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Drug & Alcohol Rehab — ONTARIO, CA

Drug Rehab Centers in Ontario, California

Find verified addiction treatment programs in Ontario — detox, inpatient, outpatient, and dual diagnosis. Insurance verified free, same-day admissions available.

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Treatment Center Directory
Reviewed by licensed addiction counselors & behavioral health specialists — DRH Clinical Review Team
Updated April 30, 2026
Sources: SAMHSA · NIDA · CDC
If this is a medical emergency, call 911 immediately. For confidential addiction help, call SAMHSA's National Helpline: (800) 662-4357 — free, confidential, 24/7.
Call or Text 988 Crisis Lifeline
Directory

Drug Rehab Centers in Ontario, California

6 verified drug and alcohol rehab facilities serve the Ontario, CA area — offering medical detox, inpatient residential care, partial hospitalization (PHP), intensive outpatient (IOP), standard outpatient, and medication-assisted treatment (MAT) programs.

All facilities in our Ontario directory are sourced from SAMHSA's national treatment locator and verified for active state licensing. When comparing programs, look for CARF or Joint Commission accreditation, licensed clinical staff, and evidence-based treatment methods.

Insurance coverage for addiction treatment in Ontario is protected by federal law. Under the Mental Health Parity Act, your insurer cannot impose stricter limits on addiction treatment than on other medical care. Call (866) 720-3784 for a free benefits verification — our specialists identify covered programs near you and can arrange same-day admission.

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6 results

Aegis Medical Systems Inc

Ontario, California

Aegis Medical Systems Inc (Ontario) located at 125 West F Street, Ontario, CA 91762, United States is an alcohol treatment center providing substance abuse treatment, detoxifica...

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Aegis Treatment Centers LLC

Ontario, California

Aegis Treatment Centers LLC is a Substance Abuse Treatment Services in Ontario, CA. Provided in an Outpatient setting, Aegis Treatment Centers LLC's services include Substance ...

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Bilingual Family Counseling Services

Ontario, California

Bilingual Family Counseling Services (Center for Recovery) located at 317 West F Street, Ontario, CA 91762, United States is an alcohol rehab program providing substance abuse t...

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County of San Bernardino DBH

Ontario, California

In Ontario, CA, County of San Bernardino DBH segments their treatment services based on Mental Health Treatment Services within a Outpatient. Programs and groups are organized ...

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Inland Valley Drug and Alcohol

Ontario, California

Inland Valley Drug and Alcohol (Recovery Services/Caroline House) located at 1646 East Caroline Street, Ontario, CA 91764, United States is an alcohol treatment program providin...

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Inland Valley Drug and Alcohol

Ontario, California

Inland Valley Drug and Alcohol (Recovery Services/Marin Recovery Home) located at 1636 Marin Avenue, Ontario, CA 91764, United States is a drug rehab center providing substance ...

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Your Insurance Must Cover Addiction Treatment
Under the Mental Health Parity and Addiction Equity Act (MHPAEA) and the Affordable Care Act, most insurance plans — including Medicaid and Medicare — are legally required to cover substance use disorder treatment at the same level as other medical conditions. Learn more at SAMHSA.gov or call (866) 720-3784 to verify your benefits free in minutes.
Also in California

Find Rehab in Nearby California Cities

Acton Agoura Hills Alameda Aliso Viejo Alta Altadena All California Rehabs
Trusted Resources

Authoritative Addiction & Recovery Resources

SAMHSA National Helpline
Free, confidential treatment referrals 24/7 — (800) 662-4357
SAMHSA Treatment Locator
Official government database of licensed treatment facilities
NIDA Treatment Research
Evidence-based addiction treatment science from the NIH
CDC Overdose Prevention
Data, statistics, and prevention resources from the CDC
FAQ

Frequently Asked Questions — Drug Rehab in Ontario

How many drug rehab centers are in Ontario, CA?
Our directory lists 6+ verified addiction treatment facilities in the Ontario area, sourced from SAMHSA's national treatment locator and verified for active state licensing. Programs range from medical detox and inpatient residential rehab to outpatient and medication-assisted treatment (MAT). Call (866) 720-3784 for personalized help finding the right fit.
Does insurance cover drug rehab in Ontario?
Yes. Under the Mental Health Parity and Addiction Equity Act (MHPAEA) and the Affordable Care Act, most insurance plans — including Medicaid and Medicare — are legally required to cover substance use disorder treatment at the same level as other medical conditions. Your insurer cannot impose stricter limits on rehab than on other medical care. Call (866) 720-3784 for a free benefits verification — our specialists can confirm exactly what your plan covers within minutes.
What treatment programs are available in Ontario?
Addiction treatment in the Ontario, California area follows a full continuum of care: medical detox (supervised withdrawal, typically 3-7 days), inpatient residential rehab (30-90+ days), partial hospitalization (PHP, 20-30 hours/week), intensive outpatient (IOP, 9-15 hours/week), standard outpatient, medication-assisted treatment (MAT) using Suboxone, Vivitrol, or Methadone, and dual diagnosis treatment for co-occurring mental health conditions. NIDA recommends a minimum of 90 days of combined treatment for the best long-term outcomes.
Can I get same-day admission to a rehab near Ontario?
Yes — same-day admission is available at many facilities in the Ontario area. The fastest path is to call (866) 720-3784 directly. Our specialists verify your insurance in real time, confirm bed availability, and can arrange same-day placement at an appropriate program. This service is completely free and confidential, available 24 hours a day, 7 days a week.
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Where Do Calls Go?

Calls to any general helpline will be answered or returned by one of the treatment providers listed, each of which is a paid advertiser.

Our helpline is available 24 hours a day, 7 days a week at no cost to you and with no obligation for you to enter into treatment. We are committed to providing support and guidance whenever you need it.

In some cases, Drug Rehab Headquarters charges our verified partner a modest cost per call. This fee helps us cover the costs of building and maintaining our website, ensuring that we can continue to offer this valuable service to those in need.

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