San Mateo has 53 SAMHSA-verified treatment facilities providing medical detox, inpatient and residential care, outpatient therapy (IOP/PHP), and medication-assisted treatment (MAT). Every listing is sourced from the Substance Abuse and Mental Health Services Administration's official Behavioral Health Treatment Services Locator.
What to expect from rehab in San Mateo
- Medical detox (3–7 days) — 24/7 medically supervised withdrawal for alcohol, opioids, benzodiazepines. Vital in San Mateo for severe physical dependence.
- Inpatient/residential (28–90 days) — immersive live-in programs, usually the highest success rates for severe addiction.
- Partial hospitalization (PHP) — structured daytime treatment (20+ hours/week) with evenings at home or sober living.
- Intensive outpatient (IOP) — 3–5 sessions per week (9–12 hours) while maintaining work or family obligations.
- Medication-assisted treatment (MAT) — FDA-approved medications (buprenorphine, methadone, naltrexone) combined with counseling. Evidence-based gold standard for opioid use disorder.
Paying for treatment in San Mateo
Under the Mental Health Parity and Addiction Equity Act, most private insurance plans must cover addiction treatment at the same level as medical care. California has expanded Medicaid under the ACA, so low-income adults can access treatment through the state Medicaid program. For uninsured residents of San Mateo, options include SAMHSA block-grant-funded centers, sliding-scale fees, payment plans, and state-funded programs. Call SAMHSA's National Helpline at 1-800-662-HELP (free, 24/7) for local referrals.
How to choose a San Mateo rehab center
- Accreditation — CARF or Joint Commission accreditation indicates verified quality and safety standards.
- Evidence-based methods — CBT, DBT, motivational interviewing, contingency management, MAT.
- Specialized tracks — dual-diagnosis (co-occurring mental health), veterans, adolescents, LGBTQ+, gender-specific programs.
- Aftercare planning — quality facilities provide structured transition plans, alumni groups, and relapse-prevention support.
- Visit or call 2–3 centers — compare intake processes, ask about outcomes, verify insurance before committing.
Ready to compare? Search all San Mateo facilities, browse California statewide, or read our recovery guides on insurance, cost, and what to expect in treatment.