
Mather Hospital Northwell Health — Hospital-Affiliated Care in Port Jefferson, NY
Outpatient Partial Hospitalization Prg • 100 Highlands Boulevard, Suite 201 • Port Jefferson, NY 11777
SAMHSA 24/7 Helpline: 1-800-662-4357
Mailing Address
100 Highlands Boulevard, Suite 201
Port Jefferson, New York 11777
Phone Lines
Front desk: 631-473-3877
Hours of Operation
Hours not posted — call the facility to confirm availability
Mather Hospital Northwell Health
100 Highlands Boulevard, Suite 201, Port Jefferson, NY 11777

Inside Mather Hospital Northwell Health — Hospital-Based Care
Mather Hospital Northwell Health, located in Port Jefferson, NY, provides a wide array of treatment options designed for those facing substance use challenges as well as co-occurring mental health disorders, catering to both adults and children. The center offers various formats of care, including intensive outpatient programs, standard outpatient services, and treatments incorporating methadone, buprenorphine, or naltrexone. This facility has developed specialized programs tailored for different populations, including adolescents, adult men, and adult women, to meet their unique needs. With approaches such as 12-step facilitation, anger management, and brief intervention strategies, Mather Hospital ensures that every client receives personalized attention and care. Serving individuals of all ages, regardless of gender, Mather Hospital Northwell Health is committed to providing high-quality, evidence-based rehabilitation services. Their focus is on supporting every person on their individual journey toward recovery.
Insurance Plans Honored at Mather Hospital Northwell Health
Benefits and acceptance depend on your individual policy. Verify your coverage with admissions before scheduling.
Mather Hospital Northwell Health
100 Highlands Boulevard, Suite 201, Port Jefferson, NY 11777
SAMHSA 24/7 Helpline: 1-800-662-4357
IOP & Outpatient Tracks Offered at Mather Hospital Northwell Health
| Care Levels | Substance use treatment, Treatment for co-occurring substance use plus either serious mental health illness in adults/serious emotional disturbance in children |
| Treatment Setting | Intensive outpatient treatment, Outpatient, Outpatient methadone/buprenorphine or naltrexone treatment, Regular outpatient treatment |
| Medications Available | Buprenorphine used in Treatment, Naltrexone used in Treatment |
CBT & Allied Therapies at Mather Hospital Northwell Health
Conditions Addressed at Mather Hospital Northwell Health — Alcoholism & More
Specialty Pathways at Mather Hospital Northwell Health — Women's Program & More
Counseling at Mather Hospital Northwell Health — Family-Inclusive Sessions
On-Site Testing at Mather Hospital Northwell Health — Drug & Alcohol Screening
Wraparound Supports & Accommodations at Mather Hospital Northwell Health
Setting & House Rules at Mather Hospital Northwell Health — Hospital-Based
Paying for Care at Mather Hospital Northwell Health — Insurance & Self-Pay
Carriers Accepted
Other Payment Pathways
Plan coverage depends on your individual benefits. Call admissions to confirm what your policy covers and any cost-share before you commit.
Adolescent & Adult Intake at Mather Hospital Northwell Health
Ages Served
Gender Tracks
Mather Hospital Northwell Health — Joint Commission Accredited
Full Credential List
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Common Questions About Care at Mather Hospital Northwell Health
Records on file indicate this program accepts both Medicaid and Medicare. Specific eligibility rules, covered services, and authorization steps differ by state and plan tier. The admissions team can run a benefits check and walk through any cost-share before you schedule.
Medication-assisted treatment (MAT) is offered with Buprenorphine used in Treatment, Naltrexone used in Treatment. These FDA-approved medications ease withdrawal and reduce craving while clients begin therapy. The treating physician sets dosing and the long-term plan based on an individual clinical assessment.
Intensive outpatient (IOP) typically runs 9 to 12 hours per week, with morning or evening tracks built around work and school schedules. Programming combines group therapy, individual sessions, and skills practice. Admissions can confirm the cohort schedule and which track has openings.
Yes, this site treats adolescents in an age-appropriate program. Teen tracks typically weave in family sessions, academic continuity supports, and developmentally tailored therapy. Admissions can walk parents and guardians through consent requirements and what a typical week of programming covers.
Gender-responsive programming gives women space to work on trauma, relationships, and parenting in a setting tailored to their needs. Some sites coordinate childcare or family housing alongside treatment. If pregnancy or postpartum care is part of the picture, ask admissions about pregnancy-safe protocols.
Aftercare planning starts well before discharge. Typical paths include step-down to outpatient services, referrals to sober-living homes, alumni group meetings, and warm hand-offs to community recovery resources. Many programs maintain alumni networks so peer support and accountability continue once formal treatment is complete.
Yes — both family counseling and marital or couples counseling are offered. Sessions are sequenced through the program and continue into aftercare. Working with relatives helps rebuild trust, name healthy boundaries, and prepare the home environment so it can hold up the recovery work after discharge.
Yes — gambling disorder is treated here, frequently within an integrated co-occurring track when substance use is also in the picture. Clinicians draw on CBT and Motivational Interviewing adapted for behavioral addictions, paired with financial-recovery planning and connections to peer-support communities focused on gambling recovery.
Yes, this program is hosted inside a general hospital, so medical complications tied to withdrawal or co-existing conditions can be managed in-house. That matters most for clients detoxing from alcohol, benzodiazepines, or opioids who also need medical oversight for other diagnoses during the acute phase of care.
Transportation assistance is part of the program — appointments, group sessions, and admissions logistics can be supported. Eligibility and service radius depend on the track: outpatient ride support, residential intake pickups, and aftercare appointment transport are typically handled through separate pathways. Admissions can confirm what fits your situation when you call.
Total cost depends on program length, level of care, and the specific services involved. Most sites can set up payment plans or point to outside financing partners. A confidential call to admissions gets you a tailored cost estimate for your situation rather than a guess based on a generic price sheet.
This site offers general information about addiction treatment centers. It is not a substitute for professional medical advice, diagnosis, or treatment. In a mental health crisis, call 988 (Suicide & Crisis Lifeline) or 911 right away. For substance use guidance, SAMHSA can be reached at 1-800-662-4357.
Records are drawn from the SAMHSA Treatment Locator, state licensing databases, and center submissions.



