Help on Long Island can feel harder to find than it should. Nassau and Suffolk have dozens of hotlines, county offices and support groups. When you are struggling, or worried about someone you love, sorting through them takes energy you may not have.
This guide gathers the most useful Long Island mental health resources in one place. We organized them by situation, so you can find the right number quickly. You will find what to do in an emergency and who to call or text now.
We also cover teams that come to you, free support groups, and how to start ongoing care. Every number comes from an official county, state or national source. Even so, please confirm hours before you travel, since they can change.
Long Island Mental Health Resources In An Emergency
Some moments cannot wait for a phone call or an appointment. This section explains when to call 911 and where Long Island’s psychiatric emergency rooms are, so you can act quickly.
Call 911 if someone has been hurt, may hurt themselves or others right now, or cannot stay safe. You can also go to the nearest emergency room.
Both counties have a psychiatric emergency room on Long Island with dedicated mental health staff:
- Suffolk: The Comprehensive Psychiatric Emergency Program (CPEP) at Stony Brook University Hospital, 100 Nicolls Road, Stony Brook, runs a 24-hour psychiatric emergency room at (631) 444-6050.
- Nassau: The psychiatric emergency room at Nassau University Medical Center, 2201 Hempstead Turnpike, East Meadow, can be reached at (516) 572-4775, per the Nassau County Office of Mental Health.
Long Island Crisis Hotline Options: 24/7 Lines You Can Call Or Text
A crisis line connects you with a trained counselor who listens and helps you through the moment. You do not need a diagnosis, insurance or a referral to call.
On Long Island, as everywhere in the US, the number is simply 988. The 988 Suicide and Crisis Lifeline answers calls, texts and chats at any hour.
| Service | How To Reach It | Best For |
|---|---|---|
| 988 Suicide and Crisis Lifeline | Call or text 988, or chat at 988lifeline.org (24/7) | Anyone in emotional distress or suicidal crisis |
| Veterans Crisis Line | Dial 988, then press 1; text 838255 (24/7) | Veterans, service members and their families |
| Long Island Crisis Center | (516) 679-1111 (24/7) | Long Island residents who want local crisis support and referrals |
| Nassau County crisis line (227-TALK) | (516) 227-8255; phone counselors overnight | Nassau residents who want phone support or a visit |
| Suffolk County Crisis Hotline | (631) 751-7500 | Suffolk residents in crisis |
| Crisis Text Line | Text GOT5 to 741741 (24/7) | People who would rather text than talk |
| The Trevor Project | 1-866-488-7386 (24/7) | LGBTQ+ young people in crisis |
| NYS OASAS HOPEline | 1-877-846-7369, or text HOPENY (24/7) | Substance use or gambling problems, for you or a family member |
Takeaway: When you are unsure which number fits, call or text 988. If one line is busy or does not feel like the right fit, try another. It is completely okay to reach out more than once.
Mobile Crisis Teams and Walk-In Crisis Centers On Long Island
Sometimes a phone call is not enough, especially when a family member will not call for themselves. Both counties have teams that come to you, plus crisis centers you can walk into.
What is a mobile crisis team? A mobile crisis team is a group of trained mental health professionals who travel to you.
They meet you at home or another location, assess the situation and connect you with care. Nassau’s team, for example, includes licensed social workers and nurses.
Nassau County
- Mobile crisis: For Nassau County's mobile crisis team, call (516) 227-8255 (227-TALK). The team visits homes, schools and workplaces for adults and children. The county lists visiting hours of 10 am to 11 pm daily, with phone counselors overnight and next-day follow-up. The same number is the county's crisis line for phone support.
- Community Crisis Center, CN Guidance and Counseling Services: 950 South Oyster Bay Road, Hicksville, (516) 390-6544. This walk-in crisis center is open 24 hours a day, every day of the year.
- Adult Behavioral Health Crisis Center, Zucker Hillside Hospital: 75-59 263rd Street, Glen Oaks, just over the Queens line, (718) 470-8300. Walk-ins are welcome Monday to Thursday 9 am to 4 pm and Friday 9 am to 5 pm.
Suffolk County
- Family Service League Mobile Crisis: (631) 952-3333, with around-the-clock phone support and visits in the community.
- DASH (Diagnostic, Assessment and Stabilization Hub), Family Service League: 90 Adams Avenue, Hauppauge, (631) 952-3333. This voluntary crisis stabilization center is open 24 hours a day, every day.
- Suffolk County crisis hotline: (631) 751-7500, listed in the NYS Office of Mental Health Suffolk resource guide, revised April 2026.
- Stony Brook CPEP: the 24-hour psychiatric emergency room above, at (631) 444-6050.
The Nassau centers appear in the NYS Office of Mental Health Nassau guide, also revised April 2026.
A Common Scenario
A mother worries about her adult son, who is withdrawn and will not call anyone. She phones the mobile crisis line herself and describes what she is seeing. A counselor talks her through next steps. Speaking with a trained counselor helps her feel less alone.
Mental Health Support Groups On Long Island, Warmlines and Peer Support
Not every hard moment is a crisis, and that is okay. If you want to talk with someone who has been there, these services offer support without the urgency of a hotline.
A warmline is a peer-run phone line for when you need to talk but are not in immediate danger.
- NAMI HelpLine: 1-800-950-6264, or text NAMI to 62640, Monday to Friday, 10 am to 10 pm ET. It offers free information and resources. It is not a crisis line, so use 988 in a crisis.
- NAMI Long Island: Local support comes through NAMI Central Suffolk Long Island (NAMI CSLI), 516-330-9778, at namicsliny.org. It runs free peer and family support groups, in person and online. It also teaches Family-to-Family (nine sessions for family and friends) and Peer-to-Peer (eight sessions for adults living with a mental health condition). Group schedules change monthly, so check the website for current dates.
- Mental Health Association of Nassau County Peer Warm Line: (516) 489-0100. Call to talk with a peer when you are not in immediate danger; call for current hours.
- Hands Across Long Island (HALI) Peer Recovery Center: 159 Brightside Avenue, Central Islip, (631) 234-1925. It is open Monday to Friday, 8:30 am to 4 pm. Walk-ins are welcome, and self-help groups are available.
For alcohol, drug or family recovery support, Long Island has 12-step hotlines. Alcoholics Anonymous is at (631) 669-1124, Narcotics Anonymous at (631) 689-6262, and Al-Anon at (516) 433-8003 in Nassau or (631) 669-2827 in Suffolk.
Where To Get Mental Health Help On Long Island If It Isn’t An Emergency
If you need help but are not in crisis, a few steps can take you from “I don’t know where to begin” to a first appointment. Start with whichever step feels easiest right now.
1. Talk to your primary care doctor. Your doctor can screen for depression or anxiety and rule out physical causes. They can also start treatment and refer you to a therapist or psychiatrist.
2. Call the number on your insurance card. Most plans have a behavioral health line that lists in-network providers accepting new patients. Ask the representative to check availability for you.
3. Call the SAMHSA National Helpline at 1-800-662-4357. It is free, confidential and open 24/7 in English and Spanish. It provides referrals to local treatment for mental health and substance use.
4. Contact your county. In Nassau, the Office of Mental Health in Uniondale offers information and referral. Call (516) 227-7057 for a single point of entry to adult services. In Suffolk, the Farmingville clinic at 15 Horseblock Place lists Monday walk-in hours from 9 to 11:30 am. Call (631) 854-2552 to confirm hours before you go.
5. Ask about support while you wait. If there is a waitlist, a NAMI support group, peer warmline or family course can help in the meantime. Remember that 988 is there if things get worse.
If you wonder whether winter plays a role, read our guide to seasonal depression on Long Island.
When Standard Treatment Hasn’t Been Enough
Some people follow every step on this list and still feel stuck. This short section is for adults whose depression has not improved with treatment. It is not meant for anyone in crisis right now.
Some adults work with a therapist and try more than one medication, yet their depression does not lift. Clinicians call this treatment-resistant depression, and it is worth raising with your care team. If that sounds familiar, you can read about depression that isn’t responding to medication.
Ketamine Wellness New York offers physician-supervised IV ketamine for adults with treatment-resistant depression. Dr. Pervaiz Qureshi, MD, board-certified in internal medicine, leads clinical care. He has more than 30 years of clinical practice.
You can visit our Long Island clinic in Great Neck or our Queens clinic in Jackson Heights. Ketamine is used off-label for depression, and the FDA has not approved it for any psychiatric condition. It is not crisis or emergency care. If you are in crisis, use the resources above.
Frequently Asked Questions (FAQs)
What number do I call for a mental health crisis on Long Island?
Call or text 988 at any hour of the day or night. You can also call the Long Island Crisis Center at (516) 679-1111. In Suffolk, the county crisis hotline is (631) 751-7500. If someone is in immediate danger, call 911 or go to the nearest emergency room.
What is the difference between a crisis line and a warmline?
A crisis line, such as 988, is staffed around the clock for people in distress or suicidal crisis. A warmline is a peer-run line for when you want to talk but are not in immediate danger. Both are free, and you never need to feel “sick enough” to call.
What can I do if a family member is struggling but won’t call for help?
Mobile crisis teams can come to the person who is struggling. In Nassau, call (516) 227-8255, and in Suffolk, call Family Service League at (631) 952-3333. NAMI’s family groups and Family-to-Family course offer free support for you. If anyone is in immediate danger, call 911.
Can I get mental health help on Long Island without insurance?
Yes, you can get help without insurance. Crisis lines, walk-in crisis centers and NAMI support groups do not require insurance. The SAMHSA National Helpline, 1-800-662-4357, is free and can refer you to local treatment. Your county mental health office can explain public options.
You Don’t Have To Figure This Out Alone
It takes strength to ask for help, and these Long Island mental health resources are closer than they feel. Save 988 in your phone today, just in case.
If your depression has not responded to treatment, call (516) 203-1041 or book a consultation to ask about IV ketamine. Our clinics are in Great Neck (Long Island) and Jackson Heights (Queens). We do not have a Manhattan location.
Resources
- Nassau County Office of Mental Health: Crisis Hotline & Services
https://www.nassaucountyny.gov/1700/Crisis-Hotline-Services - 988 Suicide and Crisis Lifeline
https://988lifeline.org/ - Veterans Crisis Line
https://www.veteranscrisisline.net/ - NYS OMH Long Island Regional Resource Guide: Suffolk West (revised April 2026)
https://omh.ny.gov/omhweb/regional-resource-guides/lir-suffolk-west-resource-guide.pdf - NAMI HelpLine
https://www.nami.org/support-education/nami-helpline/ - NAMI New York Affiliate Directory
https://www.nami.org/find-your-local-nami/new-york-affiliate-directory - SAMHSA National Helpline
https://www.samhsa.gov/find-help/helplines/national-helpline - Nassau County Office of Mental Health
https://www.nassaucountyny.gov/1711/Mental-Health
