Outpatient Addictions Services

Addiction is a disease. Together let's find the strength to regain control of your life.

Outpatient Addictions Service (OAS)

This program is designed to help people get sober and maintain recovery. We offer medication, as well as individual and group counseling several days a week. Services are for people 18 and older.

Intake: Our "walk-in" info and intake time is Tuesday at 11:30 AM. Clients get a comprehensive intake assessment to match them to the most appropriate level of care.

For dual-diagnosis: CHA has the expertise to help people with both psychiatric and addicton disorders. This includes Medication-Assisted Treatment like Buprenorphine (Suboxone) and Naltrexone. To be eligible for ongoing medication management, you must be enrolled in primary care at CHA and be engaged in group or individual treatment in the Outpatient Addiction Service. 

Get Connected

CHA Outpatient Addictions Program: 617-591-6051

Opioid Use Nurse Connection Line: 617-591-6000


CHA Central Street Care Center, Somerville

Program Services

Intensive Outpatient Program (IOP)

  • This group-based program is for people who are newly sober or in early recovery. The goal is to help prevent relapse.


    This 4-week program meets Monday, Wednesday, and Friday: 9 am - 12 pm.

Recovery Groups

CHA offers weekly, biweekly and monthly groups (days and evenings) to help people in various stages of recovery.

  • Groups without sobriety. These groups are for people in the early stages of thinking about their addiction with no sobriety commitment.
  • Groups that require sobriety. These groups cover topics like relapse prevention, recovery support, emotion management, health and wellness and living with co-occurring psychiatric disorders.
  • Specialty groups. We occasionally offer groups that focus on topics like DBT, Mindful Recovery and Anxiety Management.

Individual Therapy

  • The Outpatient Addictions Service (OAS) does offer therapy for some patients, but out capacity is very limited. Most of the care provided is group psychotherapy.

Research Opportunities

Addiction research studies can help some people on their path to sobriety.

Please see below for a list of current research opportunities at CHA.


MySafeRx can help keep you opioid free. It uses a mobile device application for remote medication monitoring of Buprenorphine (BUP) for individuals with opioid use disorder. It includes the following:

  • mobile-based, confidential text messaging; 
  • a secure electronic pill organizer system; 
  • video conference-based coaching with daily yet brief motivational, empathic and compassionate interviewing techniques, and,
  • supervised self-administration of medication and notification of clinicians when medication is missed.

For more information, click here, or email mysaferx@challiance.org, or call 617-591-8730.

Mindfulness and Opioid Use Study

Mindfulness and Opioid Use is a 6 month research study on the effect of mindfulness on opioid use and anxiety during primary care Buprenorphine treatment. The study aims to:

  • Reduce cravings and increase self-control
  • Learn mindfulness tools to enhance your well-being
  • Receive support of a group to prevent relapse

You must be 18 or older, currently prescribed Buprenorphine and able to attend weekly group and complete weekly surveys.

For more information contact your CHA provider, email mindfulobot@challiance.org or call 617-591-6055.

    Contact Us

  • Opioid Use Disorder Help Line

    P: (617) 591-6000
  • Outpatient Addictions

    26 Central Street Somerville, MA 02143
    P: (617) 591-6051 F: (617) 591-6054

    Admin Hours
    M - F: 9 am - 5 pm