About Neurofeedback Services Of New York

More than just a psychotherapy or neurofeedback clinic in New York, Mark and his team offer a full scope of non-invasive, holistic assessment and treatment interventions.

Addressing The Root Issue

We provide expert integrative care that addresses the root of mental health issues and works to help the client better understand the inner workings of their body and minds

Experience & Innovation

For over 15 years, owner and Clinical Director, Mark Llewellyn Smith has worked alongside top bioengineers in the field leading to his development of Infraslow Fluctuation (ISF) Neurofeedback training

In-depth mapping & reports

We administer and interpret comprehensive QEEG brain mapping and create diagnostic reports for therapists in the clinical practice of neurofeedback

Integrated Talk Therapy

Each clinician incorporates traditional talk therapy along with neurotherapy interventions to provide full clinical support to the client

Help for all ages

We work with all age groups: children, adolescents, teens and adults

Cutting-Edge Technology

Our team utilizes the latest technological innovations and evidence-based neuroscientific approaches to wellness

Workshops & trainings across the globe

More than just a clinician, Mark Smith and his team have held neurofeedback and QEEG workshops on four continents and continues to educate and train neurofeedback practitioners in international workshops and conferences around the globe.

Group & individual mentoring

Mark also provides web-based group and individual mentoring to other clinicians and neurofeedback providers interested in incorporating ISF Neurofeedback and QEEG into their practice


Our Team

Mark Smith

Mark Smith, LCSW, BCN, QEEG-D

Founder / Owner

Mark Smith is a licensed clinical social worker, whose early career was established in the world of work, providing clinical services to the nurses, doctors, and staff of NYU Medical Center and Downtown Hospital in New York City. He is the owner and Clinical Director of Neurofeedback Services of New York.

In private practice since 2000, Mark is a leading developer, teacher, and clinician of neurofeedback interventions for a variety of disorders. He was the first to use Z-score training in clinical practice. As an early adopter and developer of Z-score training, he worked closely with Thomas Collura of Brainmaster Inc. and Robert Thatcher from Applied Neuroscience Inc. to develop Z-score neurofeedback interventions for a host of clinical presentations. These protocols are arguably the most frequently used interventions in Z-score training worldwide.

Infra-slow Fluctuation (ISF) training, now a primary intervention in EEG-biofeedback Therapy, was developed by Mark from his experience training the “Ultradian” rhythms: the lowest energy the brain produces. This type of neurofeedback has had a profound, positive impact on the lives of his clients, as well as, the clients of the hundreds of therapists he has taught in the last several years. For the last two years, Mark has contributed to the establishment of sLORETA training with Thomas Collura and others.

Leila Ostad, MS, MSW

Clinical Social Worker

Leila Ostad is a clinical social worker who earned a Master of Science in Social Work degree at Columbia University School of Social Work. Leila provides both psychotherapy and neurofeedback at Neurofeedback Services of New York. She is a graduate of Rutgers College with a Bachelor of Arts degree in Psychology and minor in Biological Sciences. While at Rutgers College, she completed a honors research project examining depression following traumatic life events. She earned her Master of Science degree in Biomedical Science at the University of Medicine and Dentistry of New Jersey where she studied neuroanatomy.

In the past, Leila has provided individual psychotherapy and facilitated group therapy sessions at the Federal Defenders of New York, the Center for Court Innovation, and New York-Presbyterian/Cornell Medical Center. In her free time, Leila enjoys volunteering with her therapy dog, Rufus, to provide comfort to those in need.

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