Drug & Alcohol Rehab in California

Looking for drug and alcohol rehab in California? Senova lists 50 verified SAMHSA-listed substance use treatment providers drawn directly from SAMHSA's FindTreatment.gov national directory. Information is refreshed monthly.

About drug and alcohol rehab in California

Substance use treatment ranges from short-term outpatient counseling to long-term residential rehab and medication-assisted treatment. The right level of care depends on the substance, severity, mental-health co-occurrence, and home support.

Services typically offered

• Outpatient counseling
• Intensive outpatient programs (IOP)
• Partial hospitalization (PHP)
• Residential / inpatient rehab
• Medication-assisted treatment (methadone, buprenorphine, naltrexone)
• 12-step facilitation and group therapy

Insurance, Medicare, and Medicaid coverage

Most providers accept some combination of Medicaid, Medicare (limited), private insurance, sliding-scale self-pay, and state-funded coverage for those without insurance. Federal parity laws require most plans to cover addiction treatment at the same level as physical health care.

Medi-Cal covers drug and alcohol rehab through the Home and Community-Based Alternatives (HCBA) waiver program. To qualify, residents typically need to meet the financial threshold (about 138% FPL ($1,732/month for an individual in 2026)) and have a documented care need that would otherwise require nursing-facility-level care. Applications go through California Department of Health Care Services (DHCS), which is also the licensing authority for these providers.

California Medicaid & eligibility deep dive

Eligibility for Medi-Cal

To qualify for drug and alcohol rehab under Medi-Cal, applicants generally need to meet two criteria: financial eligibility and a documented care need. Financial eligibility is based on income — typically 138% FPL ($1,732/month for an individual in 2026) — and on countable assets, usually capped around $2,000 for an individual (with separate rules for spouses). The care-need test typically requires a level-of-care assessment showing the applicant would need nursing-facility-level care without home- and community-based support.

The Home and Community-Based Alternatives (HCBA) waiver program

California's primary vehicle for drug and alcohol rehab coverage is the Home and Community-Based Alternatives (HCBA) waiver. Covered services typically include outpatient counseling, intensive outpatient programs, partial hospitalization, residential treatment for qualifying conditions, medication-assisted treatment for substance use disorder, and crisis intervention. Some programs require pre-authorization through a managed-care organization.

How to apply

1. Complete the Medicaid application through California Department of Health Care Services (DHCS) (www.dhcs.ca.gov/), by phone, in person at a local office, or through healthcare.gov.
2. Provide income documentation (pay stubs, tax returns, Social Security benefit letters), bank statements, and proof of citizenship or legal residency.
3. Once enrolled in Medicaid, request a long-term services and supports (LTSS) assessment to determine eligibility for the Home and Community-Based Alternatives (HCBA) waiver.
4. If approved, you can choose any participating drug and alcohol rehab provider — the ones listed below all accept Medicaid where they have contracts.

Application timelines vary: Medicaid itself can be approved in 30–45 days for most applicants, while waiver enrollment may take 60–180 days due to assessments and waitlists. Some California regions have shorter waitlists than others — typically urban metros move faster than rural counties.

California drug and alcohol rehab by the numbers

• 50 verified SAMHSA-listed substance use treatment providers across California.
• Sourced from SAMHSA FindTreatment.gov (the federal substance use & mental health directory), refreshed monthly.
• Medi-Cal is California's primary public payer for drug and alcohol rehab.
• Average wait time to start care varies — urban metros generally start within 7–14 days; rural counties may take 30+ days.

How much does drug and alcohol rehab cost in California?

Costs are 2026 estimates. Verify with the specific provider before scheduling.

How to choose a drug and alcohol rehab provider

When you compare drug and alcohol rehab providers, focus on five things: (1) certification status (Medicare- or Medicaid-certified for clinical care; SAMHSA-listed for behavioral health), (2) services offered relative to the specific need, (3) which insurance plans and Medicaid waivers they accept, (4) how quickly they can start, (5) patient and family reviews where available. Reputable providers explain coverage, costs, and care plans up front; high-pressure sales tactics are a red flag.

Before signing a care agreement, ask for the answers to these questions in writing: which services are billed to Medicare/Medicaid versus billed to you out of pocket; who is the primary care coordinator; how the agency handles after-hours calls and emergencies; the typical response time for new requests; and two or three references from current patients or families. Providers who refuse to share references are a yellow flag — keep looking.

Related guides

• State-by-state Medicaid & HCBS guide
• How to apply for Medicaid and HCBS waivers
• SAMHSA FindTreatment.gov (official directory)
• 988 Suicide & Crisis Lifeline (24/7)

What you'll find on this page

This page covers every drug and alcohol rehab provider with a verified address in California. For a tighter view, check the city pages for specific California cities below. Click any provider's name below to view their full profile — address, phone, services, ownership, certification details, and how to contact them. Senova never charges patients or families for these listings, and providers cannot pay to appear higher on this page.

About this data

Senova is a free, independent directory of care providers. We do not run any of the agencies listed below — we surface them from authoritative federal data so you can find them faster. Our data source is SAMHSA FindTreatment.gov. If you spot outdated or incorrect information, the source dataset is publicly auditable and refreshed by the federal government on a monthly basis. To request a correction directly, contact SAMHSA at 1-877-SAMHSA-7 or the provider directly.