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NYU Langone Provider

Karen A. Fleiss, PsyD

NYU Langone Provider
  • Specialties: Child & Adolescent Psychology, Child & Adolescent Psychiatry
  • Treats: Children
  • Language: English
  • Phone: 516-358-1808
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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 in children
  • behavior disorder
  • disruptive behavior disorder
  • oppositional defiant disorder
  • behavior therapy

Education and Training
  • PsyD from Yeshiva University, 1989

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This provider accepts the following insurance plans.

  • Aetna
    • Aetna EPO (AMEX employees)
    • Aetna POS (American Express Employer)
  • Anthem Blue Cross Blue Shield
    • BCBS EPO (BlackRock Employees)
    • BCBS EPO (LICH 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 (Sunset Park/Family Health Center Employees)
    • BCBS PPO (BlackRock Employees)
    • BCBS PPO - Empire PPO (Sunset Park/Family Health Center Employees)
  • United Healthcare
    • Unite Healthcare (NY University Care Plan)
    • United Healthcare Choice (AMEX employees)
    • United Healthcare Choice (Blackrock employees)
    • United Healthcare Choice (CBS employees)
    • United Healthcare Choice (Simon
    • United Healthcare EPO (NYU Langone Health Employees)
    • United Healthcare Indemnity (NYU Langone Health Employees)
    • United Healthcare Nexus (Amex Employees)
    • United Healthcare Plus (NYU Langone Health Employees)
    • United Healthcare Student Resources (NYU)
    • United Healthcare Value, Advantage and HDHP (New York University 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.

Karen A. Fleiss, PsyD does not accept insurance.

Locations and Appointments

Child Study Center - Long Island

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

Academic office

1991 Marcus Avenue

Suite 104

Lake Success, NY 11042



These focus areas and their associated publications are derived from PubMed and the MeSH term library. *
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Read All Publications (5)