Background

I received my doctoral degree in clinical psychology in the PGSP-Stanford PsyD Consortium in Palo Alto, California. I completed my APA-accredited pre-doctoral internship at Rutgers University Behavioral Health Care in the child track and my APA-accredited clinical child postdoctoral fellowship at Northwell Health’s Long Island Jewish Medical Center, Zucker Hillside Hospital, with an emphasis in pediatrics. During my postdoctoral fellowship, I trained in the Zucker Hillside’s Child Outpatient Department, in the Northwell Health Physician Partners LGBTQ Transgender Program, and in Cohen Children’s Medical Center’s Hematology, Oncology, and Stem Cell Transplant division. In the Northwell Health Physician Partners LGBTQ Transgender Program, I was privileged to receive specialized training in gender-affirming care in a medical clinic where I provided psychotherapy and co-conducted evaluations for gender-affirming hormone therapy and surgery.

I have been trained in evidenced-based treatments for OCD, anxiety, depression, trauma, and self-harm/suicidality, as well as other more general childhood behavioral challenges in a variety of settings including Kaiser Permanente Medical Center, Rogers Behavioral Health, Stanford University School of Medicine/Lucile Packard Children’s Hospital, Stanford University School of Medicine Pediatric Acute-onset Neuropsychiatric Syndrome (PANS) Clinic, and the Intensive Program for OCD at Bradley Hospital.

Ellerkamp, H. (2022, May). The intersection of gender diversity and autism spectrum disorder, presented at Grand Rounds at Zucker Hillside Hospital. Glen Oaks, NY.

Ellerkamp, H., Thienemann, M. (2020, July). Caregiving coping with PANS/PANDAS. Virtual talk presented at the 27th Annual OCD Conference.

Ellerkamp, H. & Park, J. (2019, March). Cognitive Behavioral Therapy for hoarding behaviors in childhood and adolescence. Talk presented at the Anxiety and Depression Association of America Conference, Chicago, IL.

Ellerkamp, H., Park, J., & Selles, R. (2019, March). Elevating exposure expertise. Workshop presented at the Anxiety and Depression Association of America Conference, Chicago, IL.

Schneider, L., Ellerkamp, H., & Dubin, A. (2019, March). Taking care of yourself. Presented at the annual implantable cardioverter defibrillator event, Connecting, Stanford University, Palo Alto, CA.

Current Professional Memberships

Select Presentations

International OCD Foundation (IOCDF)

Society of Pediatric Psychology (SPP; current secretary of the Gender Health Special Interest Group Leadership Committee)

World Professional Association for Transgender Health (WPATH)

Outside of work, I enjoy spending time with my dog, running, cheering on the New York Liberty, and exploring the city.