HHS OCR report · 2024
The Mount Kisco Surgery Center LLC d/b/a The Ambulatory Surgery Center of Westchester data breach
OCR report facts
- Covered entity
- The Mount Kisco Surgery Center LLC d/b/a The Ambulatory Surgery Center of Westchester
- Entity type
- Healthcare Provider
- State
- New York
- Individuals affected
- 22,139
- Submission date
- Jun 25, 2024
- Type of breach
- Hacking/IT Incident
- Location of breached information
- Business associate present
- No
- Status
- Archive (closed)
OCR description
The covered entity (CE), The Mount Kisco Surgery Center dba The Ambulatory Surgery Center of Westchester, reported that it experienced a hacking incident that affected the protected health information (PHI) of 22,139 individuals. The PHI involved included names, Social Security and drivers’ license or state identification numbers, dates of birth, diagnoses, medications, claims and financial information, and health insurance and treatment information. The CE notified HHS, affected individuals...
Text as published on the HHS OCR breach portal.
Frequently asked questions
How many people were affected by the The Mount Kisco Surgery Center LLC d/b/a The Ambulatory Surgery Center of Westchester data breach?
The report to HHS OCR lists 22,139 individuals affected.
When was it reported to HHS?
It was submitted to HHS OCR on Jun 25, 2024.
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 The Mount Kisco Surgery Center LLC d/b/a The Ambulatory Surgery Center of Westchester 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 The Mount Kisco Surgery Center LLC d/b/a The Ambulatory Surgery Center of Westchester.