The Substance Abuse and Mental Health Services Administration (SAMHSA)

The Substance Abuse and Mental Health Services Administration (SAMHSA), an agency of the U.S. Department of Health and Human Services (HHS), was established by an act of Congress in 1992. SAMHSA was created as a services agency to focus attention, programs, and funding on improving the lives of people with or at risk for mental and substance abuse disorders (SAMHSA 2010).
www.samhsa.gov

The American Association for the Treatment of Opioid Dependence (AATOD)

The American Association for the Treatment of Opioid Dependence (AATOD) was founded in 1984 to enhance the quality of patient care in treatment programs by promoting the growth and development of comprehensive methadone treatment services throughout the United States (AATOD 2004).
www.aatod.org/fact_methadone.html
 

National Alliance for Medication Assisted Recovery

NAMA is an organization of methadone patients, healthcare professionals, friends, and associates working together for greater public understanding and acceptance of methadone treatment (NAMA 2010). 
www.methadone.org

National Institute on Drug Abuse

NIDA's mission is to lead the Nation in bringing the power of science to bear on drug abuse and addiction.  This charge has two critical components.  The first is the strategic support and conduct of research across a broad range of disciplines.  The second is ensuring the rapid and effective dissemination and use of the results of that research to significantly improve prevention, treatment and policy as it relates to drug abuse and addiction (NIDA 2010).
www.drugabuse.gov/nidahome.html