Substance Use in California: Prevalence and Treatment uses the most recent data available to provide an overview of substance use and addiction in California. Topics include prevalence of substance use, emergency department visits, deaths, and treatment.

Key findings include:

The death rate from fentanyl increased 10-fold from 2015 to 2019. The rate of prescription opioid deaths fell 30% from 2011 to 2019.
The number of amphetamine-related emergency department visits increased nearly 50% between 2018 and 2020. The number of non-heroin-related opioid ED visits more than doubled in the same period.
California’s Drug Medi-Cal Organized Delivery System pilot program has been implemented in 37 counties, which represent 96% of the state’s Medi-Cal population.
Between 2017 and 2019 the number of facilities offering residential care for substance use treatment grew by 68%, and the number of facilities offering hospital inpatient care more than doubled.
Approximately 40% of commercial HMO and PPO health plan members with an alcohol or other drug dependence diagnosis received care that met the national quality standard of an initial treatment visit within 14 days of diagnosis.   Link: Author: California Health Care Foundation