Understanding your Rectangle Health data breach notification letter
If a Rectangle Health 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
Rectangle Health is a healthcare technology company that specializes in practice management and patient payment solutions, acting as a critical intermediary between healthcare providers and their patients. Given the nature of their services, the company typically collects and stores sensitive patient data, including protected health information, billing records, and financial payment details necessary for processing medical transactions. In 2025, Rectangle Health officially reported a data security incident to the New Hampshire Attorney General, confirming that unauthorized access to their systems occurred. If you have received a formal data breach notification letter from the company, it indicates that your personal information was likely stored within their environment at the time of the incident and may have been compromised.
What to do after the letter
Confirm the notice is genuine
A legitimate Rectangle Health 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 Rectangle Health 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.