Assertive Community Treatment (ACT) Assertive Community Treatment (ACT) is a way of delivering a full range of services to people who have been diagnosed with a serious mental illness. With ACT, clients get help taking care of their basic needs — taking medications, getting up and getting through the day. ACT teams work closely with clients to see which medications work best for them. They help clients remain in the least restrictive environment as possible by utilizing community resources and living independently. For more information, including eligibility and contact information, please click here.