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.
Payment amount set by the settlement administrator
The settlement offers cash payments to class members who file a valid claim. The specific amount per person isn't set yet and will depend on how many people file, but you have to submit a claim to receive anything.
📄 Proof requirement not specified here — check the official site for what documentation, if any, a claim needs.
You'll go to: mtkiscodatasettlement.com
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.
Official eligibility wording
Individuals 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.
This summary is based on available official settlement sources. The settlement administrator determines eligibility and payment approval.
New to the terms? Plain-English: claim deadline, proof of purchase, administrator, pro rata.
Important dates
- Claim deadline
- June 29, 2026
Proof requirements
Proof requirement is currently marked as Unknown.
Review the official claim form before submitting any information.
What you need
Submit 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.
How to file this claim
- File online at https://mtkiscodatasettlement.com/form/claim/ — it's the fastest option.
- Prefer paper? Download the Claim Form at https://cw.simpluris.com/docs/public/downloads/MOC/CLAIM_FORMYY6x and mail it to the Settlement Administrator.
- No printer handy? Call or email the Settlement Administrator and they'll send you a paper copy.
- Get it in by June 29, 2026. That's the hard cutoff.
- Questions? Reach the Settlement Administrator at info@MtKiscoDataSettlement.com or (833) 386-6524.
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.
How do I file a claim for this settlement?
File directly with the official administrator via the official claim form before June 29, 2026.
- Confirm you are within the eligible group described in the official notice — the settlement administrator determines eligibility.
- Gather any documents the official form asks for — this settlement marks proof as Unknown.
- Open the official claim form or settlement website.
- Submit accurate information through the official settlement administrator or government source before June 29, 2026.
- Save your confirmation number if one is provided, then watch the payment status for distribution updates.
New to settlement claims? How to file safely →
Worried it might be fake? Run the 60-second legitimacy check →
How we verified this record
- Claim deadline the official settlement website · Jun 16, 2026
- Eligibility the official settlement website · Jun 16, 2026
- Official claim link the official settlement website · Jun 16, 2026
- Payout details queued for re-check
- Proof requirement queued for re-check
- Administrator queued for re-check
- Court case queued for re-check
- Payment status queued for re-check
Every published record clears our source-verification bar; remaining fields are checked one by one on our weekly re-verification pass.
Checked fields are matched against a named official source and re-checked on a schedule. We show the authority and the date, never our internal evidence link.
-
Claim deadline
June 29, 2026
Verified Jun 16, 2026 · against the official settlement website
-
Eligibility summary
Individuals 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.
Verified Jun 16, 2026 · against the official settlement website
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
-
Official claim URL
mtkiscodatasettlement.com
Verified Jun 16, 2026 · against the official settlement website
Common questions
Is the Mount Kisco - Data Breach settlement legitimate?
Yes — the Mount Kisco - Data Breach settlement is a real claims process that SettleSignal tracks from its official source. File only through the official settlement website (mtkiscodatasettlement.com); a genuine settlement administrator never charges a fee to file. SettleSignal last checked this record against the official source on June 16, 2026. Always confirm the current details on the official site before filing.
Who may qualify for this settlement?
Individuals 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.
What is the claim deadline?
The claim deadline is June 29, 2026. Confirm the current deadline on the official settlement source before filing.
Do I need proof to claim?
Proof requirement: Unknown. The settlement administrator determines what documentation, if any, is required.
What is the current payment status?
Current payment status: Unknown. Payments are issued by the administrator after the court process concludes.
When will Mount Kisco - Data Breach pay out?
Current payment status: Unknown. Class-action payouts typically begin only after final approval and any appeals. See our payout timeline guide.
Where is the official Mount Kisco - Data Breach claim form?
The official claim form is hosted by the settlement administrator. Use the 'Open official claim form' button on this page — never pay a fee to file.
How do I know if I'm included?
Mount Kisco identified class members from its own records. If you received a notice in the mail, you're in. If you were a patient or had records at the Ambulatory Surgery Center of Westchester and your information could have been in the files accessed during the November 2023 breach, you likely qualify.
What information was exposed?
Files potentially accessed during the breach may have included full names, Social Security numbers, driver's license numbers, state ID numbers, dates of birth, medical diagnoses and treatment details, prescription information, health insurance details (including claim info and insurance ID numbers), and financial account information.
What happens if I don't file a claim?
You won't receive any payment from the settlement, and you'll still be bound by the settlement's release of claims — meaning you lose your right to sue Mount Kisco over this breach separately. Filing is your only way to get money.
Can I opt out instead?
Yes. If you opt out by June 29, 2026, you won't get any settlement benefits but you preserve your right to sue Mount Kisco on your own over this breach. You'd need to hire your own attorney at your own expense.
When will I get paid?
The Final Approval Hearing is scheduled for September 9, 2026. Payments won't go out until after the court approves the settlement and any appeals are resolved, so it could be several months after that date.
Where to act
When you are ready, you open the official claim form yourself. SettleSignal does not file claims or determine eligibility.
Use the official settlement administrator or government source.
Listed on the official settlement website.
Disclaimer
This service summarizes publicly available settlement information and links to official settlement sources. We are not a law firm, do not provide legal advice, do not submit claims on your behalf, and do not determine eligibility or payout approval. Only file a claim if the information you provide is accurate.
Change log
- June 16, 2026 — Settlement published after verification.
- June 16, 2026 — Verified field details updated from an official source.