About Me

Jessica KosciewIcz, MS, RD, LDN (she/her)

I am a registered dietitian, who helps people adapt and change their lifestyle so they can have a happy and healthy relationship with food and their bodies.  I use researched-based nutrition knowledge together with behavioral techniques to help motivate my clients.  Each client is given individualized care with a plan to accommodate their needs and specific challenges.  I work with both adults and adolescents.  My specialties include: eating disorders, disordered/emotional eating, weight management, and chronic disease management and prevention. 

I operate a private practice providing individual nutrition counseling to weight management and eating disorder clients. I served as the Nutrition Program Director at BALANCE Eating Disorder Treatment Center where I developed programs, supervised the nutrition team, facilitated groups and meals, and provided individual counseling. I am invested in providing nutrition services to underserved individuals, such as the trans, non-binary and queer people.  I have presented on treating trans and gender non-conforming clients with eating disorders at the Philadelphia Trans Wellness Conference and the Renfrew Center Foundation Conference.  

I hold a Masters in Nutrition and Dietetics Clinical Nutrition from New York University, and acquired clinical experience in the highly competitive internship program at NewYork-Presbyterian Hospital and during a fellowship in ambulatory oncology.  In 2018 I co-taught a Masters class for registered dietitians entitled Nutrition Counseling Theory and Practice at New York University.

About the Team

Shirin Cox, MS, RD, CDN (she/her)

Shirin is an anti-diet registered dietitian nutritionist and specializes in treating eating disorders and disordered eating. Using an intuitive eating, health at every size approach, Shirin helps her clients heal their relationship with food and their bodies while moving them towards peace with food and body liberation.

Shirin holds a BS in molecular biology and earned her Master of Science degree in Clinical Nutrition from New York University, where she also completed her Dietetic Internship. She has over 10 years of experience working as a clinical dietitian and at different treatment centers including The Renfrew Center and Monte Nido working with adults, adolescents and their families at residential and outpatient levels of care.

Janessa Slatky, RD, CEDS-S (she/her)

Janessa is a dedicated and compassionate certified eating disorder registered dietitian and supervisor with over 15 years of experience in the field. Throughout her career, she has had the privilege of working with individuals struggling with various eating disorders, helping them navigate their journey towards recovery. Over the years, she accumulated a wealth of knowledge and expertise by working at several residential treatment centers. It was during these experiences that she realized her true passion lies in outpatient counseling. She found that by being involved in patients' everyday lives, she could tackle the challenges that arise in the real world and provide them with the necessary tools for sustainable recovery.

With an emphasis on fostering long-term success, Janessa strives to educate clients on the importance of gentle nutrition: a lens that prioritizes body autonomy, self-agency, self-determination, and personal boundaries. Gentle nutrition plays a vital role in the healing process, ensuring that she can provide effective and evidence-based care.

In addition to her professional work, Janessa is an advocate for raising awareness about eating disorders and promoting body positivity. She believes in challenging societal norms and supporting individuals in embracing their unique selves. Through public speaking engagements and community outreach programs, she strives to dismantle stereotypes associated with body image and foster a more inclusive and accepting society. If you are seeking guidance, support, and a non-judgmental space to navigate your eating disorder recovery journey, she is here to walk alongside you. Together, you can work towards a life of balance, nourishment, and liberation from the grips of disordered eating.

Melissa Mann, MS, RD, CDN, LDN (she/her)

Melissa is a registered dietitian who specializes in working with clients with eating disorders, disordered eating, body image issues and those who want an anti-diet approach to nutrition. Her career began at The Mount Sinai Hospital in 2016, where she worked as a Clinical Nutrition Coordinator specializing in oncology. Melissa currently works as the lead dietitian at Monte Nido River Towns, a residential eating disorder treatment center in Irvington, NY. At JAK Nutrition, Melissa works with her clients to promote healthy, positive relationships with food and body. Melissa's approach to nutrition counseling is centered around an all foods fit philosophy. She truly believes that nourishing your body should be personalized, easy, and enjoyable.

Melissa received a Bachelor of Arts in Psychology with a dual minor in nutrition and human services from the University of Delaware. Melissa went on to obtain a Bachelor of Science in Nutrition and complete her dietetic internship at Long Island University Post. She later earned a Masters of Science in Clinical Nutrition from New York University. Melissa is licensed in New York and Florida.