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The California MAT Expansion Project Overview

In an effort to address the opioid epidemic throughout the state, the California Department of Health Care Services (DHCS) is implementing the California Medication Assisted Treatment (MAT) Expansion Project.  The California MAT Expansion Project aims to increase access to MAT, reduce unmet treatment need, and reduce opioid overdose related deaths through the provision of prevention, treatment, and recovery activities. The California MAT Expansion Project focuses on populations with limited MAT access, including rural areas and American Indian & Alaska Native tribal communities.

The California MAT Expansion Project is funded by the SAMHSA State Targeted Response (STR) grant and the SAMHSA State Opioid Response (SOR) grant. To learn more about the MAT Expansion Project implementation efforts, please review the resources below:


For questions regarding California’s MAT Expansion Project, email

If you think you are having an emergency for an unexpected medical condition, including a psychiatric emergency medical condition, call 911 or go to the nearest emergency room for help.

If you or someone you know is in crisis, please call 911 or the National Suicide Prevention Lifeline at 1-800-273-TALK (8255).

Last modified on: 2/28/2019 8:14 AM