Our Staff

Jonathan Sinowitz, Psy.D.

Jonathan Sinowitz, Psy.D. is a licensed psychologist trained at New York University, where he obtained his Doctoral degree in Clinical and Child/School Psychology. Since obtaining his doctorate in 1996, Dr. Sinowitz has developed specialties working with forensic matters, child and adolescent evaluation and treatment, and applied psychological testing. Dr. Sinowitz has been conducting comprehensive psychological, neuropsychological, personality and vocational evaluations for the past twenty years, applied to educational, forensic and corporate environments. He is a qualified expert witness and is called upon for expert testimony routinely.

Prior to developing his private practice, Dr. Sinowitz was responsible for establishing the court assessment program at Family Service of Westchester, where he also served as the clinic director and chief psychologist.

Dr. Sinowitz has been practicing independently for more than fifteen years. He consults with private and public schools, corporations and government agencies regularly and he maintains a full-time treatment and evaluation practice with children, adolescents and adults. Dr. Sinowitz founded Diagnostics in 2008, as an expansion of his practice.

Allison Bell, Psy.D.

Allison Bell, Psy.D

Allison Bell, Psy.D. holds a doctoral degree in Clinical Psychology from Yeshiva University. She also holds a Master’s degree in dance/movement therapy from Hunter College. She has been in private practice in Westchester County, N.Y. since 1987, and is specialty-trained in child psychology, neuropsychological evaluation of children and marital therapy. For the past eleven years, Dr. Bell has performed forensic evaluations in both Family and Supreme Courts in the southern New York State region. Dr. Bell is certified to practice EMDR, a specific technique for use with victims of trauma, and performed critical incident stress debriefings for victims of 9/11 in and around New York City. In her 20+ years of clinical practice, Dr. Bell has lectured widely throughout Westchester County, has made television and radio appearances, and has advocated for children with special educational needs.

Currently, Dr. Bell is a member of three interdisciplinary teams practicing Collaborative Divorce, in Dutchess, Westchester and Putnam Counties. She has completed the Program for Senior Executives at the Harvard Program on Negotiation and is a trained Mediator. She is a founding member of the New York Chapter of the Association of Family and Conciliation Courts, and a charter member of the new Forensic Division of the New York State Psychological Association. Dr. Bell has made television appearances on local cable access networks, and appeared on the CBS Early Show in August of 2007.

Christopher DAmato, Psy.D. MPA

Christopher DAmato, Psy.D. MPA

Christopher D’Amato, Psy.D, MPA is a licensed psychologist and board eligible clinical neuropsychologist.  He received his doctoral training at Forest Institute for Professional Psychology in Springfield, MO.  He completed his pre-doctoral intenship at the VA Black Hills in Ft. Meade SD, and a formal, two-year postdoctoral fellowship in clinical neuropsychology at Lemuel Shattuck/Bournewood Hospitals with weekly didactic seminars at Harvard Medical School, Department of Psychiatry in Boston, MA.  Dr. D’Amato has held full-time positions at the Syracuse, NY Veterans Administration and at SUNY Downstate Medical Center in the Department of Orthopaedic Surgery and Rehabilitation.

Currently, Dr. D’Amato provides outpatient and inpatient neuropsychological assessment services at the VA Hudson Valley Health Care System, where he also functions as the pre-doctoral internship assessment training director.  Additionally, Dr. D’Amato serves as an Adjunct Associate Profesor at New York Medical College in the Department of Psychiatry and Behavioral Sciences.

Dr. D’Amato’s specialties include the evaluation of stroke (cerebrovascular disease), traumatic brain injury (TBI), Post Traumatic Stress Disorder (PTSD), dementias, geriatric assessment, tumor, alcohol and drug related encephalopathies, adult ADHD, learning disabilties, and neuropsychiatric conditions.

Marium Zafar, Psy.D.

Marium Zafar, Psy.D.

Marium Zafar, Psy.D. is a licensed clinical psychologist who has been practicing in New York City since 2011. She received her Doctorate of Psychology at Wright State University, where her dissertation focused on increasing awareness of mental health issues in South Asians. Dr. Zafar completed her internship at Wright State University and Dayton Children’s Hospital in Dayton, Ohio. She completed a two year postdoctoral fellowship in pain management at Cincinnati Children’s Hospital Medical Center.  

Dr. Zafar has worked in multiple settings with a diverse patient population and she has extensive experience treating a variety of clinical symptoms. Dr. Zafar values the therapeutic relationship as an integral component of change that often comes from individuals gaining insight into their lives, their relationships and how they view themselves and the world. She implements a cognitive-behavioral and interpersonal framework for therapy, while remaining flexible with this approach and treating people within their cultural context.

Deborah Jaspen, Ph.D.

Deborah Jaspen is a New York State licensed psychologist and certified school psychologist. She received her Ph.D. from The City University of New York, Graduate School and University Center, her M.S.Ed. from CUNY Queens College, and her M.A. from Teachers College, Columbia University. She completed her post-doctoral training at the New York State Psychiatric Institute, Columbia University and has completed additional training at the Ackerman Institute for the Family.

Dr. Jaspen has training and experience conducting therapy with children, adolescents, and adults and with individuals, couples, and families in multiple settings. She also has an extensive background in psychological assessment. Dr. Jaspen takes an eclectic approach to therapy, focusing on cognitive-behavioral techniques with an emphasis on the importance of the therapeutic relationship.

Dr. Jaspen previously worked for the Columbia University Department of Psychiatry and in disability services at the College Board. In addition to her practice at Diagnostics, she works as a psychologist for the Yonkers Public Schools.

Jessica Pearson, Psy.D.

Jessica Pearson, Psy.D. is a licensed clinical psychologist. She received her Doctorate of Psychology from Yeshiva University in 2003. Dr. Pearson completed her pre-doctoral internship at Bellevue Hospital Center/NYU School of Medicine, after which she continued at the hospital to complete a post-doctoral fellowship in forensic and clinical psychology. Subsequent to her fellowship, Dr. Pearson served as a clinical psychologist for five years on the Inpatient Forensic Psychiatry Service at Bellevue Hospital, evaluating and treating male forensic psychiatric patients. She currently serves as a clinical psychologist at Elmhurst Hospital Center/Mount Sinai School of Medicine on the Women’s Forensic Unit, evaluating and treating female forensic psychiatric patients.

Dr. Pearson has extensive experience with psychological testing and forensic assessment. She conducts court ordered evaluations around issues of competency to stand trial. She also specializes in pre-pleading/pre-sentencing mitigation evaluations; evaluation of mental state at the time of offense; and evaluation of psychological damages in civil cases.

Joanna Oleson, Psy.D.

Joanna Oleson, Psy.D.

Joanna Oleson, Psy.D. obtained her Doctoral degree in clinical psychology at Nova Southeastern University and is licensed in New York State. She holds a Masters degree from Scranton University focusing on health psychology, personal growth, and stress management. Dr. Oleson completed a two-year program of Hakomi Therapy, a body centered psychotherapeutic approach utilizing mindfulness to deepen awareness of the body’s ability to hold and reveal emotions. She has also completed two years of analytic training at the Institute for Psychoanalytic Study of Subjectivity in New York City. Dr. Oleson is exploring ways of integrating mindfulness, personal growth, and relation to others into clinical psychotherapy.

Dr. Oleson has a depth of experience working with individuals, couples and families with a range of clinical concerns. She worked with children and families at Astor Services for Children in Poughkeepsie, NY and at Good Shepherd Services in Bronx, NY. She has worked with students in several college counseling clinics;, with veterans on the PTSD Unit at the Montrose VA; with seniors in nursing home facilities; and with adults and families in a community mental health center. She has more than ten years experience working with clients dealing with trauma, loss, anxiety, depression, adjustment issues and psychosis.

Sarah Stern, Ph.D.

Sarah Stern, Ph.D.

Sarah Stern, Ph.D. is a doctoral level psychologist who conducts psychotherapy and evaluations at Diagnostics, LLP. She has experience conducting psychoeducational, psychological and OMRDD evaluations with children and adults. Dr. Stern believes the foundation for successful therapy lies in the development and maintenance of an authentic, open and empathic therapeutic relationship. It is through this client-therapist relationship that successful exploration and understanding of relational and affective themes, and maladaptive behaviors and thought patterns can take place with the goal of increasing self-awareness and leading to fuller, happier lives.

Previously, Dr. Stern served as a Psychology Intern at Beth Israel Medical Center in Manhattan. She completed year-long trainings at Bellevue Hospital Center, Fordham University Counseling and Psychological Services, North Central Bronx Hospital, Public School 116, and the Association for the Help of Retarded Children.

Dr. Stern received her Bachelor of Science in Human Development from Cornell University. She attained her Master’s Degree in Counseling and Personnel Services and her Ph.D. in Counseling Psychology from Fordham University. Dr. Stern’s doctoral dissertation explored the impact of parents’ confidence in their ability to cope with stress on the academic achievement of racial and ethnic minority youth. Her dissertation can be found in Dissertation Abstracts International.

Liliana Raez, LP

Liliana Ràez is a licensed psychologist and psychoanalyst. She trained at the Peruvian University, UNIFE, where she obtained her degree in Clinical Psychology. Since obtaining her degree in 1996, Dr. Raèz has developed specialties working with immigration matters, child and adolescent evaluation and psychoanalytic treatment. She has conducted programs with mothers and children at day care centers and schools for many years.

Prior to developing her practice, Dr. Raez was responsible for running child and adolescent programs and family therapy in schools and colleges in Peru. There, she also served as the clinic director and chief psychologist of a number of school and daycare programs. Dr. Ràez has been practicing independently for more than 15 years. She consults with private and public schools, and corporations, and she maintains a full-time treatment and evaluation practice with children, adolescents and adults.

Dr. Ràez has published a number of articles regarding clinical treatment and she published a book in 2019.

Emily DAntonio, Ph.D.

Emily DAntonio, Ph.D.

Emily D’Antonio, Ph.D. is a licensed clinical psychologist. She received her Master’s in Counseling Psychology from Fordham University and her Doctorate in Clinical and School Psychology from Hofstra University.  Her dissertation focus was on depression and cognitive deficits in indivisuals with severe mental illness.

Dr. D’Antonio completed her APA approved internship at Pilgrim Psychiatric Center. She completed a two-year postdoctoral fellowship in neuropsychology at Mount Sinai Medical Center, where she worked with adolescents and adults with traumatic brain injuries. Dr. D’Antonio has published several research papers on topics including depression, schizophrenia, developmental disabilities, and cultural issues in psychiatric diagnosis.

Dr. D’Antonio has worked with a wide variety of patients, incluing children, adolescents and adults.  She employs a cognitive behavioral approach to psychotherapy and has experience working with individuals with depression, anxiety, trauma, psychosis, relational issues, and other problems.  Dr. D’Antonio maintains specialties in neuropsychological assessment, traumatic brain injury, and cognitive remediation.

Jonathan Fiskus, Psy.D.

Dr. Jonathan Fiskus is a licensed psychologist. He was trained at Hofstra University with a specialty in School-Community Psychology. Dr. Fiskus received clinical training at Hofstra’s PERC Clinic as well as Interborough Developmental and Consultation Center in Brooklyn. Dr. Fiskus received further training working with the team at Great Neck’s prestigious North Middle School. He has extensive experience working with individuals with learning, intellectual, and developmental challenges, having served as a school psychologist for the National Jewish Council for Disabilities/Yachad for many years.

Dr. Fiskus employs CBT techniques and strategies in pychotherapy as a means to help, educate, and guide each patient towards attaining effective and meaningful treatment. To that end, Dr. Fiskus emphasizes the development of a strong relationship, rapport and trust with his patients. Dr. Fiskus also specializes in psychological and neuropsychological assessment.

Nicole Andreoli, Ph.D.

Nicole Andreoi, Ph.D.

Nicole Andreoli, PhD received her doctorate in Applied Psychology and a postdoctoral respecialization degree in Clinical Psychology from Hofstra University.

As a licensed clinical psychologist, Dr. Andreoli works primarily from a cognitive behavioral framework. She has experience working with children, adolescents, and adults to address a wide range of social, emotional, and behavioral issues. Her specialities include, but are not limited to, anxiety and depression management, relationship concerns, and transitional issues.

Dr. Andreoli has an extensive background in psychological assessment. She has conducted psychological and neuropsychological evaluations at Hofstra University’s Saltzman Center, Long Island Jewish Hospital’s Nerken Center for Research, as well as in private practice. Additionally, she has conducted fitness for duty evaluations for Viacom/MTV/VH1, the Suffolk County Police Department, and as a consultant with R3 Continuum.

Dr. Andreoli has previously been an Assistant Adjunct Professor of Psychology at Hofstra University and Mercy College.