It’s time to get back to the life you deserve
With over 45 years of pioneering IOP research and personalized care, Bio Behavioral Institute (BBI) is the first in the U.S to provide an advanced level of specialized care for patients with OCD, BDD and Anxiety Disorders. Our goal at BBI is to help you overcome the challenges that stand between where you are and where you want to be.
We are dedicated to enhancing the quality of life for individuals struggling with their mental health. Our team customizes treatment plans to meet each patient's unique needs, emphasizing family and community involvement. BBI meets you where you are and supports you as you take steps towards a more fulfilling life.


About us
Patients travel from across America and the World to be treated in BBI's specialized IOP program.
At BioBehavioral Institute, we are dedicated to enhancing the quality of life for individuals struggling with their mental health. Our team customizes treatment plans to meet each patient's unique needs, emphasizing family and community involvement.
Our Care
Children and adolescents who are having significant difficulty attending school regularly or have stopped attending school are also candidates for the program.
Personalized Treatment
You are not your symptoms, disorder, or diagnosis. That’s why we personalize your treatment from the beginning—so your quality of life improves in the ways that matter to you.
Real-Life, Hands-On Techniques
Your real life happens outside our office (or via telehealth!). That’s why our teams specialize in hands-on care—coming alongside you to practice and guide you through your daily life using evidence-based practices to provide real results.
Collaborative Approach
At BBI, we work as a team—and as your team. We leverage the expertise and creativity of multiple staff clinicians to surround you with people who see every angle and can achieve more (and better) results.
Our Blogs
Trusted Information for Everyday Health
Sensorimotor OCD: When You Can’t Stop Noticing Your Own Body
Just Right OCD: Understanding “Not Just Right” Experiences and Finding Relief
New Year, New Me: How to Make Your Resolutions Stick
"I came to Bio Behavioral after years of being diagnosed from having neuroses to schizophrenia. It was there that I found people who understood me and helped me. They interviewed me at length and knew I had OCD. A care plan was implemented and they were with them every step of my journey. Everyone there on the team had studied OCD and knew how to diagnose and treat. I can never thank Bio Behavioral enough”
"I’d wrestled with swings of mood and feelings of alienation and loneliness my entire life. By the time I was the mother of three young girls I realized I was in need of help with my mental health.
I spent approximately 20-25 years, on and off, mostly on, bouncing from one provider to another, seeking treatment for depression and anxiety.
One day, during a couple years break from treatment, I listened to a program on OCD. The speakers were describing me and my family life. I tracked down the participants in the program. I was referred to Dr. Nez.
Dr. Nez for the first time in my life, explained to me in a very clear and understandable way, what I was dealing with. She taught me how to re-frame my perceptions and how to improve or modify my responses.
She has helped me and members of my family. She saved my husband’s and my marriage."
Forever grateful,
"As with many people with OCD, I did not seek treatment for several years after my symptoms began. Being in the healthcare profession when I sought treatment, I wanted to work with a therapist who had both extensive clinical and academic credentials, and with a practice that offered a myriad of treatment options.
After extensive research, I began treatment at the Biobehavioral Institute (BBI) under the direction of their Director, Dr. Fugen Neziroglu, who is a world renowned expert in treating OCD. BBI has extensive experience, and resources to treat OCD, and offers several treatment options including individual treatment sessions, and intensive therapy sessions which are available in their office, or the patient’s home.
Despite having significant limitations, and sometimes debilitating symptoms from my OCD, I credit my treatment at, and support from BBI with allowing me to continue to work in a very stressful career, and make extensive improvements in my personal life.
I would recommend anyone seeking treatment for OCD to reach out to BBI."

You can experience life again. Let’s take steps together.
At Bio Behavioral Institute, we’re here to be your team and get you back to the life you deserve. Schedule your consultation and take the first step towards a more meaningful life.
Call our office at 516-487-7116 or complete the form to schedule your consultation.
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