Stockton Cardiology Medical Group Data Breach
Last Updated on June 26, 2026
At A Glance
- What's Going On?
- Attorneys need to hear from people affected by the Stockton Cardiology data breach as they investigate whether a class action lawsuit can be filed.
- Does This Cost Anything?
- It costs nothing to get in touch or to talk to someone about your rights.
- What Can I Get?
- If filed and successful, a class action lawsuit could provide consumers with money for any harm resulting from the Stockton Cardiology breach.
Stockton Cardiology Data Breach: Lawsuit Investigation
Attorneys working with ClassAction.org are looking into whether a class action lawsuit can be filed in light of the Stockton Cardiology data breach.
As part of their investigation, they need to hear from individuals who had their information exposed in the incident, including those who received notice of the Stockton Cardiology data breach or otherwise believe they are affected.
Stockton Cardiology Security Incident: What Happened?
Stockton Cardiology, which has offices in Lodi, Stockton, Manteca, Tracy and San Andreas, California, has announced a data breach involving unauthorized access to sensitive information.
According to a sample notification letter (pictured below), the incident was identified on December 15, 2025, when suspicious emails were sent to several employees and subsequently deleted. On January 17, 2026, it was discovered that certain files may have been accessed and removed in the Stockton Cardiology data breach. An investigation was launched to assess the extent of the breach and secure the system.
On February 17, 2026, Stockton Cardiology learned that some of these files had been publicly disclosed following the cybersecurity incident. The information involved could include patient names, mailing and email addresses, and billing records with limited medical details.
What You Can Do After the Stockton Cardiology Data Breach
If your information was exposed in the Stockton Cardiology data breach, attorneys want to hear from you. You may be able to start a class action lawsuit to recover compensation for loss of privacy, time spent dealing with the breach, out-of-pocket costs, and more.
A successful case could also force Stockton Cardiology to ensure they take proper steps to protect the information they were entrusted with.
Stockton Cardiology Data Breach Notice
Published: March 23, 2026
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