Almeida Law Group is investigating a data breach at Nephrology Associates, M.D., P.A. If you were affected, contact Almeida Law Group.
About Nephrology Associates, M.D., P.A.
Nephrology Associates, M.D., P.A. is a kidney care medical practice specializing in kidney disease treatment and dialysis. The practice operates eight offices throughout the Kansas City metro area, with locations in Kansas City (KS), Olathe, Merriam, Leawood, Overland Park, Lansing, and North Kansas City (MO). Because this is a medical practice treating kidney disease, the records it maintains can include highly sensitive health and personal identification information, making a breach particularly serious for affected patients.
What Happened?
Nephrology Associates, M.D., P.A. was listed in an HHS Office for Civil Rights breach portal report submitted on July 29th, 2026. The filing classifies the incident as a hacking/IT incident affecting a network server. According to the company’s own breach notice, as reported by ClassAction.org, unauthorized access to the practice’s network occurred between January 17th, 2026 and April 9th, 2026. The company determined on July 1st, 2026 that certain information was acquired from its network during that period. Notification letters were sent to affected individuals beginning July 30th, 2026. The HHS filing reports 24,088 individuals affected. The exposed information included names, Social Security numbers, dates of birth, driver’s license or state identification numbers, government identification numbers, treatment and diagnosis information, and health insurance policy information.
Two ransomware groups separately claimed responsibility for attacks on the practice. Dark web monitoring sources and reporting from Dexpose.io indicate that a group called The Gentlemen posted a claim against nephkc.com on March 6th, 2026. A separate group called Insomnia posted a claim on the Tor dark web, first observed on approximately April 5th, 2026 and recorded by Ransomware.live as discovered on April 28th, 2026. These are attacker-side allegations from dark web leak sites and have not been publicly confirmed by Nephrology Associates. The company’s breach notice describes the incident as a hacking/IT incident but does not publicly name any specific threat actor. The timeline of unauthorized access — January 17th through April 9th, 2026 — overlaps with both groups’ claims. Multiple law firms, including Shamis & Gentile P.A. and Migliaccio & Rathod LLP, have announced investigations into potential class action lawsuits, though no lawsuit had been filed as of available reporting.
Key Facts at a Glance
- Company or Organization: Nephrology Associates, M.D., P.A.
- Industry: Healthcare Provider – Nephrology (Kidney Care)
- Location: Kansas City metro area, Kansas and Missouri (HHS filing lists state as KS)
- Incident type: Hacking/IT Incident (Network Server)
- Date of breach: January 17th, 2026
- Date breach discovered: July 1st, 2026
- Date of consumer notification: July 30th, 2026
- Total persons affected: 24,088
- Litigation status: Multiple law firm investigations announced; no class action filed as of available reporting
- Source: HHS OCR Breach Portal; ClassAction.org; ClaimDepot – breach details; Dexpose.io – The Gentlemen claim; Migliaccio & Rathod LLP investigation
What Should You Do?
If you received a notification letter from Nephrology Associates, M.D., P.A., review it carefully for any identity theft protection enrollment offer and note any enrollment deadline. Because Social Security numbers and health information were among the exposed data, consider placing a fraud alert or credit freeze with the three major credit bureaus — Equifax, Experian, and TransUnion — and monitor your credit reports regularly through AnnualCreditReport.com. Watch your financial accounts for unfamiliar activity. Because treatment, diagnosis, and health insurance information was also exposed, review your Explanation of Benefits statements and medical records for any services you did not receive, which could indicate medical identity theft. If you suspect misuse of your information, report it at IdentityTheft.gov.
Your Legal Rights
If your personal or health information was involved in this breach, you may have legal rights depending on the facts of the incident and the law in your state. Almeida Law Group represents consumers in data breach and privacy litigation and can help you evaluate whether you may have a claim. Contact us at (708) 529-5418 or through our contact page for a free case evaluation.
