We list 129 methadone clinics in California, based on SAMHSA's FindTreatment.gov data, with the most in Los Angeles (6), Fresno (5), and San Francisco (5). Compare services, insurance accepted and accreditation, or call for free help choosing.
Methadone Clinic (OTP): the basics
A methadone clinic, formally called an opioid treatment program (OTP), is a federally certified clinic that treats opioid use disorder with medication, mainly methadone. You visit to take a supervised daily dose and get counseling and medical care. Under 2024 federal rules, stable patients can earn more take-home doses sooner than before. Read the full guide →
Tarzana, CA 91356
Joint Commission accredited · CARF accredited · COA accredited
Levels of care
Payment accepted
Medicaid · Medicare · Private insurance +4 more
“Get help” calls our free helpline, not this facility.
Ontario, CA 91762
CARF accredited
Levels of care
Payment accepted
Medicaid · Medicare · Private insurance +3 more
“Get help” calls our free helpline, not this facility.
Pasadena, CA 91104
CARF accredited
Levels of care
Payment accepted
Medicaid · Medicare · Private insurance +2 more
“Get help” calls our free helpline, not this facility.
El Monte, CA 91731
CARF accredited
Levels of care
Payment accepted
Medicare · Private insurance · Self-pay +1 more
“Get help” calls our free helpline, not this facility.
Ceres, CA 95307
CARF accredited
Levels of care
Payment accepted
Medicaid · Medicare · Private insurance +2 more
“Get help” calls our free helpline, not this facility.
Lodi, CA 95242
CARF accredited
Levels of care
Payment accepted
Medicaid · Medicare · Private insurance +3 more
“Get help” calls our free helpline, not this facility.
Stockton, CA 95206
CARF accredited
Levels of care
Payment accepted
Medicaid · Medicare · Private insurance +3 more
“Get help” calls our free helpline, not this facility.
Atascadero, CA 93422
CARF accredited
Levels of care
Payment accepted
Medicaid · Medicare · Private insurance +4 more
“Get help” calls our free helpline, not this facility.
Chico, CA 95926
CARF accredited
Levels of care
Payment accepted
Medicaid · Medicare · Private insurance +3 more
“Get help” calls our free helpline, not this facility.
Hesperia, CA 92345
CARF accredited
Levels of care
Payment accepted
Medicaid · Medicare · Private insurance +4 more
“Get help” calls our free helpline, not this facility.
Fresno, CA 93726
CARF accredited
Levels of care
Payment accepted
Medicaid · Medicare · Private insurance +4 more
“Get help” calls our free helpline, not this facility.
Chatsworth, CA 91311
CARF accredited · COA accredited
Levels of care
Payment accepted
Medicaid · Medicare · Private insurance +1 more
“Get help” calls our free helpline, not this facility.
Corona, CA 92882
CARF accredited
Levels of care
Payment accepted
Medicaid · Medicare · Private insurance +3 more
“Get help” calls our free helpline, not this facility.
Menlo Park, CA 94025
CARF accredited
Levels of care
Payment accepted
Medicaid · Medicare · Private insurance +4 more
“Get help” calls our free helpline, not this facility.
Los Angeles, CA 90011
CARF accredited
Levels of care
Payment accepted
Medicaid · Medicare · Private insurance +4 more
“Get help” calls our free helpline, not this facility.
San Marcos, CA 92069
CARF accredited
Levels of care
Payment accepted
Medicaid · Medicare · Private insurance +4 more
“Get help” calls our free helpline, not this facility.
Colton, CA 92324
CARF accredited · COA accredited · NCQA accredited
Levels of care
Payment accepted
Medicaid · Medicare · Private insurance +4 more
“Get help” calls our free helpline, not this facility.
El Cajon, CA 92020
CARF accredited
Levels of care
Payment accepted
Medicaid · Medicare · Private insurance +4 more
“Get help” calls our free helpline, not this facility.
Oakland, CA 94605
Joint Commission accredited
Levels of care
Payment accepted
Medicaid · Medicare · Private insurance +4 more
“Get help” calls our free helpline, not this facility.
Calexico, CA 92231
CARF accredited
Levels of care
Payment accepted
Medicaid · Medicare · Private insurance +4 more
“Get help” calls our free helpline, not this facility.
El Centro, CA 92243
CARF accredited
Levels of care
Payment accepted
Medicaid · Medicare · Private insurance +4 more
“Get help” calls our free helpline, not this facility.
San Diego, CA 92123
CARF accredited
Levels of care
Payment accepted
Medicaid · Medicare · Private insurance +2 more
“Get help” calls our free helpline, not this facility.
San Francisco, CA 94121
Joint Commission accredited · CARF accredited
Levels of care
Payment accepted
State-funded
“Get help” calls our free helpline, not this facility.
Los Angeles, CA 90057
CARF accredited
Levels of care
Payment accepted
Medicaid · Medicare · Private insurance +3 more
“Get help” calls our free helpline, not this facility.
Richmond, CA 94804
CARF accredited
Levels of care
Payment accepted
Medicaid · Medicare · Private insurance +3 more
“Get help” calls our free helpline, not this facility.
Porterville, CA 93257
CARF accredited
Levels of care
Payment accepted
Medicaid · Medicare · Private insurance +4 more
“Get help” calls our free helpline, not this facility.
La Puente, CA 91744
CARF accredited
Levels of care
Payment accepted
Medicaid · Medicare · Private insurance +3 more
“Get help” calls our free helpline, not this facility.
Inglewood, CA 90301
CARF accredited
Levels of care
Payment accepted
Medicaid · Medicare · Private insurance +3 more
“Get help” calls our free helpline, not this facility.
Delano, CA 93215
CARF accredited
Levels of care
Payment accepted
Medicaid · Medicare · Private insurance +2 more
“Get help” calls our free helpline, not this facility.
Merced, CA 95340
CARF accredited
Levels of care
Payment accepted
Medicaid · Medicare · Private insurance +3 more
“Get help” calls our free helpline, not this facility.
We list 129 methadone clinics in California, based on SAMHSA's FindTreatment.gov data (updated October 2026).
The most listings are in Los Angeles (6), Fresno (5), and San Francisco (5).
Look for state licensing and accreditation (The Joint Commission or CARF), the right level of care for your needs, evidence-based therapies, and insurance compatibility. Read our guide to choosing a rehab or call (877) 847-2855 to talk it through.
Most private plans and Medicaid cover substance use treatment when it's medically necessary, but benefits vary by plan and network. Call (877) 847-2855 for a free, confidential benefits check.
Source: SAMHSA FindTreatment.gov, data updated October 2026. Listings are not endorsements.
