About Us

We are a private practice clinic located in Southern California.  Our doctors are internationally recognized specialists for their assessment and treatment of ADD/ADHD and Related Disorders.


Our clinic is for children, teenagers and adults, and we have sub-specialty for those those with ADHD and have a high IQ.


Our Specialty

After serving over 20 years on the clinical faculty of the Yale Medical School, Dr. Brown has now relocated to open his new clinic in Manhattan Beach, CA where he offers assessment and treatment for children, teenagers and adults using methods and a cutting-edge model he developed at Yale.

In the Brown Clinic children, teenagers and adults can get comprehensive evaluation and treatment for attention and related problems which may be accompanied by difficulties that undermine success in school, college, grad school, employment, social relationships and/or family life.

  • Motivation problems

  • Anxiety/depression

  • Learning Disorders

  • Mood disorders

  • Obsessive-Compulsive Disorders

  • Behavior Problems

  • Asperger and Autism Spectrum

  • Substance Use Disorders

  • Sleep/Awakening Problems

  • Cognitive problems of menopause

In this clinic those diagnosed with attention and learning problems can also receive expert psycho-educational testing which may be required to obtain accommodations in schools, universities and for SAT, ACT, GRE, MCAT, LSAT, GMAT, or professional credentialing tests. Other available services include psychotherapy, cognitive behavioral therapy, family therapy, and medication monitoring.

Meet the Team

Ryan J. Kennedy, DNP, NP-C

Thomas E. Brown, PhD

 Dr. Brown earned his Ph.D. in Clinical Psychology at Yale University and then served on the Yale faculty for 25 years. He has published 30 peer-reviewed  scientific journal articles and 5 ground-breaking books on ADD/ADHD.  Dr. Brown is is an elected Fellow of the American Psychological Association.

Dr. Kennedy specializes in assessment and treatment of ADHD and related problems. He has collaborated in research and writing with Dr. Brown since 2011. He has also published peer-reviewed journal articles, chapters and research posters at national and international conferences in the field.


Dr. Kennedy is here full-time and  provides assessment, treatment, medication management and CBT treatments for ADHD and related problems.

Liza Somilleda, MA

Liza Somilleda, M.A. is an experienced educator with both Education Specialist, and Education Administration credentials, more than 15 years of school based experience, and extensive training in ABA.  She assists parents in understanding the needs of their children with problems in attention, learning and behavior. Liza is also a certified PEERS social skills provider, and she specializes in working with children in middle and high school.


© 2020  by Thomas E. Brown, Ph.D. 

Manhattan Beach, CA

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