Every dollar amount and date on this page is quoted from the official settlement document.
Mount Kisco - Data Breach
If your personal or medical information was caught up in the November 2023 cyberattack on the Ambulatory Surgery Center of Westchester (Mount Kisco), you need to file a claim by June 29, 2026 to get any money from this settlement. Filing is free and can be done online in minutes.
Official eligibility wordingIndividuals whose private information was potentially compromised in the November 2023 Mount Kisco (Ambulatory Surgery Center of Westchester) data security incident; Class Members were identified by Mount Kisco's records. Checked against the official settlement source by SettleSignal on June 16, 2026.
Key facts
- Who may qualify People whose private information was potentially exposed in the November 2023 data breach at the Ambulatory Surgery Center of Westchester. Mount Kisco identified affected individuals from its own records, and many were sent a direct notice. If you received a notice, or you were a patient or had records at this facility around that time, you're likely in the class.
- Claim deadlineJune 29, 2026 (closed)
- What you needSubmit a claim form online or by mail by June 29, 2026. The proof requirements aren't specified on the settlement site yet, so file and provide whatever identifying information the form asks for.
What you'll need to file
From our inspection of the official claim form:
- Filing method Online or mail-in
- Notice ID Optional — there is a no-notice path
- Documentation For documented out-of-pocket losses: proof such as bank statements or receipts; claimant-made notes/papers may supplement but are not sufficient alone; documentation must show expenses were because of the Data Incident.…
How hard is this claim to file?
Documents you'll need
- Notice of data security incident received from Mount Kisco
- Records of out-of-pocket losses related to the data incident (if claiming reimbursement)
Watch out for
- Everything — claim, opt-out, and objection — is due June 29, 2026. One deadline, three different choices.
- The exposed data includes some of the most sensitive categories: Social Security numbers, driver's licenses, dates of birth, medical diagnoses, prescriptions, health insurance details, and financial account info.
- The settlement documents don't disclose a specific cash payment amount.
- A Final Approval Hearing is set for September 9, 2026 at 2:00 p.m. ET. The settlement isn't final until the court signs off.
We prepare — you file on the official site yourself. This is not legal advice and is not an eligibility decision; the administrator and court decide.
Verify it yourself
How we verified this record
- Claim deadline
- Eligibility
- Official claim link
- 5 fields queued for re-check
1 official source linked to this record.
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Claim deadline
June 29, 2026
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Eligibility summary Quoted in the official eligibility wording above ↑
If your Private Information was potentially compromised in the November 2023 Mount Kisco Data Security Incident, a proposed class action settlement may affect your rights, and entitle you to benefits and a cash payment.
Show all 1 more verified field
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Official claim URL
mtkiscodatasettlement.com
Where to act
Status history
- Claim deadline passed.
- Settlement published after verification.
- Verified field details updated from an official source.
