Meet the NourishRX team


Ryann Hilton, RD, LDN, CEDRD

Ryann is a graduate of Simmons College with a degree in Nutrition and Dietetics. She is certified by the International Association of Eating Disorder Professionals Foundation (IAEDP) as a Certified Eating Disorders Registered Dietitian (CEDRD) and has over 7000 documented eating disorder patient care hours. She has provided nutrition treatment to individuals in all levels of eating disorder care: outpatient, intensive outpatient, partial hospitalization, residential and inpatient and has previously served as the PHP/IOP dietitian at Walden Behavioral Care, a Boston area eating disorder and psychiatric treatment center. As the Pediatric and Adolescent Outpatient dietitian at Mass General Hospital for Children at North Shore Medical Center she was a member of the multidisciplinary feeding therapy team working closely with occupational therapists and speech and language pathologists to assess the nutritional needs for children with ARFID, ADD/ADHD, dysphagia and growth related concerns.

Credentials: Registered Dietitian (RD), Licensed Dietitian Nutritionist (LDN), Certified Eating Disorder Registered Dietitian (CEDRD)

Education: BS in Nutrition and Dietetics from Simmons College

Professional Affiliations: Academy of Nutrition and Dietetics (AND), Massachusetts Dietetic Association (MDA), Multi-Service Eating Disorder Association (MEDA), International Association of Eating Disorder Professionals Foundation (IAEDP), International Federation for Eating Disorder Dietitians (IFEDD), Nutrition Entrepreneurs Dietetic Practice Group, Behavioral Nutrition Dietetic Practice Group Sports, Cardiovascular and Wellness Nutritionists Dietetic Practice Group.

Community: Ryann is an active speaker in the community, presenting nutrition and wellness information in addition to providing eating disorder education to students and professional organizations. She has worked with local primary and secondary schools and has presented to several college communities. 



Katrina Mancebo, RD, LDN

Katrina is a graduate of the University of New Hampshire with dual degrees in Nutrition and Spanish. In addition to her work at NourishRX, Katrina works as a consultant dietitian in various healthcare settings and also teaches group exercises classes. Katrina’s goal is to empower each of her clients to achieve their nutrition and wellness goals by making small, realistic changes for sustainable results. She is fluent in Spanish and embraces her ability to work with Spanish speaking clients. She is published in a peer-reviewed journal, Nutrition and Clinical Practice and has been a speaker at the Massachusetts Annual Nutrition Conference and Exposition.

Credentials: Registered Dietitian (RD), Licensed Dietitian Nutritionist (LDN)

Education: BS in Nutrition & Dietetics, Spanish from the University of New Hampshire

Professional Affiliations: Executive Board: Massachusetts Academy of Nutrition & Dietetics (MAND) & Northeast MAND, Academy of Nutrition & Dietetics (AND), Nutrition Entrepreneurs Dietetics Practice Group

Community: Katrina offers Workplace Wellness to local businesses, Public Speaking.



Gina Davin, RD, LDN

Gina Davin is a graduate of Rochester Institute of Technology with a degree in Nutrition Management. She is passionate about challenging society’s disordered norms and battling the “diet” culture with intuitive eating and body positivity. Her goal is to support her clients in achieving personal growth through effective counseling and compassionate care. Gina has conducted and presented research exploring the relationship between social media and disordered eating within the college population at the annual New York State Dietetic Association Meeting and Poster Session. In addition to being a part of the NourishRX team, Gina works at Newton-Wellesley Hospital as a Clinical Inpatient Dietitian, seeing patients of all ages with a variety of clinical conditions.

Credentials: Registered Dietitian (RD), Licensed Dietitian Nutritionist (LDN)

Education: BS in Nutrition Management from Rochester Institute of Technology

Professional Affiliations: Academy of Nutrition & Dietetics (AND)



Sydney Bates, MS, RDN, LDN

Sydney is obsessed with helping individuals unearth their inner nutrition wisdom, rediscover the joy in eating, and make peace with food and body. She wholeheartedly believes that health is so much more than what you put in your mouth and how you move your body. She will help you to identify and overcome barriers and vulnerabilities in eating and recover from disordered eating behaviors. She believes that her clients are the experts of their own bodies, and that her job is to help direct you towards a more attuned, intuitive eating pattern that includes balance, variety and enjoyment. She is dedicated to utilizing an evidence-based approach to nutrition that is realistic and flexible with a focus on individual lifestyle and goals. She completed her nutrition coursework and Master’s in Nutrition and Health Promotion at Simmons College and her 50-week supervised practice at the Massachusetts General Hospital. Sydney currently lives in Cambridge and enjoys trying new restaurants with her fiancé, traveling, cooking and baking, mindful movement, and dog watching around the city.

Credentials: Registered Dietitian Nutritionist (RDN), Licensed Dietitian Nutritionist (LDN)

Education: BA in Spanish & Hispanic Studies with Minors in Psychology & Biology from Juniata College, MS in Nutrition & Health Promotion from Simmons College, Certificate in Sports Nutrition from Simmons College

Professional Affiliations: Academy of Nutrition & Dietetics (AND), Eating Disorder Registered Dietitians & Professionals (EDRDPRO)


NourishRX Registered Health Dietitians and Nutrition Counseling in Beverly, Massachusetts

Courtney Guarino, MS

Courtney earned both her bachelor and master's degrees at Simmons College, specializing in nutrition and entrepreneurship. You can usually find Courtney in the NourishRX office taking care of all your insurance, billing and scheduling needs, but she also sees clients for metabolic and functional nutrition testing, helping to support our clients on their paths to balanced, healthy living.

Education: BS in Nutrition & Dietetics from Simmons College, MS in Nutrition & Health Promotion Entrepreneurship from Simmons College

Professional Affiliations: Executive Board: Northeast MAND, Academy of Nutrition & Dietetics (AND), Massachusetts Academy of Nutrition & Dietetics (MAND), Sports, Cardiovascular and Wellness Nutritionists Practice Group, Nutrition Entrepreneurs Practice Group, Dietitians in Integrative and Functional Medicine Practice Group



Let’s get healthy and feel satisfied without the restrictions. Book your visit today!