BreachCensus

Sierra Vista Hospital & Clinics

healthcareHealthcareUnited States of America

Sierra Vista Hospital & Clinics is a healthcare organisation in Texas. It appears on the HHS OCR breach portal, the Massachusetts 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 October 7, 2025.

Data as of September 1, 2026.

Sources

Confirmed incident

Filed in TX, MA and NM

The same incident was filed separately with 3 jurisdictions within a few days of each other (TX, MA and NM) — shown here as one incident.

Occurred
January 14, 2025
Disclosed
October 7, 2025
Records affected
75,054

Was I affected? →

Timeline

  1. October 6, 2025
    Reported to regulator Regulator

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

    source
  2. October 7, 2025
    Reported to regulator Regulator

    MA AG breach notification: 7 Massachusetts residents affected

    source
  3. October 7, 2025
    Reported to regulator Regulator

    TX AG breach notification: 481 Texas residents affected

    source
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 ↗

Related

Same sector and location

Disclosed around the same time