“Thanks for giving me my life back. I’m so happy!”


As part of our exclusive inpatient residential treatment program, The Dunes East Hampton serves as a dual diagnosis treatment center on Long Island, NY. Many individuals struggling with addiction also experience co-occurring mental health conditions. Our program is specifically designed to treat both substance use and mental health disorders at the same time, giving clients the best opportunity for lasting recovery.
The Dunes puts all its resources into providing both a drug and alcohol addiction treatment program and mental health treatment program for dual diagnosis residents. By dedicating extensive resources to integrated care, The Dunes has established itself as a leader among dual diagnosis treatment centers in the Northeast. Our high-end residential setting allows us to provide comprehensive support for both addiction and mental health in a private, comfortable environment.
Dual diagnosis occurs when an individual is struggling with both a substance use disorder and a co-occurring mental health condition. These conditions often influence one another—the mental health issue may contribute to substance use, or addiction may worsen or trigger mental health symptoms.
At The Dunes East Hampton, every client entering our inpatient residential program receives a comprehensive psychological evaluation to identify any accompanying mental health disorders. Research shows that roughly 50 percent of people in the U.S. with an addiction also have a mental health condition.
We specialize in treating dual diagnosis cases involving:
Some individuals may not show signs of a mental illness until after they begin abusing drugs or alcohol. Regardless of when symptoms appear, we address dual diagnosis through a holistic approach that includes evidence-based therapies along with integrative practices such as meditation, acupuncture, and nutritional support.
At The Dunes East Hampton, we believe true healing happens when both addiction and mental health are treated together with care and compassion. After a thorough psychological evaluation, clients who are living with co-occurring disorders begin a personalized, thoughtfully structured treatment plan designed to support the whole person—not just one part of their experience.
Recovery unfolds in a peaceful, private setting on Long Island, where clients can focus on healing without distraction. Here, they become part of a warm, supportive community while receiving care that nurtures the mind, body, and spirit. Our holistic approach includes evidence-based therapies alongside integrative practices that promote balance and inner calm.
We understand that treating addiction without also addressing the underlying mental health condition often leaves people vulnerable to setbacks. That’s why our program is built to support lasting change—helping each person build a strong, steady foundation for long-term sobriety and well-being.
In addition to our residential program, we also offer comprehensive dual diagnosis care on an outpatient treatment basis. This option is designed for those who live in the area or prefer to receive treatment while remaining connected to their daily lives.
Clients begin with a thoughtful evaluation, after which our clinical team creates a personalized plan to address both addiction and any co-occurring mental health conditions. Whether you participate in our Residential or outpatient program, you’ll receive the same integrated level of care—helping you build a strong foundation for lasting recovery in a supportive and compassionate environment.

