Evergreen Treatment Services Data Breach Investigation

Turke & Strauss LLP, a leading data breach law firm, is investigating Evergreen Treatment Services, which does business as ETS, regarding its recent data breach. The ETS data breach involved sensitive personal identifiable information and protected health information belonging to over 21,000 individuals.


ETS is a non-profit addiction counseling and rehabilitation system in Washington. Founded in 1973, ETS seeks to address substance use disorders and homelessness by offering medication, counseling, primary care, affordable housing options, and a variety of social service resources. Over the years, ETS has specifically focused on treating opioid use in Western Washington, serving nearly 3,000 patients each day. Headquartered in Seattle, Washington, ETS operates three clinics in Renton, Olympia, and Seattle, Washington, with an additional facility targeting on-the-street outreach initiatives. ETS employs more than 200 individuals and manages approximately $11 million in total assets.


Recently, ETS discovered that it had experienced a data breach in which the sensitive personal identifiable information and protected health information in its systems may have been accessed. Through its investigation, ETS determined that an unauthorized actor may have accessed this sensitive information. On February 13, 2023, ETS began contacting individuals whose information may have been impacted. The type of information exposed includes:

  • Name
  • Social Security number
  • Date of birth
  • Address
  • Medical information (e.g., treatment information)

If you are a current or former patient of Evergreen Treatment Services:

We would like to speak with you about your rights and potential legal remedies in response to this data breach. Please fill out the form, below, or contact us at (608) 237-1775 or sam@turkestrauss.com.

If you were impacted by the ETS data breach, you may consider taking the following steps to protect your personal information.

  1. Carefully review the breach notice and retain a copy;
  2. Enroll in any free credit monitoring services provided by Evergreen Treatment Services;
  3. Change passwords and security questions for online accounts;
  4. Regularly review account statements for signs of fraud or unauthorized activity;
  5. Monitor credit reports for signs of identity theft; and
  6. Contact a credit bureau(s) to request a temporary fraud alert.

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