About Sylvia Ryszewska, PhD
Sylvia Ryszewska, PhD, is a clinical psychologist and clinical supervisor at Brightline’s Brooklyn clinic. She also provides online care for families in Connecticut and New Jersey. Dr. Ryszewska works with kids and teens who are navigating anxiety, depression, trauma, externalizing behaviors, and suicidal ideation and behavior. She typically utilizes cognitive behavioral therapy, parent management training, and dialectical behavior therapy. She is a Linehan board-certified dialectical behavior therapy clinician.
Dr. Ryszewska has worked in schools, community clinics, private practice, psychiatric emergency rooms, and inpatient hospitals. She’s conducted extensive diagnostic evaluations, psychological testing, crisis management, individual therapy, family therapy, and group therapy.
Professional Summary
Education:
Doctor of Philosophy in Clinical Psychology (PhD), Fairleigh Dickinson University
Master of Arts in Developmental Psychology (MA), Teachers College, Columbia University
Bachelor of Arts in Psychology (BA), CUNY Hunter College
Therapeutic approaches and certification(s): Cognitive behavioral therapy (CBT), dialectical behavioral therapy (DBT), trauma-focused cognitive behavioral therapy (TF-CBT), acceptance and commitment therapy (ACT), parent management training (PMT), parent behavior management training (PBMT), eye movement desensitization and reprocessing (EMDR)
License Type(s): Licensed Clinical Psychologist
States where clinician is licensed: Connecticut (5119), New Jersey (35SI00799700), New York (025840)
Experience:
Staff Psychologist & Associate Director of Research & Training, Center for Cognitive & Dialectical Behavior Therapy (Manhattan & Long Island)
Training:
Extern, Four Winds Hospital
Extern, Center for Psychological Services
Extern, New Jersey Public Schools
Extern, Child Mind Institute
Intern, Kings County Hospital (Child track)
Postdoctoral fellow, Center for Cognitive & Dialectical Behavior Therapy
Brightline providers online therapy and medication management services for families who aren't able to make it to one of our clinics around New York City.
Meet our online clinical providers

Heather Buzbee, CPNP-PC, PMHNP-BC

“I love helping families find holistic, evidence-based solutions to improve the mental health and well-being of their kids and teens."
Jessica Cohen, LCSW

Jessica Cohen is a Licensed Clinical Social Worker (LCSW) with focus areas of Anxiety, Depression, Disruptive Behaviors, Trauma, ADHD, Divorce/Separation, LGBTQ+, BIPOC, Child & Adolescent.
Ephat Russcol, MD

“I truly love all my Brightline families and I value working as a team to help children be their best selves!”
Sylvia Ryszewska, PhD

"I am most passionate about providing early intervention care as it can and does change the lives and trajectory of kids and families."
Nikki Vega, LCSW

"I’m passionate about helping families strengthen connection while building skills that support their child’s confidence and independence."
Charlie Xiao, PMHNP

“I am passionate about making a positive impact on each child's life and helping them overcome their struggles and challenges. Their resiliency and successes, large and small, are what inspire me each and every day."
Brightline providers online therapy and medication management services for families who aren't able to make it to one of our clinics around New York City.
Meet our online clinical providers

Heather Buzbee, CPNP-PC, PMHNP-BC

“I love helping families find holistic, evidence-based solutions to improve the mental health and well-being of their kids and teens."
Ephat Russcol, MD

“I truly love all my Brightline families and I value working as a team to help children be their best selves!”
Sylvia Ryszewska, PhD

"I am most passionate about providing early intervention care as it can and does change the lives and trajectory of kids and families."
Subina Sharma, LMHC-DP

“What inspires me most about my work is helping families build resilience and connection while supporting kids as they develop confidence and emotional balance.”
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What is a psychologist?
Our psychologists are independently licensed providers who have completed their doctoral degree (which means they are a doctor of philosophy or psychology), including a pre-doctoral internship and postdoctoral fellowship. They are qualified to do diagnostic evaluations, therapy, and psychological testing. Psychologists do not prescribe medication, but they are able to directly refer families who need that service to a Brightline psychiatrist or psychiatric nurse practitioner.