One Agency. One Vision. Many Goals. 


Mission Statement:

The Mental Health Association of Nassau County (MHANC) is a 501(c)(3) not-for-profit membership organization dedicated to improving mental health in our community through advocacy, education, program development and the delivery of direct services.


Our Philosophy

MHANC believes mental health is as important as physical health, and that recovery is possible. Our services assist individuals facing chronic and serious mental illness and psychiatric disabilities, supporting them on their paths to building productive and meaningful lives.



Since its founding in 1953, MHANC has been an advocate for the needs of adults and children with psychiatric and emotional difficulties.  Throughout the 1970’s, MHANC provided information for individuals seeking treatment or services while continuing its advocacy efforts.  In the 1980’s, the agency grew rapidly to fill the growing need for innovative community services.

During the course of the last 68 years, MHANC various accomplishments include opening:

  • Walden Corners: the first community residence for people with psychiatric disabilities on Long Island in 1983
  • The Terrace: the first children’s residence for children with autism in 1989
  • College Bound:-the first supported education program for college students in 1988
  • Clinton Court: the first permanent-home apartment complex for adults with psychiatric disabilities in 1998
  • Turquoise House: the first Peer-Run Respite on all of Long Island in 2015

These programs represent more than simply achievements; they signify innovations in raising the standards of excellence for programs and services for those with mental illnesses and developmental disabilities.


Our Impact

MHANC offers comprehensive services and advocacy that focuses on mental health, as well as overall health and wellness. The following are highlights from some of our programs in 2020:

    • PROS total direct care hours – 13,368 hours of direct care
    • Housing – 44,165 days of housing with support services
    • Education & Training – Provided workshops for more than 1,900 community members and professionals
    • Adults Receiving Financial Management – Supported 545 individuals
    • Veterans Services – Reached over 4,500 veterans on Long Island (the second largest population of veterans in the country)



The MHANC seeks to collaborate with other providers to continuously benefit the community.  We work with clinics in Nassau County, provide consultations to many school districts and coordinate advocacy on behalf of the mental health system. Our advocacy efforts include fighting discrimination laws and stigmatizing media messages, promoting the need for adequate funding for services and housing, and encouraging consumers to speak for themselves on personal and policy issues.

For more information, please call us at 516.489.2322 or message us!


Nearly 1 in 5 adults, more than 18%, in the U.S. experience mental illness in a given year.

5-6% of American adults have a serious mental illness; about 2% have disorders that are long-term and disabling, contributing to very high rates of unemployment and poor living conditions.

More than 450 million people around the world live with mental illnesses.

20-25% of Americans have a diagnosable mental and/or substance use disorder in any given year: 6.8 million people with an addiction have a mental illness.

There were approximately 20.6 million people in the United States over the age of 12 with an addiction in 2011, excluding tobacco.

Over 3 million people in 2011 received treatment for their addiction.

The Long Island Coalition estimated that there are approximately 3,000 homeless people in Nassau County and 64 of them are living on the streets.

30-40% of homeless adults and 15-20% of people in jails and prisons in the United States have a serious mental illness. This is often accompanied by substance abuse problems in both these populations.

As many as 10% of children have a serious emotional disturbance, contributing to school failure and other serious problems.

Just over 20 percent of children, either currently or at some point during their life, have had a seriously debilitating mental disorder.

It is estimated that 1 in 68 children in the US have autism.

As the number of older adults doubles over the next two decades so will the number of older adults with mental disordersThis includes 5.5 million older adults who currently have Alzheimer’s disorder or other dementia. Without advances in prevention, this will rise to 11 million older adults with dementia by 2050.

11 to 20% of veterans of the Iraq and Afghanistan wars (Operation Iraqi Freedom and Operation Enduring Freedom) have been diagnosed with PTSD.

30% of soldiers develop mental problems within 3 to 4 months of being home.

Depression and post-traumatic stress disorder (aka PTSD, an anxiety disorder that follows experiencing a traumatic event) are the most common mental health problems faced by returning troops.