HHS OCR report · 2026
Weill Cornell Medicine data breach
OCR report facts
- Covered entity
- Weill Cornell Medicine
- Entity type
- Healthcare Provider
- State
- New York
- Individuals affected
- 516
- Submission date
- Feb 23, 2026
- Type of breach
- Unauthorized Access/Disclosure
- Location of breached information
- Electronic Medical Record
- Business associate present
- No
- Status
- Archive (closed)
OCR description
The covered entity (CE), Weill Cornell Medicine, reported that an employee inappropriately accessed patients’ protected health information (PHI) without approval or authorization. According to the breach report, the breach affected approximately 516 individuals. The PHI involved demographic and treatment information. The CE notified HHS and the affected individuals. In its mitigation efforts, the CE sanctioned the employee and reviewed its access controls. OCR provided technical assistan...
Text as published on the HHS OCR breach portal.
Other reports by Weill Cornell Medicine
| Covered entity | State | Entity type | Individuals | Submitted | Type of breach | Status |
|---|---|---|---|---|---|---|
| Weill Cornell Medicine | NY | Healthcare Provider | 25,697 | Nov 12, 2021 | Hacking/IT Incident | Archive (closed) |
Frequently asked questions
How many people were affected by the Weill Cornell Medicine data breach?
The report to HHS OCR lists 516 individuals affected.
When was it reported to HHS?
It was submitted to HHS OCR on Feb 23, 2026.
What type of breach was it?
The OCR portal lists the type of breach as Unauthorized Access/Disclosure, with the breached information located in: Electronic Medical Record.
Is the investigation still open?
No. The report is in the OCR portal archive, which holds reports where OCR has closed its review.
Is a breach notice letter from Weill Cornell Medicine legitimate?
This site cannot verify letters. Check the sender against the organisation's official website and the HHS OCR breach portal, and avoid calling numbers or clicking links only listed in an unexpected message. See our guide on what to do after a data breach notice.
Source: HHS OCR Breach Portal, OCR export October 2026. Network USA is not affiliated with HHS or Weill Cornell Medicine.