HHS OCR report ยท 2021
Yale New Haven Health Services Corporation ("YNHHS") data breach
OCR report facts
- Covered entity
- Yale New Haven Health Services Corporation ("YNHHS")
- Entity type
- Healthcare Provider
- State
- Connecticut
- Individuals affected
- 14,603
- Submission date
- Jul 23, 2021
- Type of breach
- Hacking/IT Incident
- Location of breached information
- Network Server
- Business associate present
- Yes
- Status
- Archive (closed)
OCR description
The covered entity (CE), Yale New Haven Health Services Corporation, reported that its business associate (BA) was the victim of a cyber-attack that compromised the protected health information (PHI) of 14,603 individuals. The PHI involved included names, addresses, phone numbers, email addresses, Social Security numbers, and other treatment information. The CE notified HHS, affected individuals, the media, and provided substitute notice on its website. In response to the breach, the BA imple...
Text as published on the HHS OCR breach portal.
Frequently asked questions
How many people were affected by the Yale New Haven Health Services Corporation ("YNHHS") data breach?
The report to HHS OCR lists 14,603 individuals affected.
When was it reported to HHS?
It was submitted to HHS OCR on Jul 23, 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: Network Server.
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 Yale New Haven Health Services Corporation ("YNHHS") 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 Yale New Haven Health Services Corporation ("YNHHS").