About

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Clark R. Goldstein, Ph.D., is the founder of Growth Psychology, P.C. He is a former Clinical Assistant Professor of Child and Adolescent Psychiatry at the NYU School of Medicine at the Child Study Center. He specializes in the evaluation and treatment of anxiety and mood disorders in children, teens, and adults. Dr. Goldstein is also experienced in treating children with behavioral problems, video game and computer misuse, high functioning Autism Spectrum Disorder, ADHD, Tic and Tourette’s Disorder and trichotillomania. He has experience helping people work to overcome separation anxiety disorder, panic disorder, agoraphobia, social anxiety disorder, obsessive compulsive disorder, generalized anxiety disorder, post-traumatic stress disorder, attention deficit hyperactivity disorder, oppositional defiant disorder, impulse control disorders, depressive disorders, and mild social skills deficits. He co-led a PEERS group, which is an evidence based group designed to help improve the social lives of teens who are on the Autism Spectrum.

Dr. Goldstein earned his Doctorate of Philosophy in psychology and a master’s degree in psychology at Boston University, where he was the recipient of a prestigious Presidential Fellowship.  He earned his bachelor’s degree in psychology at the University of Virginia, where he graduated with high distinction. He was awarded the Anita Saltz Postdoctoral Fellowship for two years at the NYU Medical Center Child Study Center. He trained extensively at The Child and Adolescent Fear and Anxiety Treatment Program at Dr. David Barlow’s Center for Anxiety and Related Disorders (CARD) at Boston University treating children, teenagers, and adults, and he brings additional experiences from the May Institute, where he completed his predoctoral internship. He has also helped children,adults, and families at the Harvard affiliated Cambridge Hospital and at the Boston Medical Center. He was also involved with the supervision of advanced doctoral students and assisted in the adaptation of Parent-Child Interaction Therapy (PCIT) for children with Separation Anxiety Disorder (SAD). Dr. Goldstein taught a class in psychopathology while at Boston University.

Dr. Goldstein has co-authored articles for several journals, including Child and Behavior Therapy and the Journal of Psychiatric Practice, and he has co-authored chapters in the Oxford Handbook of Anxiety and Related Disorders and the Handbook of Child and Adolescent Anxiety Disorders.  He is a former co-editor of the Child and Adolescent Anxiety Special Interest Group Newsletter of the Association for Cognitive and Behavioral Therapies (ABCT) and serves as an Associate Editor of the journal Behavior Therapist.

Previously, Dr. Goldstein served as a clinical psychologist at the Child Mind Institute where he worked with children, adults, and their families working to overcome anxiety, depression, and behavioral issues. His responsibilities included the training and supervision of advanced doctoral students and postdoctoral fellows. He was actively involved in the Intensive Treatment Program which focused on intensive treatment for those with Obsessive Compulsive Disorder (OCD) as well as the supervision of advanced doctoral students. Dr. Goldstein also ran support groups for family members of people struggling with OCD. He is the current Leader of the Child and Adolescent Anxiety Special Interest Group of ABCT.

Dr. Goldstein has presented to teachers, parents, and special education associations at schools in Manhattan, Queens, the Bronx, and Long Island. He also has been a speaker at various corporations, including Viacom, Credit Suisse, and Cleary, Gottlieb, Steen, and Hamilton, LLP.  He has presented at New York University Medical Center’s Psychiatry’s Grand Rounds as well as multiple times at the Grand Rounds of Rockland County’s Children Psychiatric Center. He was the invited keynote speaker at the New Hampshire Infant Mental Health Alliance conference in 2017.  He has been a guest several times on Sirius Radio’s Doctor Radio channel and also been a guest co-host. He has presented on topics including identifying and helping anxious children and students, reducing conflict with children, helping siblings get along, helping identify and cope with executive functioning challenges, and social media and video game use and misuse. If you would like Dr. Goldstein to speak at your business, school, SEPTA, or other organization, please contact him here.


Nicholette-Lewis

Nicholette Lewis, M.A.

Advanced Doctoral Candidate and Growth Psychology Extern


Nicholette Lewis, M.A., is an advanced doctoral candidate in the Ph.D. clinical psychology program at Adelphi University. She specializes in treating children,adolescents, and adults, in the United States and abroad, supporting individuals and families with behavioral problems, developmental delays, learning disabilities and emotional difficulties. She is also a valuable member of the Child and Adolescent Research (CARE) Lab at Adelphi which focuses on studying the development of anxiety, depression, emotion regulation difficulties, and other factors in childhood. Nicholette has presented research at the Miami International Child & Adolescent Mental Health Conference investigating the impact of parental symptoms, like depression, on the emotional life of their children. Nicholette focuses on utilizing the best evidence-based interventions to treat the diverse array of needs for each client. Nicholette provides targeted and compassionate treatment while supplying her clients with the knowledge and support to understand and overcome their difficulties.


Ronnit-Nazarian

Ronnit Nazarian, M.S.

Advanced Doctoral Candidate and Growth Psychology Extern


Ronnit Nazarian, M.S., is a 4th-year advanced doctoral candidate in the Psy.D. school psychology program at St. John’s University. She specializes in the treatment of social anxiety, separation anxiety, generalized anxiety, and depression in children, adolescents, and adults. She has co-led an evidenced-based social anxiety group for young adults overcoming social stressors occurring in their daily life. She has also worked at the Yale Parenting Center and developed effective parenting strategies for children exhibiting behavioral problems. She has also worked at Scarsdale High School developing individualized education plans, conducted psychological assessments, and helped high school students with social stressors, depression, anxiety and autism. She has also presented at numerous conferences on a wide range of topics, including parents’ perception of student behavior, interpersonal acceptance & rejection, racial identification, young biracial children’s psychosocial adjustment, executive functioning, and single-case methodology. Ronnit tailors evidence-based treatments to provide her clients’ with the support and tools they need to be successful in overcoming their individual struggles.