Please read this website carefully and completely.
A settlement has been reached with Mount Kisco Surgery Center LLC, d/b/a The Ambulatory Surgery Center of Westchester (“Mount Kisco” or “Defendant”) in a class action lawsuit. This case is about a cyberattack on Mount Kisco that occurred in November 2023 (the “Data Security Incident”). Certain files that contained private information were potentially accessed. These files may have contained personal information such as full names; Social Security numbers; driver’s licenses; state identification numbers; dates of birth; medical information; including diagnoses information; treatment information; and prescription information; health insurance information; including claim information and health insurance ID numbers and financial account information.
The lawsuit is called Grace Oliveri et al. v. The Ambulatory Surgery Center of Westchester, Case No. 66660/2024. It is pending in the Supreme Court of New York, Westchester County (the “Litigation”). Mount Kisco denies that it did anything wrong, and the Court has not decided who is right. The parties have agreed to settle the lawsuit (the “Settlement”) to avoid the costs and risks, disruptions, and uncertainties of continuing the Litigation.
Mount Kisco's records have identified Class Members who are entitled to benefits under the Settlement. Class Members may have received a previous notice directly from Mount Kisco.
Your rights are affected whether you act or don’t act. Please read this website carefully and completely.
Summary of Your Legal Rights and Options in this Settlement | Deadline | |
Submit a Claim | The only way to receive benefits or payments from this Settlement is by submitting a valid and timely Claim Form. The fastest way to submit your Claim Form is online here. If you prefer, you can download the Claim Form here and mail it to the Settlement Administrator. You may also call or email the Settlement Administrator to receive a paper copy of the Claim Form. | June 29, 2026 |
Opt Out of the Settlement | You can choose to opt out of the Settlement and receive no benefit or payment. This option allows you to sue, continue to sue, or be part of another lawsuit against the Defendants related to the legal claims resolved by this Settlement. You can hire your own lawyer at your own expense. | June 29, 2026 |
Object to the Settlement and/or attend a hearing | If you do not opt out of the Settlement, you may object to it by writing to the Court about why you don’t like the Settlement. You may also ask the Court for permission to speak about your objection at the Final Approval Hearing. If you object, you may also file a claim for Settlement benefits. | June 29, 2026 |
Do nothing | Unless you opt out of the Settlement, you are automatically part of the Settlement. If you do nothing, you will not receive benefits or payments from this Settlement and you will give up the right to sue, continue to sue, or be part of another lawsuit against the Defendant related to the legal claims resolved by this Settlement. | No Deadline |
These rights and options—and the deadlines to exercise them—are explained further on the Notice and FAQs page.
The Court in charge of this case still has to decide whether to approve the Settlement
Upcoming Important Dates
Notification Mailing
4/29/2026
Opt Out Deadline
6/29/2026
Objection Deadline
6/29/2026
Claim Deadline
6/29/2026
Final Approval Hearing
9/9/2026, at 2:00 p.m. ET