Support & Wellness

Support & Wellness

Nutrition Services

Registered dietitians are experts in food and nutrition who motivate, counsel, and advise patients on what, when, and how much to eat and drink, to achieve specific health-related goals and to lead a healthy lifestyle. Utilizing a multidisciplinary and collaborative approach, dietitians in the Center for Advanced Digestive Care (CADC) at NewYork-Presbyterian/Weill Cornell Medical Center work closely and communicate regularly with other practitioners to identify the nutritional needs of each patient throughout his or her care.

Since many digestive diseases and disorders occur before or during adolescence, our dietitians focus on correcting nutritional deficiencies early to support normal growth and development. Each pediatric patient undergoes a thorough nutritional assessment. Our nutrition team helps guide all patients toward a sound diet and appropriate nutritional therapies to prevent and treat digestive disorders and to support recovery and healing after surgery.

Medical nutrition therapy is provided through both one-on-one visits and group counseling sessions to help address nutritional issues associated with acute and chronic digestive diseases and disorders, the side effects of cancer treatment, and weight management, wound healing, digestive challenges, and anatomical changes associated with surgery. Our registered dietitians often speak at patient education events and support groups.

The CADC offers a range of other short-term support and wellness services at no cost to patients who see a CADC physician. Patients seeking further offerings or additional nutrition counseling can utilize the following NYP resources:

CADC Nutrition Staff

Dr. Alexandra B Rosenstock Alexandra Rosenstock, RD, CDN is a registered dietitian dedicated to the Center for Advanced Digestive Care. Alex's expertise is focused in digestive disorders. Alex graduated from New York University and went on to complete her dietetic internship at Brigham and Women's Hospital in Boston. Prior to joining NYP, Alex provided medical nutrition therapy for liver and kidney transplant, gastrointestinal disorders, hepatobiliary medicine and general surgery patients at NYU Medical Center.
Dr. Lauren Kelly Lauren Kelly, MS, RD, CDN is a registered dietitian providing medical nutrition therapy for the Center for Advanced Digestive Care and GI Metabolic and Bariatric Surgery programs.  Lauren provides medical nutrition therapy to patients challenged by gastrointestinal diseases, surgical recovery, and side effects of cancer treatments. She also counsels patients on weight loss, as well as appropriate nutrition therapy pre- and post-bariatric surgery. Lauren earned a Bachelors in Biopsychology from Loyola University in Baltimore and a Masters in Nutrition from Hunter College. After completing her internship through Northwell Health, Lauren joined NYP as an inpatient dietitian at NewYork-Presbyterian/Columbia University Medical Center before joining the CADC.
Dr. Danielle Staub Danielle Staub, MS, RD, CDN is a registered dietitian specializing in digestive diseases and provides medical nutrition therapy for the Center for Advanced Digestive Care and GI Metabolic and Bariatric Surgery program. Prior to assuming this role, Danielle worked as an RD in digestive diseases at NYP -Columbia University Medical Center. Danielle completed her Dietetic Residency and Masters in Clinical Nutrition at New York University. She has been featured in multiple publications, including a chapter in Obesity Care and Bariatric Surgery, and articles for U.S. News and World ReportWeight Watchers International, and Health Day. Danielle is passionate about helping her patients to structure a well-balanced eating plan while navigating their digestive symptoms. She hopes to be a resource to patients before, during, and after treatment of digestive disorders.
alexis-fissinger-RD.jpg Alexis Fissinger, RD, CDN is a registered dietitian specializing in pediatrics as a provider of medical nutrition therapy for the Center for Advanced Digestive Care. Alexis graduated with a Bachelor of Science in Nutrition and Dietetics from Montclair State University and is completing her Masters Degree in Clinical Nutrition at NYU. She completed both her dietetic internship and post-grad fellowship in pediatrics and obstetrics here at NewYork-Presbyterian. She then went on to further specialize in pediatrics as Clinical Dietitian in acute care pediatrics at NewYork-Presbyterian’s Morgan Stanley Children’s Hospital before accepting her current position with CADC at the Weill Cornell Division of Pediatric Gastroenterology and Nutrition.

Contact us

Nutrition consultations are provided free of charge to patients of Center for Advanced Digestive Care physicians. For adult patients

1-877-902-2232 please contact for an appointment

646-962-3869 For pediatric patients, please contact for an appointment.