Detoxification, Rehabilitation, and Psychiatry: Integrated Care Advancing Recovery

At Stony Brook Eastern Long Island Hospital (SBELIH), we are proud to offer one of Suffolk County’s most respected inpatient behavioral health programs. If you—or someone you care about—are considering treatment for substance use or mental health challenges, we are here to support you.

We recognize the strength it takes to seek help, and we honor that courage. Our multidisciplinary team—comprising board-certified physicians, nurses, alcoholism and substance use counselors, social workers, creative arts therapists, and dietitians—works collaboratively to develop individualized care plans tailored to each patient’s unique needs. Through a thoughtful integration of medical care, psychology, and evidence-based behavioral therapies, we support patients on their journey toward recovery and well-being.

Our inpatient services provide comprehensive, compassionate care within a safe and therapeutic environment. Treatment includes detoxification, rehabilitation, and psychiatric care, with medication-assisted treatment available for opioid and alcohol use disorders as well as mental health conditions. All services are accredited by The Joint Commission and licensed by the New York State Office of Mental Health and/or the New York State Office of Addiction Services and Supports.

Our Programs

Inpatient Substance Use Rehabilitation:
A comprehensive program offering evidence-based treatment approaches, including education, mindfulness practices, life skills development, medication management, and both group and individual counseling. Discharge planning is thoughtfully integrated to support a smooth transition to continued care.

Inpatient Detoxification:
Provides safe, medically supervised detoxification with comprehensive clinical support, medication management, and discharge planning to help patients begin recovery with comfort and stability.

Inpatient Psychiatry:
Offers personalized psychiatric care in a healing environment, including medication management and therapeutic interventions. Individual and group therapy and discharge planning support patients in achieving stabilization and improved mental health.


Jarid Pachter, DO
SBUH Medical Board
Medical Director, Inpatient and Outpatient Addiction Services
Addiction Medicine Fellowship Program Director
Division Chief for Addiction Medicine
Assistant Professor, Family and Addiction Medicine
Diplomate, American Osteopathic Association, Family Medicine
Diplomate, American Society of Addiction Medicine

Douglas K. Hoverkamp, MD
Director, Department of Psychiatry, SBELIH
Diplomate, American Board of Psychiatry  

Eduardo Constantino, MD
Professor of Clinical Psychiatry
Program Director, SBELIH Psychiatry Residency Program
Diplomate, American Board of Psychiatry

Brendan Beecher, DO
Clinical Assistant Professor
Attending Psychiatrist
Diplomate, American Board of Psychiatry

Christian Witherell, PMHNP-BC
Psychiatric Nurse Practitioner, Board Certified
Instructor of Clinical Psychiatry