1,429 Drug & Alcohol Rehabs in California

Sober Nation lists 1,515 treatment centers across California — the largest inventory of any state in our directory. They cluster where the population and the private-pay market do. Los Angeles leads with 103 listed centers, followed by San Diego (49), Costa Mesa (41), San Francisco (38), Long Beach (28), Santa Ana (27), Fresno (25), Malibu (25), Bakersfield (24), and San Jose (24). A few of those names are telling: Costa Mesa and Malibu are comparatively small cities, yet they rank near the top, which reflects the coastal concentration of private residential care rather than local demand alone. Large Central Valley cities, by contrast, show fewer listings relative to their populations — a rough proxy for the access gap between coastal and inland California.

These directory counts describe supply, not need. An estimated 5.6 million Californians aged 12 and older — about 17% — met the criteria for a past-year substance use disorder in 2022–2023, and roughly 81% of those classified as needing substance use treatment did not receive it (SAMHSA NSDUH, 2022–2023). In 2023, California recorded 11,359 drug overdose deaths — an age-adjusted rate of 29.4 per 100,000 residents — and 69% involved an opioid; fentanyl alone was involved in 7,137 deaths, about 91% of the state's opioid-related overdose deaths (CDPH, 2023).

Treatment is organized into levels of care, and most people pass through more than one. The percentages below show how common each level is among California's listed centers.

• Detox (42%) — medically supervised withdrawal, typically the first step when there is physical dependence on alcohol or opioids.
• Residential / inpatient (46%) — living on-site around the clock, for people who need distance from their usual environment.
• Outpatient (58%) — the most widely listed level; you live at home and attend scheduled sessions, which suits milder cases or a step down after residential.
• Medication-assisted treatment (43%) — methadone, buprenorphine, or naltrexone paired with counseling, mainly for opioid and alcohol use disorders.
• Aftercare (84%) — the ongoing support after formal treatment: alumni groups, continued therapy, and relapse-prevention planning.

There is no single right starting point. It really goes on a case-by-case basis, and a proper clinical assessment should match the level of care to your situation rather than the other way around.

Cost is often the deciding factor, and California's listed centers span a wide range. About 51% accept Medicaid — in California that program is Medi-Cal, which covers substance use disorder treatment for eligible low-income residents (California DHCS). Roughly 24% accept Medicare, which matters for adults 65 and older and some younger people with disabilities. Many facilities also work with private insurance, and federal and state parity rules generally require plans that cover behavioral health to do so on par with medical and surgical care (federal MHPAEA, U.S. Department of Labor).

Actual prices vary enormously — a luxury coastal residential program can cost many times what an outpatient or county-funded program charges. Before you enroll, confirm precisely what your plan covers, ask for the total out-of-pocket estimate, and have the facility verify your benefits in writing. If you are uninsured, do not assume treatment is out of reach: ask about sliding-scale fees, county behavioral health programs, and whether you qualify for Medi-Cal. You are entitled to clear answers before signing anything.

A few California-specific resources are worth bookmarking. The state's SAMHSA-designated Single State Agency for substance use services is the California Department of Health Care Services (DHCS), which administers Medi-Cal behavioral health benefits and points residents to county treatment programs. NAMI California, the state chapter of the National Alliance on Mental Illness, offers education, support groups, and a warmline for families dealing with co-occurring mental health and substance use conditions. The 988 Suicide & Crisis Lifeline connects anyone in California to trained crisis counselors by phone or text, 24/7, including help during substance use crises. Your county behavioral health department is also a practical entry point for public and Medi-Cal-funded care, often through a 24-hour access line. When you are not sure where to begin, start with your county or 988.