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Founded in 1979, HAART is a community focused not-for-profit collective of clinicians specializing in medication assisted treatment (MAT) utilizing opioid replacement therapy, medical monitoring, professional counseling and therapy, case management and advocacy. 

We currently provide treatment for problematic opioid use (this includes heroin and prescription analgesics such as oxycodone, morphine, hydromophone, fentanyl, and others), poly-drug use, co-occurring disorders, selective pain management, and after care.  We offer both maintenance and long term outpatient detoxification. 

Our clinicians are personally and professionally invested in providing mission driven care.  

Our clinic is conveniently located on the San Leandro, Castro Valley and Hayward border and is easily accessible via car by 580 or 80 (via 238), by bus, and/or by BART train through either the Bay Fair or Hayward stations. 

20094 Mission Blvd.
Hayward, CA. 94541

 HAART is accredited
 by the Joint Commission,

 "The Gold Standard in Behavioral Health"

Primarily serving Alameda County and the extended East Bay and greater San Francisco Bay Area (Hayward, Castro Valley, San Lorenzo, Dublin, Pleasanton, Dublin, Union City, Fremont, Livermore, Milpitas, San Ramon, Danville, Berkeley, Oakland, San Jose, Tracy, Brentwood, and Antioch).