Regulator-posted notice

Breach notice filed by Montrose Behavioral Health Hospital, Inc. (November 2023)

Organization named: Montrose Behavioral Health Hospital, Inc. 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 OCR breach portal (HIPAA breaches affecting 500 or more individuals) with a submission date of Nov. 24, 2023.

Organization as reported: Montrose Behavioral Health Hospital, Inc., IL
Entity type as reported: Healthcare Provider
Category as reported: Hacking/IT Incident
Location of information as reported: Email
Submission date: Nov. 24, 2023
Observed by BreachRecords: 2026-10-18 16:15 UTC (revision 10323, row:1462)
Archived copy: Held in the private archive (provenance)

The covered entity (CE), Montrose Behavioral Health Hospital, reported that an employee was the subject of an email phishing scheme affecting the protected health information (PHI) of 597 individuals. The PHI involved included names, addresses, dates of birth, Social Security numbers, diagnoses, health insurance information, and other treatment information. The CE notified HHS, the affected individuals, the media, and provided substitute notice. In response to the breach, the CE provided complimentary credit monitoring services and implemented additional administrative and technical safeguards. Staff were retrained on email security precautions.
The source's own words, from the revision above.

Figures, per source

597 individuals affected (total reported), as reported by the HHS OCR breach portal (HIPAA breaches affecting 500 or more individuals), source date Nov. 24, 2023, 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.

2023-11-24Submission date at the HHS OCR breach portal (HIPAA breaches affecting 500 or more individuals)
2026-10-18Observed by BreachRecords (revision 10323)
2026-10-19Approved by a reviewer

Organizations linked by a reviewer

Montrose Behavioral Health Hospital, 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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