The Washington Opioid Treatment Agreement (WTA) is a statewide initiative created to provide safe, effective, and coordinated opioid treatment services for patients in Washington State. The agreement is a collaboration between the Washington State Department of Health, the Washington State Health Care Authority, and the Washington State Medical Association. It is designed to protect the health and safety of patients, to ensure quality and cost-effective care, and to promote the appropriate use of opioids in the treatment of pain. The agreement outlines the responsibilities of all parties involved in the provision of opioid treatment, including prescribers, pharmacists, and health care providers. It also sets forth requirements for patient education, monitoring, and follow-up, as well as compliance with federal and state laws and regulations. There are two types of Washington Opioid Treatment Agreements: the Standard Agreement and the Comprehensive Agreement. The Standard Agreement sets forth requirements for controlled substances prescribing, pharmacy-based opioid treatment programs, and opioid treatment programs that utilize buprenorphine. The Comprehensive Agreement includes additional requirements for opioid treatment programs that provide methadone maintenance therapy.