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Long Island Drug Treatment Centers
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Long Island, New York from above

Treatment centers Long Island

This site lists 83 treatment centers across Long Island, drawn from the 2026 SAMHSA directory. Location, levels of care, and payment options appear for each of the 80 centers. At no cost and with no commitment, the helpline connects you with licensed providers.

listed facilities
62
localities
37
Call anytime · 24/7 · (516) 636-2679

  • Long Beach, NY

    Triumph Treatment

    4.7/53 Google reviews

    • Outpatient
    • Co-Occurring Mental Health

    Triumph Treatment Long Beach is a private outpatient program located on Long Island.

    • 30 days program
    View center

  • Hauppauge, NY

    Suffolk County Dept of Health Service

    3.7/515 Google reviews

    • Outpatient
    • Co-Occurring Mental Health

    This Hauppauge clinic provides care in an outpatient setting for mental health and substance use conditions occurring together.

    • Joint Commission
    • 30 days program
    View center

  • Huntington, NY

    WellLife Network Outpatient Clinic 2

    4.3/534 Google reviews

    • Outpatient
    • Co-Occurring Mental Health

    WellLife Network Outpatient Clinic 2 is a nonprofit clinic in Huntington, New York.

    • 30 days program
    View center

  • Wyandanch, NY

    WellLife Network Outpatient Clinic

    3.8/514 Google reviews

    • Outpatient
    • Co-Occurring Mental Health

    On Long Island, WellLife Network outpatient clinic Wyandanch delivers structured outpatient services.

    • 30 days program
    View center

  • Hempstead, NY

    Mental Health Assoc of Nassau Cnty

    • Outpatient

    This page is about mental health assoc of nassau cnty pros Hempstead, an outpatient program located on Main Street.

    • 5 days program
    View center

  • Rockville Centre, NY

    Mercy Medical Center Inpatient

    1.5/512 Google reviews

    • Residential Rehab
    • Outpatient

    This Rockville Centre unit is an inpatient psychiatric service within Mercy Medical Center.

    • 5 days program
    View center

  • Port Jefferson, NY

    Northwell Health Mather Hospital

    3.4/5394 Google reviews

    • Outpatient
    • Co-Occurring Mental Health

    On Long Island, Northwell Health Mather Hospital Port Jefferson operates a daytime program for severe psychiatric symptoms.

    • Joint Commission
    • 7 days program
    View center
  • Victory Recovery Partners- Massapequa Park, Massapequa Park

    Massapequa Park, NY

    Victory Recovery Partners- Massapequa

    4.8/5105 Google reviews

    • Detox
    • Outpatient
    • Co-Occurring Mental Health

    Victory Recovery Partners- Massapequa Park delivers detox and care for substance use and co-occurring without overnight stays conditions.

    • 30 days program
    View center

  • Garden City, NY

    SCO Family of Services Other Licensed

    4.1/518 Google reviews

    • Outpatient
    • Co-Occurring Mental Health

    SCO Family of Services Other Licensed Garden City treats substance use and co-occurring mental health as one combined outpatient program.

    • 30 days program
    View center
  • Charles K Post Addiction Treatment Center, Brentwood

    Brentwood, NY

    Charles K Post Addiction Treatment

    • Residential Rehab
    • Co-Occurring Mental Health

    In Brentwood, Charles K Post Addiction Treatment Center is a state-run residential program.

    • 30 days program
    View center
  • Mountainside Huntington, Huntington

    Huntington, NY

    Mountainside Huntington

    4.8/521 Google reviews

    • Detox
    • Outpatient
    • Co-Occurring Mental Health

    Mountainside Huntington provides outpatient care for addiction in Huntington, New York.

    • Joint Commission
    • 35+ days program
    View center

  • Brentwood, NY

    Outreach Developmentoration

    1.8/55 Google reviews

    • Outpatient
    • Co-Occurring Mental Health

    Outreach Developmentoration offers outpatient treatment in Brentwood.

    • 30 days program
    View center
  • Monte Nido Glen Cove, Glen Cove

    Glen Cove, NY

    Monte Nido Glen Cove

    3.4/522 Google reviews

    • Residential Rehab

    Monte Nido Glen Cove is a residential program in Glen Cove, New York.

    • Joint Commission
    • 7+ days program
    View center

  • Huntington Station, NY

    Suffolk Cnty Dept of Hlth Servs Div

    • Outpatient
    • Co-Occurring Mental Health

    Suffolk Cnty Dept of Hlth Servs Div Comm Huntington Station is an outpatient program in Huntington Station, NY.

    • Joint Commission
    • 30 days program
    View center
  • Wellbridge Calverton, Calverton

    Calverton, NY

    Wellbridge Calverton

    4.8/5245 Google reviews

    • Detox
    • Residential Rehab
    • Co-Occurring Mental Health

    Wellbridge Calverton is a detox and residential rehab in Calverton, NY.

    • Joint Commission
    • 30+ Days program
    View center

  • Freeport, NY

    Mercy Hall Residential Reintegration

    2.3/57 Google reviews

    • Residential Rehab
    • Co-Occurring Mental Health

    Mercy Hall Residential Reintegration Freeport offers residential rehab to adults coping with substance use and mental health conditions that occur alongside addiction.

    • 30 days program
    View center

  • Port Jefferson, NY

    Saint Charles Hospital Port Jefferson

    3.2/530 Google reviews

    • Detox
    • Residential Rehab
    • Co-Occurring Mental Health

    At Saint Charles Hospital Port Jefferson, medically managed detox and residential rehab are provided for substance use and for mental health conditions that occur alongside addiction.

    • Joint Commission
    • 30 days program
    View center

  • Glen Oaks, NY

    Zucker Hillside Hospital Northwell

    • Outpatient
    • Co-Occurring Mental Health

    Addiction outpatient care is available through the Zucker Hillside Hospital Northwell Glen Oaks program.

    • Joint Commission
    • 30 days program
    View center

  • Medford, NY

    Pilgrim Psychiatric Center Yaphank

    4.2/59 Google reviews

    • Outpatient

    Pilgrim Psychiatric Center Yaphank Medford is an outpatient program in Medford, New York.

    • 5 days program
    View center

  • West Hempstead, NY

    Northwell Health Project

    4.0/57 Google reviews

    • Outpatient
    • Co-Occurring Mental Health

    Northwell Health Project West Hempstead is an outpatient program located in West Hempstead, New York.

    • Joint Commission
    • 30 days program
    View center

  • Patchogue, NY

    Seafield Services Outpatient Clinic

    3.0/522 Google reviews

    • Outpatient
    • Co-Occurring Mental Health

    Seafield Services Outpatient Clinic Patchogue is an outpatient choice on Long Island.

    • Joint Commission
    • 30 days program
    View center

  • Ronkonkoma, NY

    Community Counseling Services of

    3.3/519 Google reviews

    • Outpatient

    Community Counseling Services of Ronkonkoma/drug and alcohol op clinic Ronkonkoma operates as an outpatient clinic.

    • 30 days program
    View center

  • Holtsville, NY

    YMCA Family Services

    2.3/53 Google reviews

    • Outpatient

    YMCA Family Services Holtsville is an outpatient program on Long Island.

    • 30 days program
    View center

  • Smithtown, NY

    Town of Smithtown Horizons Counseling

    • Outpatient
    • Co-Occurring Mental Health

    Town of Smithtown Horizons Counseling & Smithtown is an outpatient rehab center.

    • 30 days program
    View center

A quiet moment of recovery

This directory covers 83 facilities listed on SAMHSA FindTreatment.gov, spread across 80 centers in Long Island communities. Listings include cities such as Brentwood, Hempstead, Smithtown, and Riverhead, among others. Each entry provides the center's address, phone number, treatment types (inpatient, outpatient, detox, dual diagnosis), and accepted payment methods like Medicaid or private insurance. The data is current as of November 1, 2026.

This site does not offer treatment or diagnosis to anyone. Through trained advisors, the helpline connects callers to licensed treatment providers; calls are free and private, committing you to nothing. Use the directory to compare centers, then call to check availability and coverage.

A journal and pen

How to compare treatment centers

  • Level of care

    Decide whether you need medically supervised detox, residential inpatient, or outpatient services. Each level offers different intensity and structure. The listings show which levels each center provides.

  • Location and access

    Consider distance from home, transportation, and whether family can visit. Long Island stretches 35 miles, so a center in Riverhead may be far from Hempstead. Check the address and travel time.

  • Payment and insurance

    Check whether the center accepts your insurance or Medicaid. Some centers offer sliding-scale fees. The helpline can help you explore coverage options with no obligation.

  • Special services

    If you have a co-occurring mental health issue, look for dual diagnosis care. Programs for specific groups, such as adolescents or older adults, are worth considering too. The listings show which centers provide these services.

Group room in a treatment program

Good to know

How many treatment centers are on Long Island?

There are 83 facilities listed on SAMHSA FindTreatment.gov across 80 centers in Long Island as of November 2026. These include inpatient, outpatient, and detox programs. The directory on this site summarizes each listing so you can compare options.

What is the Intensive Outpatient Program (IOP) on Long Island?

An IOP is a structured outpatient program that typically meets several times a week for a few hours per day. It allows you to live at home while receiving treatment. Many centers on Long Island offer IOPs; check individual listings for details.

Does Long Island have a drug problem?

Long Island, like many regions, has felt the effects of substance use, especially opioids. This site does not track overdose statistics, but the need for treatment shows in the 83 facilities listed. If you or someone you know needs help, call the helpline to explore options.

How much does 28 days in rehab cost?

The cost varies widely depending on the center, level of care, and payment method. Many centers accept insurance or Medicaid, which can reduce out-of-pocket expenses. The listings do not include prices, so call the helpline to discuss coverage and financial options.

What should I look for in a dual diagnosis treatment center on Long Island?

Seek out centers that clearly list dual diagnosis or co-occurring mental health services. The directory indicates which of the 83 facilities provide this, letting you compare programs. Then call the helpline to check availability and whether your insurance covers the center.

Ready to find a treatment center

If you are weighing treatment, the helpline can help you compare the 83 listed facilities and check availability. Calls are free, private, and commit you to nothing. Talk with a trained advisor who can connect you with licensed providers.

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