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Investigation OpenMassachusetts AG Filing · May 22, 2026

Jeffrey Lisiecki MD PLLC Data Breach Notification Letter, Notice & Filing Details

Jeffrey Lisiecki MD PLLC operates as a specialized medical practice, delivering professional healthcare services, clinical consultations, and specialized patient treatments. Because of the nature of its operations, this medical practice routinely collects, processes, and maintains an extensive volume of highly sensitive protected health information and personally identifiable information. Patients trust healthcare providers not only with their physical wellbeing but also with their most private personal and financial records, requiring the establishment of a secure digital environment for appointment scheduling, medical histories, insurance processing, and billing operations. In 2026, Jeffrey Lisiecki MD PLLC reported a significant data security incident to the Massachusetts Attorney General, indicating unauthorized access to its network or systems. While specific technical forensics continue to be evaluated, security incidents affecting independent medical practices typically involve sophisticated cyberattacks such as unauthorized intrusion into electronic health record databases, ransomware deployments, or vulnerabilities within third-party medical billing and administrative vendor networks. Healthcare entities have increasingly become prime targets for cybercriminals seeking to exploit legacy infrastructure or compromise interconnected administrative portals. The exposure resulting from the Jeffrey Lisiecki MD PLLC security incident involves deeply sensitive categories of personal and medical data, which can include full names, dates of birth, Social Security numbers, health insurance policy details, medical record numbers, and clinical treatment information. Unlike standard commercial data breaches, the compromise of protected health information carries severe, long-term risks. Exposure of medical diagnoses, treatment histories, and health insurance identifiers opens victims to targeted medical fraud, unauthorized use of healthcare services, prescription fraud, and severe medical identity theft that can distort health records and compromise future care. Furthermore, the inclusion of core identifiers like Social Security numbers exposes individuals to perpetual risks of financial fraud, tax identity theft, and unauthorized credit applications. Under federal and state law, including the Health Insurance Portability and Accountability Act and Massachusetts data security regulations, healthcare providers like Jeffrey Lisiecki MD PLLC have a strict legal duty to implement robust administrative, physical, and technical safeguards to protect patient data. These regulatory frameworks require continuous network monitoring, data encryption, strict access controls, and regular security audits. The occurrence of a data breach of this magnitude serves as a strong indicator that reasonable security measures may have been inadequate or improperly maintained, potentially constituting a failure of the provider's legal obligations to safeguard confidential medical records. Receiving a data breach notification letter from Jeffrey Lisiecki MD PLLC serves as an official acknowledgment that your private information was compromised due to inadequate security practices. Under state and federal law, affected individuals possess the legal standing to participate in a class action lawsuit seeking accountability, compensation, and enhanced credit and medical monitoring services. You are not required to demonstrate actual financial loss or identity theft to pursue a claim. Our law firm handles data breach and class action cases on a contingency fee basis, meaning you pay no out-of-pocket costs or attorney fees unless we successfully recover compensation on your behalf.

Massachusetts
State Filed
May 22, 2026
Date Filed

About the Notice You Received

About the Jeffrey Lisiecki MD PLLC Data Breach Notification Letter

This case page tracks a Massachusetts public filing connected to Jeffrey Lisiecki MD PLLC, filed May 22, 2026. If you received a data breach notification letter, notice, or mailing from this company, keep it with the date it was received and any enrollment information it contains.

The case record identifies the information described in the filing as potentially exposed. The recorded jurisdiction is Massachusetts, where M.G.L. c. 93H governs breach notifications.

DataBreachCaseReview.com focuses on attorney-led reviews of notification letters. A review can help you understand the information in your notice, document questions for the legal team, and assess potential next steps. It does not guarantee that a lawsuit has been filed or that you will qualify for a claim.

This notice may also be referred to as:

  • Data breach notification letter
  • Security incident notice
  • Data breach notice
  • Breach notification mailing
  • Consumer data breach letter
  • Personal information breach notice
  • Written notice of data breach
  • Data breach alert letter

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Why This Breach Matters

What Jeffrey Lisiecki MD PLLC Held About You

Medical clinics and physician practices store protected health information alongside financial data — including insurance policy numbers, Social Security numbers, payment card details, and full medical histories. This combination of medical and financial data makes clinic breaches particularly high-value for fraudsters. Victims may face unauthorized insurance claims, prescription fraud, or traditional identity theft using the personal information on file.

Massachusetts residents are protected by M.G.L. c. 93H, which gives you the right to pursue legal remedies when a company fails to adequately protect your data.

Common Questions

About the Jeffrey Lisiecki MD PLLC Case

I received a Jeffrey Lisiecki MD PLLC breach notice — does it mean my data was stolen?

Yes. Receiving a Jeffrey Lisiecki MD PLLC data breach letter, notice, or notification mailing means your personal information was accessed or exposed without authorization. Companies are only required to send these notices when a confirmed breach occurred affecting your data specifically.

Is there a deadline to act after receiving my Jeffrey Lisiecki MD PLLC notification letter?

Yes. Massachusetts and federal law impose statutes of limitations on data breach claims. Once a class action lawsuit is filed by another attorney, the window to be a named plaintiff typically closes quickly. Submitting a free case review now ensures you are positioned before those windows pass. There is no cost and no obligation to find out if you qualify.

How much does it cost to pursue a claim?

Nothing upfront. Representation is 100% contingency-based — a fee is only collected if your case results in compensation. If there is no recovery, you owe nothing at any stage.

Why Request a Jeffrey Lisiecki MD PLLC Case Review?

Your Notification Letter Is Evidence

Jeffrey Lisiecki MD PLLC was required by law to notify you because your personal data was compromised. That letter is evidence of harm — and the foundation for a legal claim.

Statutes of Limitation Apply

Data breach claims have deadlines. The sooner you act after receiving your letter, the better positioned you are to participate and recover.

Class Actions Level the Playing Field

By joining with other Jeffrey Lisiecki MD PLLC letter recipients, you have access to legal resources that would be too costly to pursue individually.

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You never pay attorney fees out of pocket. Our representation is 100% contingency-based — we only get paid if you recover compensation.

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