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California licenses and certifies drug and alcohol detox programs through the Department of Health Care Services (DHCS), Substance Use Disorder Compliance Division, Licensing and Certification Branch, under Title 9 and Title 22 of the California Code of Regulations.
Residential detox facilities are licensed and must carry an ASAM level-of-care designation, while outpatient and intensive outpatient programs are certified rather than licensed.
Managed care plans are separately regulated by the Department of Managed Health Care (DMHC). Publicly funded treatment runs through Medi-Cal, delivered county by county under the Drug Medi-Cal Organized Delivery System (DMC-ODS).
California’s overdose picture is distinct from much of the country. Methamphetamine is involved in more overdose deaths here than any other single drug, and it frequently appears alongside illicit fentanyl in the supply, which makes medically supervised withdrawal important for the polysubstance use common statewide.
At the same time, the state recorded a significant drop in overdose deaths in 2024 after years of increases. Recent policy has reshaped access to care. Proposition 1, passed in March 2024, authorized about $6.4 billion in bonds for behavioral health treatment and housing facilities and restructured how counties fund services.
Alongside it, Governor Newsom’s Master Plan for Tackling the Fentanyl and Opioid Crisis expanded free naloxone distribution, and CalAIM reforms broadened Medi-Cal substance use benefits. When comparing programs, confirming a facility’s current DHCS license or certification is a practical first step to choose a detox center you can trust.
