Understanding your Ciox Health LLC dba Datavant Group data breach notification letter
If a Ciox Health LLC dba Datavant Group letter arrived in your mailbox, here is what it means, why you received it, and the free steps you can take right now.
Why you received this letter
Ciox Health LLC, doing business as Datavant Group, is a prominent healthcare technology company specializing in the management, exchange, and secure processing of medical records and health data. Given their role in the healthcare ecosystem, they typically collect and store highly sensitive information, including protected health information, clinical data, and personal identifiers necessary for medical billing and insurance coordination. This data breach was officially reported to the New Hampshire Attorney General in 2025, confirming that unauthorized parties may have accessed systems containing personal information. If you received a data breach notification letter from the company, it indicates that your specific information was involved in this incident. This notice serves to inform you of the nature of the exposure and the steps the company is taking to address the security compromise.
What to do after the letter
Confirm the notice is genuine
A legitimate Ciox Health LLC dba Datavant Group notice references the specific incident reported to the New Hampshire Attorney General and describes which categories of your information were involved. Compare the letter against the public filing before acting on any links or phone numbers it contains.
Keep the letter — it is your proof of connection
The notification letter is the document that ties your personal information to this incident. Keep the original and photograph it. If you later request a case review, this letter is the strongest evidence that you were among the affected individuals.
Protect your accounts and credit
Depending on what was exposed, consider a free credit freeze with all three bureaus, new passwords for reused credentials, and monitoring of financial statements. These steps are free and do not require you to wait for anyone's permission.
Check the record against the public filing
You can verify the Ciox Health LLC dba Datavant Group incident against the filing reported to the New Hampshire Attorney General. This registry summarizes what was filed; it does not provide legal advice.
This page summarizes a data breach reported to the New Hampshire Attorney General for informational purposes. DataBreachInformation.com is a neutral reference registry and does not provide legal advice.