Nephrology Associates Data Breach Compromises Personal and Medical Information

Nephrology Associates, P.C., a specialty medical practice providing kidney care in the greater Bridgeport, Connecticut area, has disclosed a data breach involving a ransomware attack that occurred on Sept. 8, 2026.

The company reported the incident to the Massachusetts Office of Consumer Affairs and Business Regulation on Nov. 10, 2026, and posted a notice on its website. Nephrology Associates began notifying affected consumers by written notice on Nov. 6, 2026.

On Sept. 8, 2026, Nephrology Associates experienced a ransomware incident that involved unauthorized access to a server containing patient and employee information. The company discovered the breach on the same day.

Nephrology Associates engaged independent cybersecurity forensic experts to investigate the incident. The investigation determined that files stored on the affected server were accessible to the unauthorized party.

The company noted that the incident did not affect its electronic health record system.

The types of information that may have been exposed include names, Social Security numbers, other government-issued identification numbers, health and medical information, health insurance information (such as Medicare identification numbers, Medicaid identification numbers and private insurance identification numbers) and other payment information.

Nephrology Associates' response to the breach

Nephrology Associates is offering complimentary access to Experian IdentityWorks for 24 months. Enrollment must be completed by Feb. 28, 2027.

For questions about the incident or assistance with identity restoration, affected individuals can contact Nephrology Associates' dedicated and confidential call center at 1-833-918-5105. The call center is available Monday through Friday from 9 a.m. to 9 p.m. Eastern Time, excluding major U.S. holidays. The response line will remain available for 90 days from the date of the notification letter.