Integrated Dual Disorder Treatment (IDDT)

Please contact Shannon Blajeski at for more information on IDDT

More on Integrated Dual Disorder Treatment

IDDT was developed by the Dartmouth Psychiatric Research Center in response to the lack of treatment options that addressed both psychiatric and substance use disorder symptomology for adults with dual disorders.  Since the late 1990’s at least 8 studies support the effectiveness of IDDT and it is thus considered an evidence-based practice by the federal Substance Abuse and Mental Health Services Administration (SAMHSA.)

Critical Components include:

WIMHRT IDDT consultants provide targeted organizational-level consultation for program managers interested in implementing this evidence-based practice followed by an intensive on-site team-based training and follow-up consultation.  A baseline fidelity review at approximately 6-months post-startup has been shown to improve implementation efforts and prevent drift from the IDDT model and is recommended.

In 2011, the Washington State Department of Behavioral Health & Recovery funded the implementation of three IDDT pilots developed from existing co-occurring programs in Gray’s Harbor County, Mt. Vernon & Spokane. Contact Shannon Blajeski, WIMHRT Consultant, at for information on additional pilot teams.