HHS OCR report · 2013
Memorial Sloan-Kettering Cancer Center data breach
OCR report facts
- Covered entity
- Memorial Sloan-Kettering Cancer Center
- Entity type
- Healthcare Provider
- State
- New York
- Individuals affected
- 2,279
- Submission date
- Nov 13, 2013
- Type of breach
- Loss
- Location of breached information
- Other Portable Electronic Device
- Business associate present
- No
- Status
- Archive (closed)
OCR description
Memorial Sloan Kettering Cancer Center, the covered entity (CE), reported that a former employee’s personal unencrypted external computer hard drive was lost or stolen. The drive contained the protected health information (PHI) of 2,279 of the CE’s patients and included names, addresses, telephone numbers, dates of birth, medical record numbers, physician names, appointment dates, procedure type, and clinical information. The CE notified HHS, the media, and the affected individuals. Followi...
Text as published on the HHS OCR breach portal.
Other reports by Memorial Sloan-Kettering Cancer Center
| Covered entity | State | Entity type | Individuals | Submitted | Type of breach | Status |
|---|---|---|---|---|---|---|
| Memorial Sloan-Kettering Cancer Center | NY | Healthcare Provider | 568 | Jun 8, 2012 | Theft | Archive (closed) |
Frequently asked questions
How many people were affected by the Memorial Sloan-Kettering Cancer Center data breach?
The report to HHS OCR lists 2,279 individuals affected.
When was it reported to HHS?
It was submitted to HHS OCR on Nov 13, 2013.
What type of breach was it?
The OCR portal lists the type of breach as Loss, with the breached information located in: Other Portable Electronic Device.
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 Memorial Sloan-Kettering Cancer Center 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 Memorial Sloan-Kettering Cancer Center.