To contact Courtney call 1 (631) 472-2629 or email her at
Courtney Costello, LCSW is a Licensed Clinical Social Worker who earned her degree from Adelphi University School of Social Work. She has experience working with children, teens, and adults in a community and school based settings. In addition to her work with Great South Bay Therapy, Courtney works in a special education high school supporting students with anxiety disorders, depression, substance use, previous traumas, adjustment disorders, and many other life stressors.
Courtney is also a registered yoga teacher which guides her therapeutic practice utilizing breathing techniques and mindfulness as well as other evidenced based stress reduction modalities. Courntey’s approach includes Integrative Health practices, Cognitive Behavior Therapy, and Positive Psychology. She has found a passion in connecting all parts of our being and holistic health in order to be our healthiest and happiest selves.