Walter Bockting, PhD

Dr. Bockting is an internationally known expert in the assessment and treatment of gender dysphoria as well as in general mental health and psychosocial adjustment of transsexual, transgender, and gender nonconforming children, adolescents, adults, and their families.

Aaron Malark, PsyD

Dr. Malark is a clinical psychologist who works with adolescents and adults. Dr. Malark's clinical and academic interests include the mental health of gay and bisexual men, the coming out process, and the intersection of sexuality and HIV; Dr. Malark also has extensive experience in the treatment of anxiety and depression..

Adam Kozikowski, MS, PMHNP-BC

Adam is a nurse practitioner in psychiatry and an Instructor in Nursing in Psychiatry at CUMC. Adam received his masters from New York University College of Nursing, with clinical training at Bellevue Hospital and New York University. He is board-certified as a psychiatric/mental health nurse practitioner by the American Nurses Credentialing Center. As a psychiatric nurse practitioner, Adam provides psychotherapy and psychiatric medication management services to LGBT adults, as well as education and support to families. Adam is also involved in clinical training for nurse practitioner students through CUMC. Adam’s clinical and academic interests include education for healthcare professionals on mental health for LGBT individuals, substance use in the LGBT community, stigma surrounding mental health and HIV, as well as gender-identity and the coming out process. Adam has experience in Gestalt psychotherapy as well as the treatment of mood and anxiety disorders. He has previously worked providing mental health care for LGBT and underserved populations in community and outpatient settings throughout New York City. 


Primary Clinical Focus: Intersexuality / Disorders of sex development in children, adolescents, and adults; gender variants / gender dysphoria in children and adolescents.


Experienced nurse practitioner, educator, and health care leader with a career focused and dedicated to improving the lives of those living with and affected by HIV, as well as those at-risk of HIV infection. Special interest in health promotion, interprofessional education, and quality improvement.