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Regulator-posted notice

Breach notice filed by MedStar St. Mary's Hospital (May 2025)

Organization named: MedStar St. Mary's Hospital Provisional: identity as filed, not yet matched to the directory
Type as the source lists it: Hacking/IT Incident

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 May 29, 2025.

Organization as reported
MedStar St. Mary's Hospital, MD
Entity type as reported
Healthcare Provider
Category as reported
Hacking/IT Incident
Location of information as reported
Network Server
Submission date
May 29, 2025
Observed by BreachRecords
2026-10-18 16:15 UTC (revision 9290, row:429)
Archived copy
Held in the private archive (provenance)

The covered entity (CE), MedStar St. Mary’s Hospital, reported that its business associate (BA) reported that it was the subject of a cybersecurity attack that affected the protected health information (PHI) of 172,915 individuals. The PHI involved included names, addresses, dates of birth, drivers’ license and Social Security numbers, diagnoses/conditions, lab results, medications, and health insurance information. The CE notified HHS, the affected individuals, the media, and provided substitute notice. In response to the breach, the CE and BA provided complimentary credit monitoring services to the affected individuals and implemented additional safeguards to better protect PHI.

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

Figures, per source

  • 172,915 individuals affected (total reported), according to the HHS Office for Civil Rights breach portal, source date May 29, 2025, 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 9290)
  • Approved by a reviewer

Organizations linked by a reviewer

  • MedStar St. Mary's Hospital 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.

Request a correction

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