Psychiatric Hospitals in Nassau County, New York

This directory lists 5 samhsa-listed psychiatric hospitals in Nassau County. No ratings, inspections, or quality scores are published for these listings; confirm services and coverage directly with the provider. Provider profiles follow.

Browse: Psychiatric Hospitals in New York · all care types in Nassau County · Cities: Rockville Centre, Freeport, West Hempstead, Garden City

Psychiatric Hospitals profiles in Nassau County

Psychiatric Hospital · non-profit Mercy Medical Center Rockville Centre, NY 11570 SAMHSA-listedAbnormal involuntary movement scaleActivity therapy Psychiatric Hospital · non-profit New Hope Freeport, NY 11520 SAMHSA-listed12-step facilitationAccepts clients using MAT but prescribed elsewhere Psychiatric Hospital · non-profit Northwell Health West Hempstead, NY 11552 SAMHSA-listedAcamprosate (Campral®)Adults Psychiatric Hospital · non-profit Northwell Health System Garden City, NY 11530 SAMHSA-listedAcamprosate (Campral®)Accepts clients using MAT but prescribed elsewhere Psychiatric Hospital · non-profit Recovery House Garden City, NY 11530 SAMHSA-listed12-step facilitationAcamprosate (Campral®)

Cities in Nassau County

Rockville Centre, NY 1 facilities Freeport, NY 1 facilities West Hempstead, NY 1 facilities Garden City, NY 2 facilities

Choosing a psychiatric hospital in Nassau County

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.

Compare providers on the care they deliver, not on a ranking. Look at the levels of care offered, whether medications for opioid use disorder are available, the populations served, payment and insurance options, and the current licensing status of each program.

When you are choosing for yourself or someone you care for in Nassau County, call ahead to confirm current availability, intake requirements, accepted insurance or payment, and whether the program is licensed or certified. Ask what happens if someone needs a higher or lower level of care.

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.

Frequently asked questions

How many psychiatric hospitals does Nassau County have?
This directory lists 5 samhsa-listed psychiatric hospitals in Nassau County, New York, sourced from SAMHSA FindTreatment.gov (N-SUMHSS).
Which Nassau County cities have psychiatric hospitals?
Rockville Centre, Freeport, West Hempstead, Garden City list samhsa-listed psychiatric hospitals in this directory.

Data sources

Sources: SAMHSA FindTreatment.gov (N-SUMHSS). Processing date: 2026-10-08.

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.

Certain outbound links on this site are partner or affiliate links. If you use them we may receive a commission, and your price does not change. This never influences the data we publish.