Weill Cornell Outpatient Team
Miriam Mahmood, PhD, MS, RD, CDN
Clinical Nutrition Manager
Expertise: clinical nutrition, research, health promotion
Miriam joined NYP in 2023 as the Supervisor and was promoted to the Clinical Nutrition Manager of Outpatient Nutrition and Diabetes Education at the Weill Cornell campus in 2026. She previously worked in both inpatient and outpatient settings as a Clinical Nutrition Manager at NYU Langone Health Orthopedic Hospital, Senior Outpatient Clinical Nutritionist at NYC Health & Hospital/Bellevue and at ArchCare at Terence Cardinal Cooke Health Care Center, New York, NY. Miriam completed a BS and her dietetic internship at City University of New York Hunter College in 2009. She has a MS in Nutrition from Long Island University C.W. Post and PhD in Nutrition and Dietetics from New York University. She is passionate about leveraging clinical nutrition, research and technology to address weight management, diabetes education and health disparities.
Meredith Liss, MA, RD, CDN, CDCES
Advanced Clinical Dietitian and Certified Diabetes Education Specialist
Expertise: adult, infectious diseases
Meredith joined NYP in 1994 after working Terence Cardinal Cooke Healthcare Center. Meredith completed her Dietetic Internship at New York Hospital in 1992. She has an MA in Applied Physiology from Columbia University Teachers College and BS in Nutrition from Penn State University. Meredith is a Certified Diabetes Education Specialist at the Ambulatory Care Network Center for Special Studies. She has extensive experience and is a specialist in the care of patients living with HIV/AIDS including but not limited to diabetes, heart disease, chronic renal disease, obesity/weight management and irritable bowel syndrome. With authenticity and the ability to connect with people, Meredith empowers patients to work towards healthy and sustainable lifestyle changes.
Nancy E. Addison, MPH, RD, CDN, CDCES, CLC
Advanced Clinical Dietitian and Certified Diabetes Education Specialist
Expertise: adult, women’s health, diabetes, gestational diabetes
Nancy joined NYP in 2008 as the Ambulatory Care Network Clinical Nutritionist at the Charles Rangel Practice after working at Maimonides Medical Center and the UNITE Health Center. Nancy transferred to the Weill Cornell campus in 2017 where she works in Ambulatory Care Women’s Health and NYP Outpatient Practices. Nancy completed her Dietetic Internship at Hunter College in New York in 2003. She has an MPH and BS in Dietetics also from Hunter College. Nancy is a Certified Diabetes Education Specialist and Certified Lactation Counselor. She counsels patients with diabetes, through pregnancy (including gestational diabetes), weight management and cardiovascular diseases among other nutrition related problems and for health and well-being.
Jenna Cervantes MS, RD, CDN, CNSC
Advanced Clinical Dietitian
Expertise: ketogenic and related diets - pediatrics and adults
Jenna joined NYP/WCM as an inpatient dietitian in 2008, after relocating from California. When she was promoted to an inpatient clinical nutrition supervisor, she engaged in enterprise-wide initiatives, spearheaded operational enhancements, and served as a mentor for the clinical nutrition team. Jenna completed her dietetic internship at the San Diego VA Healthcare System in 2004 after earning a BS in Nutrition and Food Science from California State University, San Bernardino. She is a Certified Nutrition Support Clinician (CNSC) and has a MS in Information Design and Strategy from Northwestern University. Jenna currently works in the NYP/WCM Pediatric Neurology and the NYP Outpatient Nutrition practices. In addition to her expertise in using the ketogenic diet to treat intractable epilepsy and other disorders, Jenna’s goal is to work closely with patients and families to develop effective dietary therapies customized to the needs of each patient.
Laura Cordella, MS, RD, CDN
Clinical Dietitian
Expertise: adult and adolescent eating disorders
Laura joined NYP in 2016 working as an inpatient dietitian at NewYork Presbyterian Westchester Behavioral Health Center before transferring to her current outpatient role at Westchester Behavioral Health Center in 2022. She completed her dietetic internship at NewYork Presbyterian and a Nutrition Fellowship in behavioral health and eating disorders in 2016. She has a MS in nutrition from the City of New York School of Public Health at Hunter College and BA in Psychology from Loyola University, Baltimore MD. Laura works as an outpatient eating disorder dietitian for NewYork-Presbyterian Westchester Behavioral Health Center. She is passionate about helping people improve their relationships with food and the complex connection between nutrition and mental health.
Cecilia Dalmau, RD, CDN, CSP, CNSC
Advanced Clinical Dietitian
Expertise: pediatric digestive diseases
Cecilia joined NYP in 2022, coming from Kaiser Permanente in Washington DC as a pediatric specialty dietitian. She previously worked at the Children’s Hospital of Los Angeles, CA as an outpatient dietitian, for OptionCare, a Walgreens Infusion Company in Miramar, FL as a nutrition support specialist and for Miami Children’s Hospital, Miami FL as a clinical dietitian. Cecilia completed her dietetic internship at NewYork Presbyterian in 2007. She has a BS in food science and human nutrition from the University of Florida, Gainesville, FL and is a Certified Specialist in Pediatric Nutrition (CSP) and Certified Nutrition Support Clinician (CNSC). Cecilia works at Phyllis and David Komansky Center for Children's Health and provides comprehensive individualized nutrition care and counseling for infant and pediatric patients/families with gastrointestinal disorders. Her patients’ needs include, but are not limited to, food allergies and intolerances, eosinophilic esophagitis (EoE), Crohn’s and ulcerative colitis, celiac disease, gastrostomy dependence, irritable bowel syndrome (IBS), and other functional bowel disorders.
Helena Giaume, RD, CDN
Advanced Clinical Dietitian
Expertise: adult digestive diseases and related weight management
Helena joined NYP in 2025 after working as an inpatient dietitian at NYU Langone Health in Manhattan specializing in liver disease, solid organ transplant, and digestive disorders. She completed her dietetic internship at Yale- New Haven Hospital in New Haven, CT in 2020. Helena has a BS in Nutritional Sciences from The University of Connecticut in Storrs, CT. Helena works at the Center for Advanced Digestive Care providing care for patients with digestive diseases including Total Parenteral Nutrition (TPN) by developing personalized nutrition interventions. She is passionate about helping patients to improve their digestive health in sustainable ways that fit their lifestyles, as well as providing the knowledge and tools they need to achieve their health and wellness goals.
Ayelet Goldhaber MS, RD, CDN, CLC
Advanced Clinical Dietitian
Expertise: pediatric digestive diseases
Ayelet joined NYP in 2022 after working at the Hassenfeld Children’s Hospital Ambulatory Care Center at NYU as well as Kings County Hospital as an inpatient pediatric dietitian. Ayelet completed her Dietetic Internship in 2012 and MS in Nutrition, both at New York University. She has a BS in Nutrition from NYP and is a Certified Lactation Counselor. Ayelet works at Phyllis and David Komansky Center for Children's Health and provides comprehensive individualized nutrition care and counseling for infant and pediatric patients/families with gastrointestinal disorders. Her patients’ needs include, but are not limited to, food allergies and intolerances, eosinophilic esophagitis (EoE), Crohn’s and ulcerative colitis, celiac disease, irritable bowel syndrome (IBS), and other functional bowel disorders.
Stacy Kaminski MS, RD, CDN, CDCES
Advanced Clinical Dietitian
Expertise: adult bariatric surgery
Stacy joined NYP in 2019 after working as an inpatient dietitian at North Shore University Hospital and NYU Langone Hospital, Long Island. Stacy completed her dietetic internship at Northwell Health in 2017. She has a MS in Nutrition from Hunter College and BS in Business Administration from University at Buffalo. Stacy is a Certified Diabetes Care and Education Specialist (CDCES). She works for the Center for Advanced Digestive Care division of GI Metabolic and Bariatric Surgery where she counsels pre- and post-operative bariatric surgery patients on nutritionally sound ways to achieve long lasting weight loss. She also serves as a moderator for the Cornell GI Metabolic & Bariatric Surgery Program’s bi-monthly support group. Through her 1:1 nutrition counseling and support group sessions, Stacy advocates for the adoption of healthful nutrition and lifestyle choices to help reduce the incidence of obesity and other chronic diseases.
Shari Keats, MS, RD, CDN
Advanced Clinical Dietitian
Expertise: adult digestive diseases and related weight management
Shari joined NYP in 2024 after working in private practice and as an inpatient dietitian at Stamford Hospital in Stamford, CT. Prior to becoming a dietitian, she worked in investor relations at financial services firms. Shari completed her dietetic internship at Teachers College, Columbia University, New York NY in 2019 where she also received her MS in Nutrition Education. She received a BA in Economics from Union College, Schenectady, NY. Shari works at the Center for Advanced Digestive Care and provides individualized nutrition counseling for patients with digestive diseases, including celiac disease and functional gastrointestinal disorders. She prioritizes her patient’s needs and helps them develop strategies for improved quality of life.
Felicia Losinno, MS, RD, CDN
Advanced Clinical Dietitian
Expertise: adult bariatric surgery
Felicia joined NYP in 2024 after working as an outpatient dietitian at Northwell Health Ambulatory Health Center in Rego Park, NY. She graduated from Queens College, City of New York with a BS is Dietetics, where she completed her dietetic internship in 2014 and subsequently a MS in Nutrition. Felicia works as a registered dietitian for the Center for Advanced Digestive Care division of GI Metabolic and Bariatric Surgery, providing nutritional counseling for patients in preparation for and after bariatric surgery. She is passionate about helping others and providing patients with the knowledge and tools they need to achieve their health and wellness goals.
Francesca Steiner, RD, CDN, CSO, CDES
Advanced Clinical Dietitian
Expertise: adult and pediatric oncology
Francesca joined NYP in 2018 after working as an oncology dietitian at Holmes Regional Medical Center in Melbourne, Florida. Francesca completed her dietetic internship and BS in Dietetics and Nutrition from Keiser University, in Port Saint Lucie, FL. She is a Board Certified Specialist in Oncology Nutrition and a Certified Diabetes Education Specialist. Francesca works at the Sandra and Edward Meyer Cancer Center and is passionate about providing evidence-based individualized nutrition care to improve health outcomes for patients throughout the cancer care continuum. She is committed to promoting health equity for underprivileged populations.
Kiera McShane RD, CDN
Dietitian/Nutritionist
Expertise: pediatrics - general, adolescent, weight management, disordered eating
Kiera joined NYP in 2025 after working at Elizabeth Seton Children’s Center in Yonkers, NY. She completed her dietetic internship at Viterbo University, La Crosse, WI in 2021 and has a BS in Nutrition and Dietetics from the University of Delaware. Kiera works in the NYP Ambulatory Care Network general pediatric, adolescent, Health for Life and NYP Outpatient Nutrition practices. She combines her strong sense of empathy with creativity to help her patients build a positive relationship with food and their bodies, empowering them to make sustainable, nourishing choices.
Stephanie Roit MS, RD, CDN, CSO
Advanced Clinical Dietitian
Expertise: adult oncology, digestive diseases
Stephanie joined NYP as an inpatient oncology dietitian in 2017 after working as a Clinical Aide at NYU's Student Health Center and Administrator at NYU's Stern School of Business. She transferred to her current position in 2019. She completed her dietetic internship at NewYork-Presbyterian in 2016 and has a MS in Clinical Nutrition and BS in Biology from New York University. She is a Certified Specialist in Oncology Nutrition. Stephanie combines her passions for food and science providing individualized nutrition counseling for patients during their medical, radiation and/or surgical cancer treatment to help them get their best nutrition and maximize their quality of life.
Alexandra Rosenstock, RD, CDN
Advanced Clinical Dietitian
Expertise: adult digestive diseases and related weight management
Alexandra joined NYP in 2014 after working at New York University Medical Center taking care of patients with liver, kidney, gastrointestinal, hepatobiliary disorders. Alexandra completed her dietetic internship at Brigham and Women’s Hospital in Boston in 2010 and BS in Nutrition at New York University.Alexandra works at the Center for Advanced Digestive Care and provides comprehensive individualized nutrition care for patients with digestive diseases using an integrative approach in close collaboration with GI doctors. She is passionate about helping patients with complex functional digestive disorders improve their health and wellbeing.
Anita Sarin, MS, RD, CDN, CSO
Advanced Clinical Dietitian
Expertise: adult oncology
Anita joined NYP in 2023 after working as an inpatient dietitian at Memorial Sloan Kettering Cancer Center and NYU Langone Hospital Brooklyn, both in New York City. She completed a MS in nutrition and dietetic internship at the University of Illinois at Chicago (UIC) in 2017. Anita has a BA in applied psychology also from UIC. She provides individualized nutrition care for patients with breast and gynecology related cancers and for patients in the survivorship program. Anita is passionate about providing patients with the tools and information to improve their health and quality of life.
Ava Greco, RD, MS, CDN
Dietitian/Nutritionist
Expertise: adult digestive diseases and related weight management
Ava joined NYP in 2026 after working at Montefiore Medical Center, Bronx NY as an inpatient dietitian and as a nutrition research and virtual assistant at Biomedical Healing for Kids. She completed her dietetic internship and MS in nutrition at Boston University in 2024 and has a BS in nutritional science from Pennsylvania State University, State College PA. Ava works in the Center for Advanced Digestive Care where she provides medical nutrition therapy to patients with a wide variety of digestive disorders, including weight management, in close collaboration with the medical team to help improve GI symptoms and provide individualized support .
Sabrina Ian Lok Song, MS, RD, CDN
Dietitian/Nutritionist
Expertise: pediatrics - general and digestive diseases
Sabrina joined NewYork-Presbyterian in 2025 after working as an inpatient dietitian at NYC Health + Hospitals/Bellevue and providing outpatient nutrition counseling in private practice. She also brings pediatric nutrition experience from St. Mary’s Hospital for Children.
Sabrina completed her dietetic internship at Columbia University Teachers College, NY in 2022, where she also earned a MS in Nutrition and Education. She holds a BS in Food Science from the Pennsylvania State University, State College PA.
Sabrina works in the NYP Ambulatory Care Network general pediatrics and NYP Outpatient Nutrition practices and at the Phyllis and David Komansky Center for Children’s Health. She provides individualized nutrition care and counseling for infants and children with gastrointestinal disorders and other pediatric conditions. Sabrina is dedicated to empowering families with practical nutrition strategies that support children’s growth, development, and lifelong healthy habits.
Melissa Stoffels, MS, RD, CDN
Advanced Clinical Dietitian
Expertise: adult digestive diseases, Inflammatory Bowel Disease (IBD)
Melissa joined NYP in 2023 after working as an inpatient dietitian at NYU Langone Health in New York City. She completed her dietetic internship at NewYork-Presbyterian in 2020. Melissa has an MS in Nutrition from Montclair State University and a BA in Communication from Monmouth University, both in New Jersey. Melissa works at the Center for Advanced Digestive Care providing care for patients with digestive diseases including but not limited to celiac and inflammatory bowel (IBD) diseases. She develops personalized nutrition interventions and is committed to helping patients to improve their digestive health in sustainable ways that fit their lifestyles.
Katrina Trisko, MS, RD, CDN
Advanced Clinical Dietitian
Expertise: adult diabetes, weight management, heart health, health and wellbeing
Katrina joined NYP in 2023 after working for the New York Nutrition Group and Bethany Medical Clinic providing outpatient clinical nutrition services. She also worked at Heritage Health and Housing in New York as the program coordinator, providing education and nutrition services to individuals with HIV/AIDS. Katrina completed her dietetic internship and MS in Nutrition and Exercise Physiology at Teachers College, Columbia University in 2016. She has BS in Nutritional Sciences from Boston University. Katrina works in the NYP Outpatient Nutrition Practice where she provides individualized medical nutrition therapy, and empowers her patients to make positive, nourishing food choices that will improve their health, both physically and mentally.
Jaimie Uva, RD, CDN
Advanced Clinical Dietitian and Certified Diabetes Education Specialist
Expertise: adult, infectious diseases
Jaimie joined NYP in 2001 after working at The Rockefeller University Hospital. Jaimie completed her Dietetic Internship at NewYork Presbyterian in 2001 and has a BS in Clinical Nutrition from New York University. She works at the Ambulatory Care Network Chelsea Center for Special Studies with a dynamic interdisciplinary team caring for patients with HIV/AIDS and in prevention and wellness with the LGBTQAI community. Jaimie's experience, knowledge and enthusiasm are pillars for collaboration with her patients in a highly personalized approach to care. She believes healthy eating is essential for mental and physical well-being.
Laurel Lorenzo BA
Billing and Scheduling Liaison
Laurel joined NYP in 2014 as a Registrar and was promoted to a Billing and Scheduling Liaison in 2019. Laurel previously worked as a cashier at Key Food Supermarkets and customer service representative for a summer youth employment program. She graduated from Mercy College on honor roll with a BA in Psychology. Laurel coordinates all aspects of patient access to nutrition and diabetes self-management education services including supporting patients connect to their MyChart portal, schedule appointments and verifying their insurance coverage. She is passionate about providing excellent customer service and is bilingual in English and Spanish.