BreachCensus

DentaQuest, LLC

healthcareHealthcareUnited States of America

DentaQuest, LLC is a healthcare organisation in Washington. It appears on the HHS OCR breach portal, the Washington State Attorney General breach-notification register and the Texas Attorney General breach-notification register with 1 confirmed incident (2 filings); the most recent notice was filed on July 16, 2026.

Data as of September 6, 2026.

Confirmed incident

Filed in WA, DE, TX, MA and IA — Phishing Attack

The same incident was filed separately with 5 jurisdictions within a few days of each other (WA, DE, TX, MA and IA) — shown here as one incident.

Occurred
May 17, 2026
Disclosed
July 16, 2026
Records affected
15,000,000

Timeline

  1. July 16, 2026
    Reported to regulator Regulator

    IA AG breach notification: an unknown number of Iowa residents affected

    source
  2. July 16, 2026
    Reported to regulator Regulator

    WA AG breach notification: 148,300 Washington residents affected

    source
  3. July 16, 2026
    Reported to regulator Regulator

    HHS OCR breach portal listing: Hacking/IT Incident; Network Server

    source
  4. July 17, 2026
    Reported to regulator Regulator

    DE AG breach notification: 3,700 Delaware residents affected

    source
  5. July 17, 2026
    Reported to regulator Regulator

    TX AG breach notification: 3,973,000 Texas residents affected

    source
What a Washington notice means

Required under RCW 19.255.010. Notice to the Attorney General is required when a breach affects more than 500 Washington residents.

Note: the count is Washington residents only, not a total.

Washington breach-notification register ↗

What a Texas notice means

Required under Tex. Bus. & Com. Code §521.053. Notice to the Attorney General is required when a breach affects at least 250 Texas residents.

Note: the published count is a total, not limited to Texas residents.

Texas breach-notification register ↗

What a Massachusetts notice means

Required under M.G.L. c. 93H. Notice to the Attorney General is required for a breach affecting any number of Massachusetts residents' personal information -- the statute sets no minimum count.

Note: the count is Massachusetts residents only, not a total.

Massachusetts breach-notification register ↗