Welcome to the new MATSA website.

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: to promote responsible assessment and treatment practices for adults with problematic sexual interests, behavior, or offending.  More about MATSA


Dear Friends and Colleagues:

Registration is now open for our

23rd annual MASOC/MATSA Joint Conference on

April 14-15, 2021.

CLICK HERE to register!  https://cvent.me/7y8ab9  

CLICK the LINK below for the full conference brochure!


23rd Annual Virtual MASOC


Live Virtual Webinar:
Bringing balance to risk assessments: How to score the
Structured Assessment of PROtective factors for violence risk – Sexual Offence version (SAPROF-SO)

MATSA Sponsored
Click here for the flyer: SAProF-TrainingFlyer-4 (pdf)

Presenters: David Thornton, Ph.D., Sharon M. Kelley, Psy.D., Gwenda Miriam Willis, Ph.D.
February 4, 2021 
9:00 am – 4:00 pm (EST)
6.5 CE credits awarded
COST: $99.00 USD
Register in advance for this webinar using the LINK is in the flyer.

Treatment Providers:

The MATSA Resource Directory offers a simple way to identify treatment providers in your area with an easy to use map.

If you are a member of MATSA and would like your information posted on this Directory please contact Timothy Sinn at tim.s@cpcamerica.com or by phone at (508) 889-0587.

Website Address Change:

Please note that the website address which previously hosted the MATSA website, MATSA.org, is no longer affiliated with the MATSA organization. We apologize for any confusion from those who have visited the current MATSA.org website and it’s content which is anathema to the spirit and mission of the MATSA organization. Please update any links to point to the new MATSA.info address