about ATSA and MATSA

The Association for the Treatment of Sexual Abusers (ATSA) is a non-profit, interdisciplinary organization that was incorporated in 1984 by a small group of clinicians in Oregon who were working with sex offenders. ATSA remains dedicated to principles that foster research and information exchange, further professional education, and advance professional standards and practice in the field of sex offender evaluation and treatment. ATSA is now an international organization with over one thousand members committed to the prevention of sexual assault through effective management of sex offenders. Click here for an application for ATSA.

The ATSA offices are located at 4900 S.W. Griffith Drive, Suite 274, Beaverton, Oregon, 97005. The telephone number is 503-643-1023, fax is 503-643-5084, or you can email ATSA.

The Massachusetts Association for the Treatment of Sexual Abusers, Inc. (MATSA) is a non-profit local chapter of the national parent organization. It was formed in 1995 to carry out the mission of ATSA at the state level. MATSA currently has over fifty members in Massachusetts and surrounding states. Click here for information about MATSA membership.

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