Qualifications and Experience

Dr. Leiderman is double board certified in Clinical Psychology and Group Psychology from the American Board of Professional Psychology and a Fellow of the American Academy of Clinical Psychology, the highest credentials of a clinical psychologist. He is a New York State licensed psychologist, is an internationally certified group psychotherapist and a Fellow of the American Group Psychotherapy Association.  Dr. Leiderman received two master’s degrees in Clinical Psychology from Fairleigh Dickinson University (1990) and Yeshiva University (1992) and a doctorate in Clinical Psychology from the Ferkauf Graduate School of Psychology, Yeshiva University (1995). He completed his American Psychological Association accredited clinical internship at New York University Medical Center- Bellevue Hospital Center in New York City (1994-1995).

Dr. Leiderman has a private practice in Westchester county and New York City since 1997. He subspecializes in family, group psychotherapies and neurofeedback. He provides treatment to all age groups with a multitude of mental health and presenting problems. In 2011 he became the director of Neurofeedback & Psychological Services, PC an integrative and contemporary private practice in Purchase, New York.

Previously, he was instrumental in establishing the first bilingual/bicultural mental health treatment program in Westchester County at Saint Vincent Catholic Medical Centers Westchester where he served as the director of the Latino Treatment Services from 1996-2011. He supervised a multidisciplinary team providing outpatient bilingual/bicultural mental health and substance abuse treatment. At Saint Vincent’s Hospital he served as the director of the doctoral psychology externship program for 12 years, coordinated the doctoral students’ yearly clinical training and provided supervision including process groups. Additionally, Dr. Leiderman was the coordinator of the hospital’s Biofeedback/Neurofeedback program. From 1986- 1994 he provided individual, group, couple’s/family bilingual psychotherapies in various hospitals and outpatient mental health centers within the tristate area.

Dr. Leiderman has volunteered on numerous boards of directors for over twenty years. In 2018 he was elected to serve on the Board of Directors of the American Group Psychotherapy Association (AGPA) for a four year term (2018- 2022) which collaborates with the Group Foundation for Advancing Mental Health. He has been the president of the Westchester Group Psychotherapy Society, an affiliate of AGPA since 2011. He served on the Sound Shore Area Mental Hygiene Council, Chairman, Westchester County Department of Community Mental Health, Westchester County, NY (1999- 2011); Community Services Board, Westchester County Department of Community Mental Health, Westchester County, NY (2003- 2011); Congresswoman Nita M. Lowey’s Hispanic Advisory Board, representing the 18th Congressional District of Westchester and Rockland Counties, N.Y., (2003-2011); Westchester County Hispanic Advisory Board (appointment by Westchester County Executive Andrew Spano),  Westchester County, N.Y., (2003-2011); Congresswoman Nita M. Lowey’s Health Care Advisory Committee, representing the 18th Congressional District of Westchester and Rockland Counties, N.Y., (2003-2011); Mental Health News Education, Inc., Board of Directors, New York City, NY (2004-2011).

In 2017 he received the Affiliate Society Assembly Award from AGPA. In 2009, he was honored by the Mental Health News, Inc. for his many years of service as a member of the Board of Directors. He was influential in developing Salud Mental, the organization’s bilingual and bicultural publication which was in circulation for years. In 2009 he was presented the Champion of Children’s award in recognition for his many years of service with Westchester’s children and families from Family Ties of Westchester.

Presentations and Publications

The American Group Psychotherapy Association is a dynamic, thriving community of mental health professionals of all disciplines dedicated to advancing knowledge and research, and providing quality training in group psychotherapy and other group interventions, consultation and direct services nationally and internationally.

The Group Foundation for Advancing Mental Health is a philanthropic organization dedicated to changing lives through therapeutic group work by advancing the most effective and innovative approaches to group therapy education, training, research and community outreach.

The Westchester Group Psychotherapy Society (WGPS) seeks to advance training, research, education, consultation in group psychotherapy. We believe strongly in the efficacy and viability of group therapy as a primary modality of psychological treatment and emotional support. WGPS is enhanced by being an affiliate of the American Group Psychotherapy Association.

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