Catherine O’Sullivan, PsyD
Catherine O’Sullivan, Psy.D.
551-250-1017 x 2
dr.c.osullivan@trinitypsychology.com
Dr. O'Sullivan is the Director and a clinical supervisor at Trinity Psychological Services. She practices out of the Orangeburg, NY and Ridgewood, NJ locations as well as providing virtual services.
Services and Specialties:
I specialize in providing
Neuropsychological evaluations
Psychotherapy (CBT/REBT) for children through adults
Parent training/support
Autism diagnostic evaluations
I work with children through adults and love to help my clients learn about themselves and find their personal strengths.
Through testing, I often assess clients for learning disabilities, ADHD, autism spectrum disorders, executive dysfunction, language related learning challenges, and more.
This skill also allows me to have unique insight as a therapist because I specialize in helping individuals who are neurodiverse.
Beyond evaluations and individual therapy, I partner with parents through practical training and help clients build real-world tools to thrive.
Together, we’ll celebrate strengths and navigate life’s challenges with practical, supportive strategies.
Training and Experience:
Catherine O’Sullivan, Psy.D., received her Doctor of Psychology degree from St. John’s University. Dr. O’Sullivan achieved membership in Pi Gamma Mu, Psi Chi, and Alpha Chi Honor Societies, and she was awarded the Dr. Erica Wick Vincentian Mission Award for her commitment to helping those in need. Dr. O'Sullivan was recently nominated to the National Society of Leadership and Success (NSLS).
Throughout her training and professional experience in the field of Psychology, Dr. O’Sullivan developed skills in neuropsychological and psychoeducational assessment, psychotherapy, parent training, and behavioral management of children and young adults. She has received training in many institutions, including schools in Rockland County, Albert Einstein College of Medicine, NYU Child Study Center in the Autism Spectrum Disorders Clinical and Research Program, Blythedale Children’s Hospital, and the Center for Psychological Services at St. John’s University. She also has specific training and experience in working with individuals affected with a range of developmental and intellectual disabilities.
Dr. O’Sullivan has specialized experience in Cognitive Behavioral Therapy, working with children on the Autism Spectrum, helping children with a history of chronic school failure, brain injuries, and learning disabilities. She also has specific knowledge and training in School Psychology, which facilitates her ability to make appropriate recommendations for children with special needs. Later, while completing her 2 year post-doctoral fellowship in a prestigious neuropsychology private practice in Ridgewood, NJ, she received extensive training and guidance in the diagnosis, remediation, and accommodation of learning disabilities and neurocognitive disorders, especially ADHD, executive dysfunction, dyslexia, and learning disabilities.
About Dr. O'Sullivan:
I love to spend time at home with my family. I have 4 young children and I am a longtime resident of Rockland County, NY. I am also an adjunct instructor at St. Thomas Aquinas College.