Mather Hospital at Northwell - Psychiatric Hospital in Port Jefferson, NY

Mather Hospital at Northwell is a samhsa-listed psychiatric hospital in Port Jefferson, NY (11777). SAMHSA publishes no ratings, inspections, or quality scores for these listings; confirm services, licensing, cost, and availability directly with the provider.

Location: view on OpenStreetMap

Contact details

Telephone: 631-331-8200

Street address: 100 Highlands Boulevard, Suite 101, Port Jefferson, NY 11777

County: Suffolk County

How to verify Mather Hospital at Northwell

These listings are drawn from SAMHSA's FindTreatment.gov national directory (the N-SUMHSS), a public-domain U.S. government dataset (17 U.S.C. 105). SAMHSA has not reviewed or endorsed this site. Before you rely on this listing, confirm licensing, services, eligibility, and cost directly with the provider. These listings are unrated: no ratings, inspections, or quality scores are published, so there is no score to check.

Look up Mather Hospital at Northwell on SAMHSA FindTreatment.gov →

Ownership & operation

Legal name: Outpatient Chemical Dependency Clinic. Ownership type: non-profit. Facility type: General Hospital (including VA hospital). Confirm current ownership and operation with the provider.

Levels of care & settings

Medications & pharmacotherapies

Treatment approaches

Assessment & testing

Education & counseling

Ancillary & recovery services

Special programs & populations

Payment, insurance & assistance

Age groups served

Languages

Facility type & operation

Licensing & accreditation

About psychiatric hospitals in Port Jefferson

Psychiatric hospitals provide acute inpatient mental health and substance use treatment with 24-hour clinical supervision. They serve people who need a secure, medically monitored setting, including those at risk of harm to themselves or others. These listings are unrated: no star ratings, inspections, or quality scores are published, so confirm services, licensing, cost, and availability directly.

Ask about admission criteria, staffing and psychiatrist coverage, safety and visitation policies, how discharge and follow-up care are arranged, and what insurance or payment is accepted. These listings are unrated - verify services, licensing, cost, and availability directly. For local alternatives, browse the Psychiatric Hospitals directory for Port Jefferson, the Suffolk County psychiatric hospitals list, or all care types in Port Jefferson.

For context, this directory lists 5 across Suffolk County; 1 in ZIP 11777.

ZIP code: all care providers in ZIP 11777 · Psychiatric Hospitals in ZIP 11777

Nearest psychiatric hospitals by distance

Psychiatric Hospital · government Northport VAMC Northport, NY 11768 SAMHSA-listedAbnormal involuntary movement scaleAcamprosate (Campral®)14 mi Psychiatric Hospital · government Southwest Connecticut MH Systems Bridgeport, CT 06604 SAMHSA-listed12-step facilitationAbnormal involuntary movement scale18 mi Psychiatric Hospital · non-profit Bridgeport Hospital Bridgeport, CT 06610 SAMHSA-listedAbnormal involuntary movement scaleActivity therapy18 mi Psychiatric Hospital · government Southwest Connecticut MH Systems Bridgeport, CT 06610 SAMHSA-listed12-step facilitationAbnormal involuntary movement scale18 mi Psychiatric Hospital · non-profit Huntington Hospital Huntington, NY 11743 SAMHSA-listedAbnormal involuntary movement scaleActivity therapy19 mi Psychiatric Hospital · for-profit Center for Discovery Southport, CT 06890 SAMHSA-listedActive duty militaryAdults19 mi Psychiatric Hospital · non-profit University Hospital/Stony Brook ELIH Riverhead, NY 11901 SAMHSA-listedAcamprosate (Campral®)Accepts clients using MAT but prescribed elsewhere21 mi Psychiatric Hospital · government Substance Use and Addiction Treatment New Haven, CT 06511 SAMHSA-listed12-step facilitationAcamprosate (Campral®)25 mi

Straight-line distances estimated from ZIP-centroid coordinates, not driving distance. Confirm a facility's location directly.

Key facts

Care typePsychiatric Hospital
Ownershipnon-profit
Facility typeGeneral Hospital (including VA hospital)
Medications for opioid use disorderYes
Treats co-occurring disordersYes
Detox/withdrawal managementNo
Source record IDd4fc0ea34a68c6dd

Frequently asked questions

Is Mather Hospital at Northwell licensed or accredited?
The SAMHSA record for Mather Hospital at Northwell lists: State department of health, State substance use treatment agency, The Joint Commission. Licensing and accreditation can change; confirm the current status with the provider or the relevant state agency.
Does Mather Hospital at Northwell offer medications for opioid use disorder?
Yes. The SAMHSA record for Mather Hospital at Northwell indicates that it offers medications for opioid use disorder (MOUD). Confirm which medications, the dosing schedule, and same-day or walk-in intake directly with the provider.
Does Mather Hospital at Northwell accept insurance?
The SAMHSA record lists these payment options for Mather Hospital at Northwell: Cash or self-payment, Federal military insurance (e.g., TRICARE), Medicaid, Medicare, Payment assistance (check with facility for details), Private health insurance, Sliding fee scale (fee is based on income and other factors), State-financed health insurance plan other than Medicaid. Coverage varies by plan; confirm accepted insurance and out-of-pocket cost directly with the provider.
Where is Mather Hospital at Northwell located?
100 Highlands Boulevard, Suite 101, Port Jefferson, NY 11777. The facility is in Suffolk County. Contact phone: 631-331-8200.
Where does this information come from?
This listing is drawn from SAMHSA FindTreatment.gov (N-SUMHSS) (processing date 2026-10-08). It is not a CMS quality record, and SAMHSA publishes no ratings or inspections for these listings. SAMHSA has not reviewed or endorsed this site. Confirm current details directly with the provider before making care decisions.
How many psychiatric hospitals are near Port Jefferson?
This directory lists 1 psychiatric hospitals in Port Jefferson and 5 in Suffolk County, including 1 in ZIP 11777. The nearest listings, with estimated distances, are shown above.

Data provenance

Source: SAMHSA FindTreatment.gov (N-SUMHSS) (record d4fc0ea34a68c6dd). Processing date: 2026-10-08. See the methodology page for normalization details. This profile is informational only and is not medical advice.

Required disclosures

For general information only, not medical advice. This website shares public data and general information. It does not offer medical advice, diagnosis, or treatment guidance, and it cannot replace a consultation with a qualified health care professional.

Independent and unaffiliated. RehabProviders.org is a private, independently run directory. It is not affiliated with, nor endorsed or operated by, the Substance Abuse and Mental Health Services Administration (SAMHSA), the U.S. Department of Health and Human Services, or any government agency. SAMHSA has not reviewed or endorsed this site.

Confirm details before acting. Facility records come from public federal datasets and may lag or contain errors. These listings are unrated; always verify current services, licensing, availability, and cost directly with the provider.

In a crisis, get help now. Call or text 988 to reach the 988 Suicide & Crisis Lifeline, or call the SAMHSA National Helpline at 1-800-662-4357.

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