Why did you get mail from Rainier Clinical Research Center?
If a Rainier Clinical Research Center 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
Rainier Clinical Research Center reported a data breach on April 3, 2026, potentially exposing highly sensitive personal and medical information belonging to clinical trial participants. This incident means your private data, including health records and identifying details, may now be in the hands of unauthorized actors, creating long-term risks.
Information the filing reports as involved
- Full Name
- Date of Birth
- Social Security Number
- Medical Record Number
- Clinical Trial Participation History
- Health Insurance ID Number
- Diagnosis and Treatment Information
- Contact Information
What to do after the letter
Confirm the notice is genuine
A legitimate Rainier Clinical Research Center notice references the specific incident reported to the Washington 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.
Find out whether you have a claim
Whether the Rainier Clinical Research Center breach gives you a legal claim depends on the facts. A free, no-obligation case review will tell you where you stand — there is no cost and no commitment to find out.
This page summarizes a data breach reported to the Washington Attorney General for informational purposes and is attorney advertising. It does not create an attorney-client relationship. DataBreachLegalTeam.com does not provide legal advice through this page.