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Middlesex Human Service Agency, Inc.

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Building independence, one human at a time

Contact Details

Number: 781-894-6110


Address: 50 Prospect St., Suite 3, Waltham, MA 02453

About Middlesex Human Service Agency, Inc.

The Middlesex Human Service Agency, Inc. (MHSA) is a nonprofit group that operates rehab centers and transition homes in Massachusetts, with facilities mostly located in and around the Boston Metro. Its drug treatment and rehab centers in Boston primarily house long-term rehab programs. It also runs shelters for families and individuals and also runs feeding programs and a mobile market.

Starting out in 1977 as an alcohol detox and rehab center, MHSA has since grown and taken on a much more holistic approach to curbing substance misuse. Its programs are designed not only to help individuals recover and stay clean, but also to help set them up for success on their own terms.

The main mission of MHSA is to empower less-privileged people and give them the independence they need to be productive. Their motto, “building independence, one human at a time”, reinforces this. As part of this mission, it operates four facilities to address issues related to substance use disorder: Answer House, Sullivan House, Hurley House, and Middlesex DUIL.

What services does MHSA offer?

MHSA primarily offers long-term residential rehab, short-term intensive residential rehab, counseling, and transitional housing. They give evidence-based clinical support to people attending their transitional programs, but they generally do not offer treatment on an outpatient basis.

It also makes the education of residents at their programs a priority, with the end goal of producing independent, productive members of society. Many of the experienced residents in MHSA’s programs also participate in helping guide other residents, and many also participate in MHSA’s other programs.

Who does MHSA serve?
The MHSA’s different programs all serve different disadvantaged members of the community. However, their substance use disorder programs are primarily geared towards adult males. The group also accepts referrals from law enforcement agencies and the courts.

MHSA’s advocacy notably also extends to disadvantaged people of all backgrounds, particularly the homeless. As many homeless people also have substance use disorder and other mental health conditions, MHSA has made it their mission to help alleviate their distress and prepare them to stand on their own.

Residents of MHSA’s substance rehab facilities often first come in contact with MHSA through their feeding and shelter programs. As mentioned earlier, residents may also participate in the running of different programs as part of their time in rehab or transitional living.

Learn more about Middlesex Human Service Agency’s facilities, services, offers, and programs at

The facility name, logo, brand, and registered trademark(s) depicted above are the property and registered trademarks of Middlesex Human Service Agency, and are being used for identification and informational purposes only. Use of these names, logos, and brands shall not imply endorsement. This site is not affiliated with or sponsored by Middlesex Human Service Agency.

Treatment approach

  • Cognitive/behavioral therapy
  • Dialectical behavioral therapy
  • Rational emotive behavioral therapy
  • Substance abuse counseling approach
  • Trauma-related counseling

Treatment options

  • Intensive short-term
  • Long-term residential
  • Residential
  • Transitional housing


  • Smoking permitted in designated areas
  • Transitional housing or halfway house
  • LGBT friendly

Primarily serves

  • Adult men
  • Seniors or older adults


  • Substance use disorders
Areas of specialization

  • 12-step facilitation approach
  • Accepts clients on opioid medication
  • Anger management
  • Brief intervention approach
  • Clients referred from the court/judicial system
  • Contingency management/motivational incentive
  • Family counseling
  • Group counseling
  • Individual counseling
  • Motivational interviewing
  • Persons with co-occurring mental and substance use disorders
  • Relapse prevention

Payment options

  • Cash or self-payment
  • Check
  • Federal or any government funding for substance abuse programs
  • Payment assistance (check with the facility for details)
  • Major credit cards

Accepted insurances

  • Most insurance plans

How It Works

For those seeking addiction treatment for themselves or a loved one, our calls are confidential and are available for 24/7 help.

Calls from your area will be answered by Legacy Healing Center, and network of treatment centers who can be found here

We are available 24/7 to discuss your treatment options. Our representatives work for a treatment center and will discuss whether their facility may be an option for you.

These calls are offered at no cost to you and with no obligation to enter into treatment. Neither this site nor anyone who answers the call receives a commission or fee dependent upon which treatment provider a visitor may ultimately choose.

If you wish to explore additional treatment options or connect with a specific rehab center, you can: browse top-rated listings, visit our homepage, or visit SAMHSA, at, or by calling 800-662-HELP. You may also contact The Florida Department of Children and Family Services at