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Karen A. Fleiss, PsyD

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About Me

I have always been enchanted by children and their ability to simply “be” in the world, just as they are. I find them to be extraordinarily resilient, even under the most serious of circumstances.

I wanted to further understand child development, parental roles, nature versus nurture, and the influence of the school environment on a child’s growth. More broadly, I wanted to know more about how childhood disorders emerge. For these reasons, I decided to leave my first career in a corporate job to pursue child clinical psychology, a profession I found to be satisfying and fulfilling.

I am the clinical director of NYU Langone’s Child Study Center—Long Island, where my team and I provide families with parent–child interaction therapy, school consultation, individual and family therapy, social skills training groups, medications for a wide variety of clinical disorders, and neuropsychological testing.

For the past 17 years, I have also been the director of the Child Study Center’s Summer Program for Kids, an evidence-based day camp for children 7 to 11 years old who have been diagnosed with attention deficit hyperactivity disorder and behavior disorders.

I was also the site coordinator of a landmark multisite clinical trial—the Multimodal Treatment of Attention Deficit Hyperactivity Disorder (MTA) study—designed to determine the most effective treatments for children with attention deficit hyperactivity disorder.

Treatment must include the parents if we are to best help the child. If a child is struggling in school, the teacher’s input and involvement are also important to successful treatment. The key is regular discussions among all professionals caring for the child, allowing us to monitor progress and symptoms from various angles.

Conditions and Treatments

  • parent training
  • attention deficit hyperactivity disorder
  • oppositional defiant disorder
  • disruptive behavior disorder
  • behavior disorder
  • behavior therapy


  • Clinical Associate Professor, Department of Child and Adolescent Psychiatry
  • Clinical Associate Professor, Department of Psychiatry
  • Director, NYU Summer Program for Kids
  • Clinical Director, NYU Langone Child Study Center-Long Island
Education and Training
  • PsyD from Yeshiva University, 1989

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Insurance Plans Accepted

This provider accepts the following insurance plans.

  • Aetna
    • Aetna POS (American Express Employer)
  • Blue Cross Blue Shield
    • BCBS EPO (BlackRock Employees)
    • BCBS EPO (NYU Winthrop Employees)
    • BCBS EPO - Empire EPO (NYU Langone Employees)
    • BCBS EPO - Empire EPO (Sunset Park/Family Health Center Employees)
    • BCBS EPO - Empire NYU Care (NYU Langone Employees)
    • BCBS EPO - Empire NYU Care (NYU Winthrop Employees)
    • BCBS EPO - Empire NYU Care (Sunset Park/Family Health Center Employees)
    • BCBS PPO (BlackRock Employees)
    • BCBS PPO (NYU Winthrop Employees)
  • United Healthcare
    • United Healthcare Choice (AMEX employees)
    • United Healthcare Choice (Blackrock employees)
    • United Healthcare Choice (CBS employees)
    • United Healthcare EPO (NYU Langone Health Employees)
    • United Healthcare Indemnity (NYU Langone Health Employees)
    • United Healthcare Plus (NYU Langone Health Employees)
This list of insurances changes regularly, and insurance plans listed may not be accepted at all office locations for this provider. Before your appointment, please confirm with your insurance company that this provider accepts your insurance.

Locations and Appointments

NYU Child Study Center

1991 Marcus Avenue, Suite 104
New Hyde Park, NY 11042

NYU Child Study Center

1 Park Avenue, 7th Floor
New York, NY 10016

Research Academic Contact

Academic office

1981 Marcus Avenue

Lake Success, NY 11042



Research Interests Timeline

These focus areas and their associated publications are derived from PubMed and the MeSH term library. *
represents one publication
*Due to PubMed processing times, the most recent publications may not be reflected in the timeline.


Read All Publications (4)