HHS OCR report ยท 2021
Weill Cornell Medicine data breach
OCR report facts
- Covered entity
- Weill Cornell Medicine
- Entity type
- Healthcare Provider
- State
- New York
- Individuals affected
- 25,697
- Submission date
- Nov 12, 2021
- Type of breach
- Hacking/IT Incident
- Location of breached information
- Business associate present
- No
- Status
- Archive (closed)
OCR description
The covered entity (CE), Weill Cornell Medicine, reported that several employees were the victims of an email phishing scheme that affected the protected health information (PHI) of 25,697 individuals. The PHI involved included names, dates of birth, postal addresses, email addresses, medical record numbers, health insurance information, diagnoses, medications prescribed, Social Security numbers, and other treatment information. The CE notified HHS, affected individuals, and the media. In it...
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 | 516 | Feb 23, 2026 | Unauthorized Access/Disclosure | Archive (closed) |
Frequently asked questions
How many people were affected by the Weill Cornell Medicine data breach?
The report to HHS OCR lists 25,697 individuals affected.
When was it reported to HHS?
It was submitted to HHS OCR on Nov 12, 2021.
What type of breach was it?
The OCR portal lists the type of breach as Hacking/IT Incident, with the breached information located in: Email.
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.