Rebecca Alcosser (she/her), CEDS, RD, CDN — Owner of Tribeca Nutrition
Rebecca is an anti‑diet Registered Dietitian specializing in eating disorders and performance nutrition for dancers and athletes. A Certified Eating Disorder Specialist, she has worked across multiple levels of care and previously served as the on‑campus Dietitian at Barnard College. Rebecca now leads the nutrition department at American Ballet Theatre and the ABT JKO School, offering education and individualized counseling to pre‑professional dancers. Her approach is weight‑inclusive and all‑foods‑fit, creating a safe, non‑judgmental space for clients to explore their relationship with food. Her pup Ember often joins her in the Tribeca office.

Christina Chagaris, RD
Christina is a Registered Dietitian with extensive experience treating eating disorders at the PHP and IOP levels. Rooted in Intuitive Eating and HAES, she provides compassionate, individualized care. A lifelong dancer trained at Joffrey Ballet School, she understands the unique pressures dancers face and has supported Division I athletes in optimizing performance. Christina helps clients rebuild trust with food and develop a balanced, sustainable mindset.

Sarah Liao, MS, RD
Sarah is a Registered Dietitian with a Master’s in Clinical Nutrition from NYU. She has worked with diverse communities and supported clients in eating disorder recovery through individual counseling, group work, and meal support. Grounded in HAES and intuitive eating, Sarah aims to create a supportive, judgment‑free space where clients can build sustainable habits and a nourishing relationship with food.