a second tab with member-level PII, including names and Medicaid/Medicare ID numbers. DentaQuest discovered the error on March 30, 2026, removed the report, and notified HHS. Notices were mailed to affected individuals on May 22, 2026. No evidence of misuse was found.

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Incident timeline

undetected · 3 days

discovery → filing · 8 weeks / 53 days

Mar 27, 2026

Begins

Mar 30, 2026

Discovered

May 22, 2026

Filed

vs. sector median

5 wks faster

This filing is one of 2 about the same incident.View merged incident

Linked disclosures

Why this link?

Regulatory filings (1) · sorted by filing gap

HHS OCRbd_b429c7c24257a3502026-05-22Candidate

Name: DentaQuest, LLC
norm: dentaquest

Name: DentaQuest, LLC
norm: dentaquest
Industry: Healthcarellm

Discovered: Mar 30, 2026
Breach occurred: Mar 27, 2026
Undetected for: 3 daysoccurrence → discovery
Materiality determined: —
Notification sent: May 22, 2026
Affected individuals: 3,086state-resident count only
Data types: Identity (basic)Government ID
Data elements: Date of birth
Attack vector: Misconfiguration
MITRE ATT&CK: T1119 Automated Collection
Regulator citations: Notified the United States Department of Health and Human Services

During the incident: Removed the report from its website
Launched a comprehensive investigation
Notified the United States Department of Health and Human Services
Sent written consumer notice letter
Changes made: Provided additional security awareness training to the employee that uploaded the report
Implemented additional technical safeguards to prevent this type of incident in the future
Source: Quoted from the filing itself, not independently verified.

Time to disclose: 8 weeks(53 days from discovery to filing)
Compliance flags: — (clock not assessable for this source)

Status: No extraction artifact recorded for this disclosure.

Filing propagation · 2 filings · 2 states

View merged incident ↗

HHS OCRMay 22 · first

New Hampshire State AGMay 22 · first · this page

Evidence ladder

Leak-site claim

Attacker assertion only. Establishes: claim date, group, alleged victim.

Press / market report

Unlocks: incident narrative, operational impact. Still no compliance clock.

State AG / regulator filingThis record

Unlocks: discovery date, data types, affected count, compliance clock.

SEC 8-K / victim statement

Unlocks: materiality, stated response, full audit trail. Ceiling removed.

Source URL: https://mm.nh.gov/files/uploads/doj/remote-docs/dentaquest-20260522.pdf
DisclosureLens links to the originating regulator URL — full filing bodies are not redistributed from public surfaces (§4.5).
Filed at: May 22, 2026
Raw hash: 843b540dc17e57f97732fbeb8faf3cb1086bffe522a77ff9635a80c4bb089cad

Linked disclosures

Regulatory filings (1) · sorted by filing gap

Reporting entityDentaQuest, LLC

Victim entityDentaQuest, LLC

Incidentdiscovered Mar 30, 2026

Stated responseRemoved the report from its website

Complianceclock not assessable

Extraction provenanceno artifact recorded

Source provenancemm.nh.gov