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..


Roshnee Barrett, PhD

Dr. Barrett is a licensed psychologist and Assistant Professor of Medical Psychology with the Program for the Study of LGBT Health. Dr. Barrett received her doctorate from Teachers College, Columbia University and completed clinical training at St. Luke's-Roosevelt Hospital Center. Dr. Barrett works with LGBT adults and their families to help facilitate and provide culturally competent and appropriate mental health services. Dr. Barrett's clinical and academic interests include the impact of discrimination on mental health; intersectional multicultural competency; socialization around gender roles; women's mental health; Latino/a mental health; sexual violence and trauma; and substance abuse/misuse. Dr. Barrett has extensive training in psychodynamic therapy, as well as familiarity with behavioral therapies including dialectical behavioral therapy and cognitive behavioral therapy. Dr. Barrett is bilingual and provides treatment in both English and Spanish.


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. 


HEINO F. MEYER-BAHLBURG, PH.D.

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


Jeffrey Kwong DNP, MPH, ANP-BC, ACRN, AAHIVS

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.


Sigrid Gabler, Ph.D., R.N.

A nurse practitioner for the Elder LGBT Interprofessional Collaborative Care Program (e-linc), Dr. Gabler specializes in health promotion and wellness, care coordination for LGBT older adults, and provision of LGBT-culturally appropriate and clinically competent primary care,