Treating Mind and Spirit as One

2023 Summer Certificate Program – Teachers

2023 Summer VIRTUAL 18-CEC Certificate Program

Spiritually-Informed Psychotherapies


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2023 Teachers will be announced soon

Our interdisciplinary and multifaith faculty includes instructors who are expert in their various fields



PSI is recognized by the NYS Ed. Dept. Office of Professions:  Provider #SW-0252 /#MFT-0044/#MHC-0081/#CAT-0076

  A printable flyer for this program is available here


Previous PSI Instructors:

Paul Kelly, MA, LMHC, CSAT

Paul Kelly is a licensed psychotherapist practicing in New York City. He has worked with recovering sex addicts for 25 years. He has trained with the leading figures in the field of sex addiction including Patrick Carnes (Out of the Shadows, Don’t Call It Love, The Betrayal Bond), Stefanie Carnes, (Mending a Shattered Heart), Ken Adams (Silently Seduced), Alex Katehakis (Erotic Intelligence), Rob Weiss (Cruise Control), and others. From 2013-2016 he served as Primary Therapist at New York Pathways where he treated both addicts and their partners, and where he designed and developed their Personalized Intensives Program as well as their Gay Men’s program. He is a member of the International Institute of Trauma Professionals (IITAP) as well as the Society for the Advancement of Sexual Health (SASH) and a member of the New York Mental Health Counselors Association (NYMHCA).


The Rev. Sarah McCaslin, MDiv, LMSW

Rev. Sarah Segal McCaslin, MDiv, LCSW (she/her) is the Executive Director of the Psychotherapy and Spirituality Institute.  She also maintains a clinical practice at PSI, providing counseling to individuals, couples, and families, as well as consultation services and leadership workshops for faith communities and other organizations.  She is a licensed clinical social worker and an ordained Presbyterian minister, with an MSW in Advanced Clinical Practice from Columbia University, MDiv from Union Theological Seminary, and post-graduate certificate in family therapy from the Ackerman Institute for the Family.  Sarah is devoted to fostering the human capacity for resilience, growth and meaning-making, even under the most daunting circumstances.  She believes in the inherent spirituality of all people to be a resource for achieving healing and wholeness.


Souha Frewat-Nikowitz, PhD

Souha Frewat-Nikowitz is a New York State licensed clinical psychologist working in the multilingual private practice of psychology since 2001. She was born in Beirut, Lebanon and lived in Austria and France before immigrating to the United States thirty years ago. She has earned an M.A. in psychology from New York University, and a Ph.D. in clinical psychology from the New School for Social Research. Before becoming a psychologist Dr. Nikowitz earned a degree in translation and comparative linguistics from Karl-Franzens University in Graz, Austria. Her clinical psychology internship, her fellowship, as well as her dissertation project were at Beth Israel Medical Center, New York. She has also worked at several New York Hospitals, including Woodhull Medical Center in Brooklyn and Metropolitan Hospital in Manhattan. Since she has completed her degree, she has been working with a variety of immigrant and refugee populations in NYC from within and outside community based organizations in matters ranging from acculturation issues, depression, anxiety, and trauma related conditions. Dr. Nikowitz was part of a task force to help build a mental health initiative for Arab-Americans post 9/11 by coordinating efforts with local hospitals, clergy, community leaders and law enforcement. Dr. Nikowitz has dedicated most of her career to increasing awareness of mental health issues in the Arab community through psycho-education, and increasing the public’s and clinicians cultural sensitivity towards people from the Middle East.