Karen A. Fleiss, PhD

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

attention deficit hyperactivity disorder (ADHD), oppositional defiant disorder, disruptive behavior disorder, parent training, behavior disorder, behavior therapy

Credentials

Positions
  • Clinical Assistant Professor, Department of Child and Adolescent Psychiatry
  • Clinical Assistant Professor, Department of Psychiatry
  • Clin Dir Long Island Campus
Education and Training
  • PhD from Yeshiva University, 1989

Locations and Appointments

2 Insurance Plans Accepted
  • United Health Care Options PPO (NYULMC Employees)
  • United Healthcare Choice (NYULMC Employees)
*Insurance listed above may not be accepted at all office locations. Please confirm prior to each visit. The information presented here may not be complete or may have been changed.
NYU Child Study Center

1981 Marcus Avenue, Suite C102
New Hyde Park, NY 11042

NYU Child Study Center

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

Welcome back!

As a returning patient for this doctor, please schedule an appointment using your MyChart at NYU Langone account.

Learn more about MyChart at NYU Langone.

Publications

  • Children with ADHD treated with long-term methylphenidate and multimodal psychosocial treatment: impact on parental practices

    Hechtman, Lily; Abikoff, Howard; Klein, Rachel G; Greenfield, Brian; Etcovitch, Joy; Cousins, Lorne; Fleiss, Karen; Weiss, Margaret; Pollack, Simcha Hechtman, Lily; Abikoff, Howard; Klein, Rachel G; Greenfield, Brian; Etcovitch, Joy; Cousins, Lorne; Fleiss, Karen; Weiss, Margaret; Pollack, Simcha
    Journal of the American Academy of Child & Adolescent Psychiatry. 2004 Jul. 43 (7): 830-838

  • Social functioning in children with ADHD treated with long-term methylphenidate and multimodal psychosocial treatment

    Abikoff, Howard; Hechtman, Lily; Klein, Rachel G; Gallagher, Richard; Fleiss, Karen; Etcovitch, Joy; Cousins, Lorne; Greenfield, Brian; Martin, Diane; Pollack, Simcha Abikoff, Howard; Hechtman, Lily; Klein, Rachel G; Gallagher, Richard; Fleiss, Karen; Etcovitch, Joy; Cousins, Lorne; Greenfield, Brian; Martin, Diane; Pollack, Simcha
    Journal of the American Academy of Child & Adolescent Psychiatry. 2004 Jul. 43 (7): 820-829

  • Academic achievement and emotional status of children with ADHD treated with long-term methylphenidate and multimodal psychosocial treatment

    Hechtman, Lily; Abikoff, Howard; Klein, Rachel G; Weiss, Gabrielle; Respitz, Chara; Kouri, Joan; Blum, Carol; Greenfield, Brian; Etcovitch, Joy; Fleiss, Karen; Pollack, Simcha Hechtman, Lily; Abikoff, Howard; Klein, Rachel G; Weiss, Gabrielle; Respitz, Chara; Kouri, Joan; Blum, Carol; Greenfield, Brian; Etcovitch, Joy; Fleiss, Karen; Pollack, Simcha
    Journal of the American Academy of Child & Adolescent Psychiatry. 2004 Jul. 43 (7): 812-819

Read All Publications (4)