Substance Use Treatment in Chatsworth, CA

Rancho San Antonio

What Does Rancho San Antonio Offer?

Rancho San Antonio is a substance use treatment facility at 21000 Plummer Street, Chatsworth, California, offering intensive outpatient and outpatient treatment. It accepts Medicaid. Medication treatment: buprenorphine and naltrexone.

Reviewed by Michael Rupe ·October 2, 2026

21000 Plummer Street
Chatsworth, CA 91311

Listed in SAMHSA's FindTreatment.gov, checked October 2026. A listing is not an endorsement. Call to confirm services, openings and costs before you go.

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Treatment facility (SAMHSA listing)This facility

Types of Care at Rancho San Antonio

Outpatient
Intensive outpatient treatment
Outpatient methadone/buprenorphine or naltrexone treatment
Regular outpatient treatment

Payment, Insurance and Help Paying

Federal, or any government funding for substance use treatment programs
Medicaid

Medication Treatment

Buprenorphine maintenance
Prescribes buprenorphine
Prescribes naltrexone
Relapse prevention with naltrexone
Accepts clients using MAT but prescribed elsewhere
Acamprosate (Campral®)
Disulfiram
Buprenorphine with naloxone
Buprenorphine without naloxone
Naltrexone (oral)
Naltrexone (extended-release, injectable)

Who the Program Serves

Adolescents
Young adults
Pregnant/postpartum women
Members of military families
Criminal justice (other than DUI/DWI)/Forensic clients
Clients with co-occurring mental and substance use disorders
Clients who have experienced sexual abuse
Clients who have experienced intimate partner violence, domestic violence
Clients who have experienced trauma
Ages: Children/Adolescents
Ages: Young Adults
Accepts: Female
Accepts: Male

Language Services

Sign language services for the deaf and hard of hearing
Spanish
Other languages (excluding Spanish)
Tagalog

Licensing and Accreditation

State substance use treatment agency
State department of health
Commission on Accreditation of Rehabilitation Facilities (CARF)
Council on Accreditation (COA)

Treatment Approaches

Anger management
Brief intervention
Cognitive behavioral therapy
Contingency management/motivational incentives
Community reinforcement plus vouchers
Motivational interviewing
Matrix Model
Relapse prevention
Substance use disorder counseling
Trauma-related counseling
Telemedicine/telehealth therapy
12-step facilitation

Assessment, Recovery Support and Other Services

Comprehensive mental health assessment
Comprehensive substance use assessment
Interim services for clients
Outreach to persons in the community
Complete medical history/physical exam
Screening for tobacco use
Screening for substance use
Screening for mental disorders
Professional interventionist/educational consultant
Discharge Planning
Naloxone and overdose education
Outcome follow-up after discharge
Self-help groups
Assistance with obtaining social services
Recovery coach
Case management service
Domestic violence services, including family or partner
Early intervention for HIV
Mental health services
Social skills development
Integrated primary care services
Suicide prevention services
Drug or alcohol urine screening

Before you commit, confirm openings, costs and the program's state license. How to choose a rehab you can trust lists the questions to ask when you call, and addiction treatment in California lists the state's treatment agency.