Onsite Women's Health Data Breach Settlement
Clarkson, et al. v. Onsite Mammography, LLC, d/b/a Onsite Women's Health, No. 3:25-cv-11123-MGM (U.S. District Court, District of Massachusetts)
Closed. The claim deadline of August 11, 2026 has passed. You can no longer file a claim for this settlement. This page is kept for reference.
A class action settlement over a data security incident at Onsite Mammography (Onsite Women's Health) that potentially exposed the personally identifiable information and protected health information of patients and others whose data the company held. Onsite denies wrongdoing. The deadline of August 11, 2026 has passed, so this settlement is closed.
Estimated payout
A pro-rata cash payment from the net settlement fund (no documentation required), or reimbursement of documented out-of-pocket losses, plus credit monitoring; exact cash amounts depend on the number of valid claims.
Proof required?
No documentation is required for the pro-rata cash payment; proof is only needed to claim reimbursement of out-of-pocket losses.
Cost
Always free through the official administrator.
Who qualifies
U.S. residents whose private information (PII and/or PHI) may have been impacted by the incident, including everyone who received notice of the breach.
Background
Onsite Women's Health brings mammography and breast-health screening directly into primary-care and OB-GYN offices, so it holds sensitive medical records for large numbers of patients across many partner clinics. That concentration of health data is exactly what makes specialized medical vendors a recurring target for breaches.
What you need to file
- The notice you received, if any, confirming you're a class member.
- For loss reimbursement: receipts, statements, or dated records of expenses tied to the breach.
- Your contact information and a payment choice.
What you can get
A pro-rata cash payment from the net settlement fund (no documentation required), or reimbursement of documented out-of-pocket losses, plus credit monitoring; exact cash amounts depend on the number of valid claims.
Proof of purchase or loss: No documentation is required for the pro-rata cash payment; proof is only needed to claim reimbursement of out-of-pocket losses.
Free to file. We’re not a law firm.
Unclaimed Guide is an independent guide. We are not a law firm, not a claims-filing service, and not affiliated with Onsite Mammography, LLC d/b/a Onsite Women's Health, the settlement administrator, or the court. You can always file this claim yourself, for free, at the official site above. Never pay a company that offers to file it for you.
Common questions
No proof is required for the pro-rata cash payment — you simply certify you're a class member. Documentation is only needed if you claim reimbursement for out-of-pocket losses. File free at onsitesettlement.com by August 11, 2026.
Yes. Filing is always free through the official settlement administrator at onsitesettlement.com. You never need to pay a law firm or a claims service — we are an independent guide and are not affiliated with the settlement, the administrator, or the court.
No. The deadline (August 11, 2026) has passed, so the window is closed. Deadlines are set by the court; check onsitesettlement.com for any updates.
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