Tatyana Mestechkina, Ph.D.

Clinical Training:

Dr. Mestechkina completed her clinical internship and post-doctoral fellowship at the Center for Cognitive-Behavioral Psychotherapy, an internationally-known practice that specializes in the evidence-based treatment of OCD and anxiety disorders. There, she was trained and supervised by Dr. Steven Phillipson, an expert in OCD treatment. 

She completed her pre-doctoral externships at Hofstra University’s Student Counseling Services, as well as the Institute for Rational Counseling. Dr. Mestechkina has also treated patients in specialty clinics including the Phobia and Trauma Clinic, Anxiety and Depression Treatment Clinic, Dialectical Behavior Therapy (DBT) Clinic, Child and Parent Psychotherapy Clinic, and a Forensic Psychology Lab.

Education and Research:

Dr. Mestechkina earned her Ph.D. in Clinical Psychology and M.A. in Clinical Psychology from Hofstra University, an APA-accredited program and winner of the “Outstanding Training Program” award from the Association for Behavioral and Cognitive Therapies (ABCT). She received extensive training in Cognitive Behavioral Therapy (CBT), and Acceptance and Commitment Therapy (ACT). She has contributed to research in interventions for Body Dysmorphic Disorder (BDD), body image concerns, Parent-Child Interaction Therapy (PCIT) development, and cross-cultural parenting. She is a published author and has presented her research at national conferences, including the Association for Behavioral and Cognitive Therapies (ABCT), and the Anxiety and Depression Association of America (ADAA).

Teaching and Supervision:

Dr. Mestechkina provides clinical supervision and training to licensed and unlicensed clinical psychologists as well as student clinicians. She has taught psychology courses at Long Island University’s Brooklyn Campus, Brooklyn College, and Baruch College.


Professional Affiliations:

  • Association for Behavioral and Cognitive Therapies (ABCT)

  • International OCD Foundation (IOCDF)

  • Association for Contextual Behavioral Science (ACBS)

  • NYC-CBT Association

  • The TLC Foundation for Body-Focused Repetitive Behaviors (BFRB)

  • New York State Psychological Association (NYSPA)

Click here to view Dr. Mestechkina's articles and contributions to mental health awareness.

Click here to view Dr. Mestechkina's profile on Psychology Today.

Aliza Goldstein, Psy.D. 

Clinical Training:

Dr. Goldstein completed her predoctoral internship at Northwell Health’s Zucker Hillside Hospital where she developed skills in treating a wide range of psychiatric disorders. She had the unique opportunity to train on a perinatal inpatient unit and as part of the perinatal outpatient clinic team where she treated pregnant and postpartum women suffering from postpartum depression, postpartum anxiety and OCD, postpartum psychosis, and perinatal-related trauma. She was also a team member of Dialectical Behavior Therapy (DBT)-focused inpatient unit, where she provided individual and group therapy which focused on building skills such as emotion regulation, mindfulness, and relationship effectiveness.


Dr. Goldstein has gained advanced training in CBT from Yeshiva University’s Parnes Clinic where she provided individual therapy for a diverse population with presenting problems such as social anxiety, panic disorder, depression and PTSD.  Her other clinical experiences include externships at SUNY Old Westbury’s Counseling & Psychological Wellness Center, where she treated young adults with depression, anxiety disorders, trauma, and developmental and relationship issues, Zucker Hillside Hospital’s geriatric psychology training program, and SCO Family Services (a residential treatment facility for adolescents).


Education and Research:

Dr. Goldstein earned her B.A. from Yeshiva University’s Stern College with a major in Biology and minor in Psychology. She earned her Psy.D from Ferkauf Graduate School of Psychology at Yeshiva University. 


Dr. Goldstein's both clinical and research interests include challenges in romantic relationships and dating. Her doctoral research focused on navigating transitions that occur in long-term romantic relationships and ways partners cope with decreases in certain emotional experiences such as passion.