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Regulator-posted notice

Breach notice filed by San Mateo Medical Center (November 2018)

Organization named: San Mateo Medical Center 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 Office for Civil Rights breach portal with a submission date of Nov. 13, 2018.

Organization as reported
San Mateo Medical Center, CA
Entity type as reported
Healthcare Provider
Category as reported
Unauthorized Access/Disclosure
Location of information as reported
Other
Submission date
Nov. 13, 2018
Observed by BreachRecords
2026-10-18 16:15 UTC (revision 13631, row:4770)
Archived copy
Held in the private archive (provenance)

On November 13, 2018, OCR received a breach notification report from San Mateo Medical Center (SMMC). SMMC reported that the breach affected approximately 5,000 individuals. After an internal investigation, SMMC determined that the report was filed in error, the incident did not amount to a breach and, the incident should not have been reported since no breach occurred. Based on this information, OCR closed the case.

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

Figures, per source

  • 5,000 individuals affected (total reported), according to the HHS Office for Civil Rights breach portal, source date Nov. 13, 2018, 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 (HHS Office for Civil Rights breach portal)
  • Observed by BreachRecords (revision 13631)
  • Approved by a reviewer

Organizations linked by a reviewer

  • San Mateo Medical Center 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, retrieved from HHS Office for Civil Rights breach portal, 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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