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Regulator-posted notice

Breach notice filed by Walmart Stores, Inc. (March 2016)

Organization named: Walmart Stores, Inc. Provisional: identity as filed, not yet matched to the directory
Type as the source lists it: Unauthorized Access/Disclosure

What the sources say

HHS OCR breach portal (HIPAA breaches affecting 500 or more individuals) Primary notice

Posted on the HHS OCR breach portal (HIPAA breaches affecting 500 or more individuals) with a submission date of March 1, 2016.

Organization as reported
Walmart Stores, Inc., AR
Entity type as reported
Healthcare Provider
Category as reported
Unauthorized Access/Disclosure
Location of information as reported
Electronic Medical Record
Submission date
March 1, 2016
Observed by BreachRecords
2026-10-18 16:15 UTC (revision 14601, row:5740)
Archived copy
Held in the private archive (provenance)

Walmart Stores, Inc. (Walmart), the covered entity (CE), discovered that a software change on its computer system caused a technical error that resulted in the electronic protected health information (ePHI) to be viewable on its online pharmacy account portal. This breach affected 4,800 individuals and the ePHI involved included names, addresses, phone numbers, email addresses, prescriptions, insurance information, treatment information and the last four digits of its patients' credit card numbers. Walmart notified all affected individuals and offered identity theft protection services. As a result of this incident, Walmart conducted an internal investigation and implemented additional privacy and security measures. It also created a cross-functional team of subject matter experts to be used when migrating to new technologies or when undertaking significant redesign efforts. OCR obtained assurances from Walmart that it implemented the actions noted above.

The source's own words, from the revision above.

Figures, per source

  • 4,800 individuals affected (total reported), as reported by the HHS OCR breach portal (HIPAA breaches affecting 500 or more individuals), source date March 1, 2016, revision observed 2026-10-18.

Each figure is one source's figure with the basis that source gave. Figures from different sources are shown side by side and are not added, averaged or chosen between.

Timeline

Source dates are the dates the sources give. Observation dates are when BreachRecords recorded each revision.

  • Submission date at the HHS OCR breach portal (HIPAA breaches affecting 500 or more individuals)
  • Observed by BreachRecords (revision 14601)
  • Approved by a reviewer

Organizations linked by a reviewer

  • Walmart Stores, Inc. Named as the covered entity Provisional: identity as filed, not yet matched to the directory Linked 2026-10-19, method provisional.

Archived evidence

  • 3dbc27dd5742e041cc1e7fe18cc669e2901fbd3b86b7007ed27948ff4d406e1f
    text/csv, 5,530,996 bytes, from the HHS OCR breach portal (HIPAA breaches affecting 500 or more individuals), retrieved 2026-10-18 16:15 UTC. Archived privately · Provenance · Source page

Records reflect source filings as of the dates shown. BreachRecords is not a regulator.

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