About Integrity Treatment Partners
Licensed. Accredited. Lived Experience. We bridge the gap between clinical excellence and personal recovery. Proudly serving Nassau County and the South Shore.
The only Joint Commission accredited outpatient provider on Long Island. This Gold Seal of Approval® reflects our commitment to the highest national safety and quality standards.
Proudly holding the highest-level 3-year OASAS certification, recognizing exceptional compliance with New York State addiction treatment regulations.
Mission Statement
At Integrity Treatment Partners, we are driven by a personal and profound commitment to combat the opioid crisis and alleviate the suffering of addiction.
Our founders, deeply touched by the heartbreak of addiction within their own lives and the community, stand united in the mission to offer hope and a path to recovery for those afflicted.
Nestled in the heart of Long Island, we understand the devastating impact of the opioid epidemic on our community. Each statistic is more than a number—it represents a life, a family, and a story. Our mission is to counteract this dire trend by providing compassionate, comprehensive, and evidence-based treatment.
"Together, we strive to restore health, hope, and integrity to lives touched by addiction."
Founded in Recovery
Our leadership team—John, Josh, Mike, Sam, and Danny—didn't just learn about addiction in a classroom.We lived it. Our collective journeys began over 15 years ago when the first of us found sobriety. We know the darkness of addiction, but more importantly, we know the light of recovery.
2022: The First Step
Our first sober living home opens its doors in Freeport, creating a safe haven for men in recovery.
2023: A Vision for More
Integrity Treatment Partners is officially founded. We begin the rigorous licensing process to build a comprehensive outpatient program.
2024: Rapid Expansion
Our second sober home opens in Uniondale.
By November, Integrity Treatment Partners officially opens its doors to clients.
2025: Continued Growth
Integrity becomes a fully accredited outpatient treatment center by the Joint Commission. Our third sober home opens in Freeport, solidifying our network of care across the South Shore.
Serving the South Shore
We are deeply rooted in the community, serving clients from Long Beach, Oceanside, Freeport, Baldwin, Uniondale, and Merrick. We believe help should be easy to reach. That's why we offer transportation, are accessible by train/car, and provide 24/7 support.
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"We treat clients like family because, to us, you are."
Guided by Experience
Our Clinical and Executive Directors lead with professional expertise and personal understanding.
Samantha Callister Callister
Executive Director
LMSW, CASAC-M, CASAC-G
Samantha Jean Callister is a Co-Founder and Executive Director at Integrity Treatment Partners. She is a Licensed Master Social Worker (LMSW) and Credentialed Alcoholism and Substance Abuse Counselor - Master Level (CASAC-M) with a focus on addiction treatment and behavioral health. She holds a Master of Social Work (MSW) from Fordham University and has extensive experience providing counseling and support for individuals with substance use disorders in New York. Based in Long Island, Samantha specializes in evidence-based therapies such as cognitive-behavioral therapy (CBT), dialectical behavior therapy (DBT), and trauma-informed care for co-occurring conditions like anxiety, depression, and PTSD. Her work emphasizes holistic recovery, family involvement, and relapse prevention, aligning with OASAS guidelines to deliver compassionate, client-centered care. Samantha was crucial in founding Integrity Treatment Partners alongside Michael Mechow, John Anderson, and Josh Goldfeder.
Michael Mechow Mechow
Clinical Director
CASAC-II, CASAC-G
Michael Mechow, affectionately known as 'Mech' or 'Mechow,' is a Co-Founder and Clinical Director at Integrity Treatment Partners. Growing up in the West End of Long Beach, New York, Michael has personally helped thousands of men and women recover from alcoholism and addiction over his 14+ year career. He started in 2011 as a CASAC Trainee at an Outpatient in Queens, then spent 9 years at Seafield Outpatient. His experience also includes working for Nassau County Family Treatment Court's new program, which he helped grow from its infancy into the program it is today. At NCFTC, he witnessed over 40 graduations, hailing a new era in family court's options for helping families dealing with addiction and law-related issues. Michael was crucial in founding Integrity Treatment Partners alongside Samantha Callister, John Anderson, and Josh Goldfeder.
Meet the Whole Team
Discover our full staff of medical professionals, clinicians, and peer specialists dedicated to your recovery.
Proudly Serving Nassau County Communities
Integrity Treatment Partners provides outpatient addiction treatment and mental health services to residents throughout Nassau County and surrounding areas. We proudly serve the following communities from our centrally located facility in Baldwin, NY: