InnerMost

Dr. Casey Paleos is a board-certified psychiatrist and researcher with over 15 years of experience in interventional psychiatry. He has offered ketamine therapy through his private practice since 2016. He has trained hundreds of established and aspiring therapists on the subject of ketamine-assisted therapy.

Amanda is a board-certified psychiatric nurse practitioner with 17 years of clinical experience in hospital-based acute and emergency behavioral health. Her style has always been to approach her patients first from a place of compassion, humanistic regard, and intrinsic empathy. In 2019, Amanda had an instrumental role in pioneering, designing, and operating the ketamine infusion service for psychiatric inpatients at New York-Presbyterian Hospital / Weill Cornell Medical Center. Inspired by the potential of ketamine to catalyze deep healing, she shifted her primary focus to working with this medicine in an outpatient setting. Amanda joins InnerMost as Clinical Nurse Manager.

Daniel Tisman is a psychotherapist, group facilitator, and clinical supervisor with a deep commitment to ethical, transformative care. He is a Qualified Gestalt Therapist and has been on faculty at the Gestalt Center for Psychotherapy and Training for over 15 years. Dan brings together decades of experience in trauma-informed psychotherapy, Gestalt practice, and non-ordinary states of consciousness. He is helping to shape Innermost’s vision, guide clinical training, and facilitate Ketamine-Assisted Psychotherapy (KAP) groups rooted in self-compassion, inner inquiry, and integration. Daniel is also trained in IFS and is a KAP trained therapist through the Ketamine Training Center in a special KAP/IFS training with Phil Wolfson and Richard Schwartz. His approach blends intuitive presence with rigorous therapeutic grounding, creating space for healing that is both expansive and deeply personal. Dan’s leadership is shaped by his own long-standing contemplative practice and embodied wisdom traditions such as Qi Gong, yoga, and breathwork. He is especially passionate about supporting therapists as they deepen their capacity to hold space with nuance, integrity, and relational attunement. At Innermost, Dan is helping to shape a clinic that honors each person’s unfolding—where science, soul, and community meet in service of healing.

Dr. William Berk is an ER doctor, assistant professor of medicine, researcher & guide, sound meditation & breathwork facilitator, and a spiritual seeker based in New York City. Dr. Berk is deeply fascinated by the intersection of community, joy, altered states of consciousness, and healing. His work blends meditative, holistic, and evidence-based practices to foster profound connection to the collective human experience. Dr. William Berk holds certifications from Fluence, IFS Institute, International Practitioners of Holistic Medicine, OSHO International, and Embodied Masculine. He currently practices elements of Kriya, Hatha, and Kundalini yoga, OSHO Active Meditations, sound meditation, Vipassana Meditation and Buddhism, and more.