Don't allow addiction to control your life any longer

Get the Help You Need


Your first step to recovery is talking to one of our professionals.

A Message from the CEO

Mary Banaszak

“Our mission is to provide the highest quality drug and alcohol dependency and co-occurring treatment to the clients we service. Our approach is based on recognizing the uniqueness of each individual client, meeting them where they are in their addiction and tailoring their treatment specifically to their needs.

Throughout your drug and alcohol treatment experience, we will help you explore every opportunity to guide you on a path to long term recovery.

At Greenbriar Treatment Center, we are what we continually do. Excellence, therefore, is not an attitude. Excellence is a habit!”



Our Areas of Expertise

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Greenbriar has a brand new, sate-of-the-art detox facility to treat up to 14 patients in a beautiful, quiet, medically safe environment. The detox program is conveniently located on the grounds of our Inpatient facility. Detoxification can last from 3-7 days depending on the medical needs of our patients. Heroin, Alcohol, and Prescription Pills are a few of the drugs that may require detox prior to being transferred to an Inpatient level of care.

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Inpatient Rehab


Greenbriar Treatment Center has been treating addiction since 1985. Located in Washington County, our Inpatient facility is licensed for Substance Abuse and Co-Occurring Treatment. Our Inpatient program can provide quality care for up to 62 patients at any given time.

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Day Partial and Intensive Outpatient


Greenbriar has seven Outpatient sites throughout Southwestern Pennsylvania. Each Outpatientt facility offers Day Partial and Intensive Outpatient levels of care. Several sites offer Evening treatment to accommodate the needs of our patients.

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Halfway House


The Lighthouse for Men and the Lighthouse for Women are gender specific halfway houses located in Washington County. Both are licensed for Co-Occurring treatment. Each facility can treat up to 25 patients in a safe and home-like environment.

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Long Term Residential Program


The Long Term Residential Program focuses on promoting self-care with the goal to permanently improve daily living and re-integration into society.

Choosing Us

Greenbriar Treatment Center understands the unique needs of people suffering from addiction.  We have many levels of care ranging from Detox to Outpatient.  After a thorough assessment with a skilled evaluator, we will have an understanding of which level of care will be most helpful in your journey of recovery.  Whether your drug of choice is Alcohol, Cocaine, Heroin, Prescription Pills, or Marijuana, we can help you begin a new phase of life.

We would love to hear from you
  • Greenbriar - Monroeville

    400 Penn Center Blvd, Suite 707
    Pittsburgh, PA 15235
    P: (412) 829-2103
    F: (724) 531-6920

  • Greenbriar - New Kensington

    701 Fourth Avenue,
    Second Floor
    New Kensington, PA 15068
    P: (724) 339-7180
    F: (724) 531-6025


  • Greenbriar - North Strabane

    1840 Washington Road (Route 19)
    Washington, PA 15301
    P: (724) 916-0192
    F: (724) 531-6019

  • Greenbriar - Robinson

    4955 Steubenville Pike,
    Suite 365
    Pittsburgh, PA 15205
    P: (412) 788-6292
    F: (412) 788-5846

  • Greenbriar - South Hills

    101 Towne Square Way,
    Suite 221
    Pittsburgh, PA 15227
    P: (412) 885-7180
    F: 412) 885-8351

  • Greenbriar - Squirrel Hill

    1928 1/2 Murray Avenue
    Pittsburgh, PA 15217
    P: (412) 421-4311
    F: (412) 421-4332

  • Greenbriar - Wexford

    6200 Brooktree Road,
    Suite 210
    Wexford, PA 15090
    P: (724) 934-8435
    F: (724) 531-6021

  • Greenbriar - Waynesburg

    350 Bonar Ave,
    Waynesburg, PA 15370
    *Located inside Washington Health System Greene Hospital