Mather Hospital Northwell Health Mental Port Jefferson
Mather Hospital Northwell Health Mental Health Clinic provides outpatient care in Port Jefferson. It is one of 83 SAMHSA-listed facilities on Long Island. The clinic serves adults and young adults with mental health and substance use conditions.
- Outpatient
- 5 days
Here at this outpatient site, adults and young adults receive substance use and mental health care together under one roof. Staff build support around each person's diagnosis and needs, help people find recovery strategies that work, and encourage meaningful connections in a healing setting. Unsure whether this level of care fits, calling the helpline can help you sort it out. This clinic offers combined outpatient care for adults and young adults in Port Jefferson, Long Island. Care is personalized, not one-size-fits-all.
This clinic is in Port Jefferson and offers organized outpatient services instead of residential treatment. Someone who needs daily structure but lives at home may find it a helpful choice. If more support becomes necessary, the helpline can direct you to other levels of care. This clinic in Port Jefferson is among 83 SAMHSA-listed facilities on Long Island. It belongs to a larger health system, so care may be coordinated with other providers.
The environment is clinical, and services are provided in English. If you need inpatient or detox services, this clinic may not be a good fit, and the helpline can help you locate other choices. Outpatient care at this Port Jefferson clinic covers a variety of therapies for substance use and mental health.
Programs at this Port Jefferson clinic
Outpatient care is the only level offered at this clinic, with therapies including individual counseling, dialectical behavior therapy family therapy cognitive behavioral therapy group counseling, medication-assisted treatment and online therapy. Approaches can be combined to suit the person's needs. Should you need inpatient or detox services, this clinic may not fit, and the helpline can help you find other choices. This Port Jefferson clinic on Long Island lists medication-assisted treatment and online therapy among its approaches.
Care here centers on co-occurring disorders, drug addiction and smoking cessation, plus trauma and post-traumatic stress disorder. A typical program lasts 5 days. Since only outpatient care is available, the clinic may suit people who do not require 24-hour monitoring. If you are unsure outpatient care is enough, ask the clinic directly when you call. This clinic treats co-occurring disorders and trauma, and a typical program lasts 5 days.
- Dialectical Behavior Therapy
- 1-on-1 Counseling
- Group Therapy
- Online Therapy
- Cognitive Behavioral Therapy
- Family Therapy
- Medication-Assisted Treatment
Who this clinic is built for
- Young people and children requiring outpatient support for mental health or substance use
- Young adults and adults, including older adults
- People who identify as LGBTQ+
- Men and women seeking structured outpatient care
- Veterans
- People facing mental health plus substance use conditions at the same time
Program length and location
Located in Port Jefferson, NY, this outpatient facility runs a typical program of 5 days. Services are offered in English. The setting is clinical rather than residential, so people return home between visits. When residential or inpatient care is what you need, our helpline can help you compare other options on Long Island that are SAMHSA-listed. This Port Jefferson clinic offers outpatient services in English, with a typical program of 5 days.
Paying at this clinic in Port Jefferson
One payment option named at this clinic is paying cash at listed rates. Insurance coverage is not confirmed on this page. If you plan to use insurance, verify coverage with the clinic by phone before you go. The helpline can assist you in preparing questions about cost and coverage. For this Port Jefferson clinic on Long Island, asking about cash pay rates and insurance options is a sensible first call.
What to ask before starting care
- What does the 5-day program schedule look like, and how many hours a day does it involve?
- Can you confirm whether my insurance plan is accepted, and what my out-of-pocket cost would be?
- How can I tell if outpatient care is the appropriate level for my situation?
- What if it turns out I need a higher level of care, like inpatient or detox?
- Are medication-assisted treatment and online therapy available to everyone, or only certain people?

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Good to know
Is Mather Hospital Northwell Health Mental Port Jefferson an inpatient or outpatient program?
This program is outpatient. The clinic offers structured outpatient care rather than 24-hour residential treatment. A typical program lasts 5 days. If inpatient rehab on Long Island is what you need, this clinic may not fit, and the helpline can help you find other SAMHSA-listed choices.
What therapies are offered at this Port Jefferson clinic?
On its listing, the clinic includes individual counseling, CBT, DBT, family sessions, group work, medication-assisted treatment, and therapy delivered online. Depending on your diagnosis and what you need, these methods might be used together. Co-occurring disorders, substance use, help with quitting smoking, and trauma-related conditions are all treated at the clinic.
Does this clinic accept insurance or Medicaid?
The clinic names self-payment at listed rates as one option. The listing does not confirm whether it accepts insurance or Medicaid. If you plan to bill insurance, contact the clinic directly to confirm coverage and costs before you book. The helpline can assist you in framing those questions.
Who does this clinic serve?
This clinic serves children, adolescents, young adults, adults and older adults. The listing also names services for LGBTQ+ individuals, men, women and veterans. Co-occurring substance use conditions and mental health conditions are treated, along with trauma and PTSD. Services are provided in English.
How long is the program at Mather Hospital Northwell Health Mental Port Jefferson?
Most people attend for about 5 days. Because it is outpatient, you go home in between visits. Should you want a longer stay or a more intensive level, the helpline can walk you through other SAMHSA-listed choices across Long Island.
Talk about your next move
The helpline is free to call, available 24/7, and keeps your information private. It connects you to trained counselors who can help you check coverage and availability at this clinic or compare other SAMHSA-listed programs on Long Island. Calling does not commit you to treatment. Should you be uncertain which degree of support you need, then a short conversation can help you decide what to ask next. A quick call can confirm open beds and what your plan covers at this Port Jefferson clinic.