- Clinical Nutrition Services
- Meet the Team
- Clinical Nutrition Services
- Meet the Team
Dietitians

Sydney Antolini MS, RD, LD, CSPCC
- Clinical Dietitian, Specialist II
Sydney Antolini MS, RD, LD, CSPCC
Locations
Languages
- English
Departments
Biography
- Sydney Antolini, M.S., R.D., L.D., C.S.P.C.C., is a pediatric clinical dietitian in the Neonatal Intensive Care Unit (NICU) at Children's National Hospital. She completed her undergraduate degree in dietetics at the University of Dayton. She went on to earn her master's degree in nutrition and complete her dietitian internship through the University of Mississippi's coordinated program with an emphasis on pediatric nutrition. She is an involved member of Academy of Nutrition and Dietetics (AND) and Pediatric Nutrition Practice Group. She is a board-certified specialist in Pediatric Critical Care (CSPCC).

Blasine Besore M.S., R.D.
- Clinical Dietitian
Blasine Besore M.S., R.D.
Locations
Languages
- English
Departments
Biography
Blasine Besore, M.S., R.D., is an inpatient pediatric dietitian at Children’s National Hospital who currently specializes in hematology and oncology. She earned her Bachelor of Science in Dietetics from the University of Florida in 2019 then went on to complete a combined Master of Science in Clinical Nutrition and Dietetic Internship program from Rush University in 2021. She is a member of the Academy of Nutrition and Dietetics (AND) and the Pediatric Nutrition Practice Group.

Sydney Blakeslee MS, RD
- Clinical Dietitian, Specialist I
Sydney Blakeslee MS, RD
Locations
Languages
- English
Departments
Biography
Sydney Blakeslee, M.S., R.D., is a clinical dietitian at Children’s National Hospital. She completed a five-year combined bachelor and master of science program at D’Youville College in Buffalo, NY. Sydney obtained her B.S.+M.S., degree in dietetics in May of 2019. She became a registered dietitian in July of 2019. Sydney started her career at Children’s National in September 2019. Currently, she is the full-time outpatient clinical dietitian.
Her interests lie in pediatric weight management and promoting optimal nutritional health. She is currently a member of the Academy of Nutrition and Dietetics (AND). Sydney hopes to one day be a board-certified specialist in pediatric nutrition, and also certified in childhood and adolescent weight management. She looks forward to continuing and expanding her knowledge in all areas of pediatric nutrition.

Christy Bock MS, RDN, CSOWM, LDN/LD
- Lead Outpatient Dietitian, Expert
Christy Bock MS, RDN, CSOWM, LDN/LD
Locations
Languages
- English
Departments
Biography
Christy Bock, M.S., R.D., L.D.N., is an outpatient pediatric dietitian committed to uplifting families and children to achieve their health goals in the multidisciplinary Improving Diet, Energy and Activity of Life (IDEAL) Weight Management Clinic and the surgical bariatric nutrition program. She is board certified as an interdisciplinary specialist in obesity and weight management by the Commission on Dietetic Registration. She is an experienced pediatric dietitian in private practice, federally qualified healthcare centers, and large-scale hospital systems.

Suzanne Bruels MPH, RD, LD
- Clinical Dietitian, Expert
Suzanne Bruels MPH, RD, LD
Locations
Languages
- English
Departments
Biography
Suzanne (aka Suzie) Bruels, M.P.H., R.D., L.D., is an outpatient dietitian working at Children’s National in the Special Immunology clinic working with patients who are living with HIV. She completed her bachelor's degree in food science and nutrition from Central Washington University in Ellensburg, Wa and her dietetic internship at Oregon Health and Science University in Portland, Or. Suzie has a diverse background of work experiences including working as a WIC dietitian and lactation counselor, serving as a Peace Corps volunteer, working with patients living with HIV and five years of overseeing a community kitchen that makes meals from scratch for kids and seniors in need. Recently, Suzie received her Master of Public Health degree from Johns Hopkins Bloomberg School of Public Health.

Abriana Cain MS, RD, LD
- Clinical Dietitian
Abriana Cain MS, RD, LD
Locations
Languages
- English
Departments
Biography
Abriana Cain, M.S., R.D., L.D. is an outpatient pediatric dietitian at Children’s National Hospital who currently specializes in gastroenterology. She completed a five-year combined Bachelor and Master of Science program at The Pennsylvania State University in 2022 and then went on to complete a dietetic internship at the National Institutes of Health (NIH) which included a rotation at Children’s National Rare Disease Institute in 2023. She is currently a member of the Academy of Nutrition and Dietetics (AND).

Jessica Cavall MS, RD
- Clinical Dietitian, Specialist II
Jessica Cavall MS, RD
Locations
Languages
- English
Departments
Biography
- Jessica Cavall, M.S., R.D., currently works as an outpatient dietitian specializing in hematology, oncology, and stem cell transplant. She earned her undergraduate degree as a double major in Communication and Spanish from Rutgers University, her Master of Science in Clinical Nutrition from New York University, and completed her dietetic internship at Virginia Commonwealth University. Her experience includes pediatric oncology and transplant both inpatient and outpatient settings as well as critical care. She is an active member of the Academy of Nutrition (AND) subgroups for both oncology and pediatrics.

Kathryn Cosco RD
- Clinical Dietitian, Specialist I
Kathryn Cosco RD
Languages
- English
Departments
Biography
Katie Cosco, R.D., is an inpatient dietitian at Children’s National Hospital. She earned her bachelors of science in nutrition from Syracuse University in 2018 and went on to complete her dietetic internship through the Virginia/Maryland WIC Program. Prior to working at Children’s National, Katie worked with many mothers and families as a dietitian with the Virginia WIC program. Her most recent experience has been working with a wide variety of patients in the acute-care setting. She is an active member of the Academy of Nutrition and Dietetics.

Sarah Davis RD, CNSC, CSP, LD
- Clinical Dietitian, Expert
Sarah Davis RD, CNSC, CSP, LD
Locations
Languages
- English
Departments
Biography
Sarah Davis, R.D., C.N.S.C., C.S.P., L.D., completed undergraduate training at Missouri State University with a degree in Health Sciences and Nutrition and later completed her didactic requirements at Fontbonne University. Sarah completed her Dietetics Internship at St. Louis University. After completing her dietetic internship at St. Louis University, Sarah started her career with the adult cardiac population at Barnes Jewish Hospital in St. Louis. In 2012, she moved to the Washington, D.C., area and began working in general pediatrics and gastroenterology at Children’s National. She transitioned back to the cardiac population in 2014 and has found her passion working in the cardiac ICU. She has a special interest in the single ventricle population and is the primary RD for the home monitoring program as well as a member of the feeding work group with NPC-QIC (National Pediatric Cardiology Quality Improvement Collaborative). She is also a member of the PCICS (Pediatric Cardiac Intensive Care Society) nutrition group.

Ellen Druebbisch MPH, RDN
- Clinical Dietitian
Ellen Druebbisch MPH, RDN
Locations
Languages
- English
Departments
Biography
- Ellen Druebbisch, M.P.H, R.D.N., is a staff relief dietitian at Children’s National Hospital. She earned her B.S. in Biomedical Science at the University of Lynchburg in 2021. She then completed a coordinated program at the University of North Carolina at Chapel Hill and earned her Master of Public Health in Nutrition and Dietetics in 2023.

Emily Frymark MS, RD, LD
- Clinical Dietitian
Emily Frymark MS, RD, LD
Locations
Languages
- English
Departments
Biography
Emily Frymark, M.S., R.D.N., L.D.N., works with the Endocrinology and Diabetes team for Children’s National Medical Center. She earned both her Bachelor of Science in Food and Nutrition (2015) and her Master of Science in Rural Nutrition (2021) with Appalachian State University in Boone, NC. She completed her Dietetic internship in conjunction with her Master’s degree in Raleigh, NC. Prior to working with CNMC, Emily worked in an outpatient eating disorder clinic with focus on Intuitive Eating and Health at Every Size. She is currently a member of the Academy of Nutrition and Dietetics (AND).

Elizabeth Haracz MS, RD
- Clinical Dietician
Elizabeth Haracz MS, RD
Locations
Languages
- English
Departments
Biography
- Elizabeth Haracz, M.S., R.D., is an inpatient dietitian at Children’s National Hospital, covering the hematology, oncology, and neurology units. She completed her undergraduate degree at Virginia Tech with a B.S. in Human Nutrition, Foods, and Exercise. She then completed a combined M.S. in Nutrition Sciences and Dietetic Internship from The University of Alabama at Birmingham (UAB). She also completed a traineeship at the Pediatric Pulmonary Center (PPC) at UAB. Elizabeth is a member of the Academy of Nutrition and Dietetics (AND).

Laura Hashiguchi RD, LD, CSP
- Lead Inpatient Dietitian, Expert
Laura Hashiguchi RD, LD, CSP
Locations
Languages
- English
Departments
Biography
Laura graduated with her B.S. in dietetics from James Madison University and completed Sodexo’s Philadelphia Dietetic Internship with a Pediatric emphasis. Laura has worked at Children’s National since 2014 and during this time covered a wide variety of patient populations both inpatient and outpatient. Laura obtained her board certification as specialist in pediatric nutrition in 2021. Currently, Laura works in the Cardiac Intensive Care Unit and also serves as Inpatient Lead Dietitian.

DoYeon Lee RD, LDN, CNSC
- Clinical Dietitian, Specialist II
DoYeon Lee RD, LDN, CNSC
Locations
Languages
- English
Departments
Biography
- DoYeon (Kimberley) Lee, RD, LDN, CNSC is an inpatient clinical dietitian with the Gastroenterology and Intestinal Rehabilitation Services at Children’s National Hospital. She received her Bachelor of Science in Dietetics from the University of Delaware in 2016 and completed her Dietetic Internship in 2018. Kimberley is a certified as a nutrition support clinician. She is currently a member of the Academy of Nutrition and Dietetics and American Society for Parenteral and Enteral Nutrition.

Morgane Lemire RD, LDN, MPPD
- Clinical Dietitian, Specialist II
Morgane Lemire RD, LDN, MPPD
Locations
Languages
- English
Departments
Biography
Morgane Lemire, R.D., L.D.N., MPPD, is a clinical dietitian at Children’s National Hospital. She completed her undergraduate degree at Pennsylvania State University with a B.S. in Nutritional Sciences in 2017. She then completed her Dietetic Internship and earned her Master of Professional Practice in Dietetics in 2019 from Iowa State University. Morgane started her career at Children’s National in November 2022. She currently works with the gastrointestinal and intestinal rehabilitation team.

Mackenzie Morgan MPH, RD
- Clinical Dietitian, Specialist I
Mackenzie Morgan MPH, RD
Locations
Languages
- English
Departments
Biography
- Mackenzie Morgan, MPH, RD is a dietitian in the NICU at Children’s National. She completed a B.S. in Health Sciences at Clemson University in 2016 followed by a coordinated MPH/RD program at the University of North Carolina at Chapel Hill in 2019.

Hannah Nua MS, RD
- Clinical Dietitian, Specialist I
Hannah Nua MS, RD
Locations
Languages
- English
Departments
Biography
Hannah Nua, M.S., R.D., is a dietitian covering the Pediatric Intensive Care Unit (PICU) and Bone Marrow Transplant (BMT) unit. She earned a B.S., in exercise science at California Lutheran University and went on to earn a M.S., in nutrition and dietetics and complete her dietetic internship requirements through the coordinated program at Loma Linda University.

Elaine Parry MS, RDN, LDN
- Clinical Dietitian
Elaine Parry MS, RDN, LDN
Locations
Languages
- English
Departments
Biography
Elaine Parry, M.S., R.D.N., L.D.N., is an outpatient clinical dietitian at Children’s National Hospital in the Improving Diet, Energy and Activity for Life (IDEAL) weight management and bariatric surgery clinic. She completed her bachelor’s degree and combined dietetic internship and master’s degree at Brigham Young University in Provo, UT. Her master’s degree research focused on identifying obesity risk factors for Hispanic 3–5-year-old children; she looks forward to working with families from this population as well as others in the IDEAL clinic to improve their health.

Nicole Potolicchio RD, CSP, LD
- Clinical Nutrition Manager
Nicole Potolicchio RD, CSP, LD
Locations
Languages
- English
Departments
Biography
- Nikki Potolicchio, RD, CSP, LD, completed undergraduate training at the College of the Holy Cross with a degree in Psychology and later completed her didactic requirements as well as a Dietetics Internship at the University of Maryland. She started her career at Children’s National Hospital in 2014 in the Pediatric Intensive Care Unit (PICU) and Bone Marrow Transplant (BMT) unit. She worked in those departments for 8.5 years. Nikki became the Inpatient Lead Dietitian in 2020 and then became the Clinical Nutrition Manger in 2023.

Sara Preisendanz MS, RD, LD
- Clinical Dietitian, Expert
Sara Preisendanz MS, RD, LD
Locations
Languages
- English
Departments
Biography
Sara Preisendanz, M.S., R.D., L.D., undergraduate training at Clarkson University with a degree in BioMolecular Science and later fulfilled didactic requirements at New York University. She completed her Dietetic Internship and earned her Master’s Degree in Nutrition from Texas Woman’s University. As a clinical dietitian she has worked in ICU, renal and liver transplant, oncology, bariatrics, genetics and many others. Currently, she provides nutrition assessment & education for families of children with intractable seizures or inborn errors of metabolism requiring ketogenic diets. She enjoys problem solving and developing achievable diet plans and goals for families of children with complicated nutrition needs.

Kelsey Riemenschneider RD, CNSC
- Clinical Dietitian
Kelsey Riemenschneider RD, CNSC
Locations
Languages
- English
Departments
Biography
- Kelsey Riemenschneider, RD, CNSC works with the Cardiology team for Children’s National Hospital. She completed her B.S. in Dietetics at Iowa State University in 2021 and is currently completing her M.S. in Clinical Nutrition online at the University of Alabama. She is a board-certified nutrition support clinician.

Sabrina Riordan RDN
- Clinical Dietitian
Sabrina Riordan RDN
Locations
Languages
- English
Departments
Biography
Sabrina Riordan, R.D.N., L.D.N., is a clinical outpatient dietitian at Children’s National Hospital working in diabetes, IDEAL, muscular dystrophy, and CANDO clinics. She earned her Bachelor of Science in nutrition and food science with a concentration in Dietetics from University of Maryland, College Park. She then went on to complete her dietetic internship at University of Virginia Health System, which specialized in pediatrics and nutrition support. Sabrina is also a member of the Academy of Nutrition and Dietetics (AND) and the Maryland Academy of Nutrition and Dietetics (MAND).

Sarah Roberts MS, RDN, LDN
- Clinical Dietitian
Sarah Roberts MS, RDN, LDN
Locations
Languages
- English
Departments
Biography
Sarah Roberts, M.S., R.D.N., L.D.N., works with the Endocrinology and Diabetes team for Children’s National Hospital. She completed her undergraduate degree at the University of South Carolina with a B.S. in Exercise Sciences in 2018. She went on to earn her M.S. in Nutrition and complete her Dietetic Internship through Boston University’s combined DPD/MS/DI program in 2022. She is currently a member of the Academy of Nutrition and Dietetics (AND).

Sami Schug MS, RD, LD
- Clinical Dietitian, Specialist II
Sami Schug MS, RD, LD
Locations
Languages
- English
Departments
Sami Schug, MS, RD, LD is a pediatric dietitian for the Pediatric Intensive Care Unit. She completed her undergraduate degree from the University of Delaware in Dietetics and dietetic training at Pennsylvania State University. She later earned her Master’s Degree in Integrative Medicine from George Washington University and now serves as an adjunct faculty member for the Department of Clinical Research & Leadership. She is a member of the American Society of Parenteral and Enteral Nutrition.

Kristen Sgambat PhD, RD
- Clinical Dietitian, Expert
Kristen Sgambat PhD, RD
Locations
Languages
- English
Departments
Biography
Kristen Sgambat, Ph.D., R.D., is a registered dietitian nutritionist and has provided medical nutrition therapy to children with kidney disease at Children’s National Hospital since 2002. She received her Ph.D. in nutrition from the University of Maryland and is currently a Clinical Assistant Professor in the Division of Nephrology. Her studies have focused on cardiovascular outcomes in children with CKD and after kidney transplant, as well as effects of carnitine supplementation on cardiovascular function in children receiving HD and CRRT.

Catherine Slomka MS, RD, LD
- Clinical Dietitian, Expert
Catherine Slomka MS, RD, LD
Locations
Languages
- English
Departments
- Catherine Slomka, MS, RD, LD is an outpatient dietitian in the Adolescent Medicine Division, specializing in Eating Disorders. She completed her masters degree and dietetic internship at Loma Linda University. Catherine is a former professor for Point Loma Nazarene University and is also a member of the Academy of Nutrition and Dietetics.

Alyssa O'Doherty MS, RD, LD, CLC, CNSC
- Clinical Dietitian, Expert
Alyssa O'Doherty MS, RD, LD, CLC, CNSC
Locations
Languages
- English
Departments
Biography
Alyssa O'Doherty, M.S., R.D., L.D., C.L.C., C.N.S.C., is a pediatric clinical dietitian in the Neonatal Intensive Care Unit (NICU) at Children’s National Hospital. She completed her undergraduate training at the University of Mississippi. She went on to earn her Master’s degree in nutrition and complete her dietitian internship through the University of Mississippi’s coordinated program. She is an involved member of the American Society for Parenteral and Enteral Nutrition (ASPEN) and the Academy of Nutrition and Dietetics (AND). She is a Board-Certified Nutrition Support Clinician (CNSC) and a Certified Lactation Counselor (CLC).

Siobhan Vogel MS, RD, CSP, LD
- Clinical Dietitian, Expert
Siobhan Vogel MS, RD, CSP, LD
Locations
Languages
- English
Departments
Biography
Siobhan Vogel, M.S., R.D., C.S.P., L.D., is a clinical dietitian for the Cardiac ICU as well as one of the dietitians for the ketogenic diet, neurology services and neurosurgery services at Children’s National Hospital. She completed undergraduate training at University of South Carolina with a degree in Exercise Science and later completed her didactic requirements at Winthrop University. Siobhan completed her Dietetics Internship at Winthrop University. In 2015 she completed her Master's in Human Nutrition online through Northeastern University. She is a board-certified specialist in pediatric nutrition.

Rebecca Wilson RD, CLC, LD
- Clinical Dietitian, Specialist II
Rebecca Wilson RD, CLC, LD
Locations
Languages
- English
Departments
Biography
Rebecca Wilson, RD, CLC, LD is a Registered Dietitian for the General Medicine, Adolescent Medicine, Eating Disorder, and Psych Units at Children’s National Hospital. Prior to her current role, she worked in the Neonatal Intensive Care Unit and the General Nutrition, Cardiac Neurodevelopmental, and IDEAL Weight Management and Bariatric Surgery outpatient clinics. She completed her degree in Food and Nutrition from the University of Alabama in 2017 and went on to complete her dietetic internship at the University of Maryland, College Park in 2018. She has completed her certificate of training in Childhood and Adolescent Weight Management and Certified Lactation Consultant (CLC) Certification.

Allison Wiseman RD, CDE, LD
- Pediatric Dietitian Specialist II
Allison Wiseman RD, CDE, LD
Locations
Languages
- English
Departments
Biography
Allison Wiseman, R.D., C.D.E., L.D., is a clinical dietitian in the Cystic Fibrosis Clinic. She has been at Children’s National Hospital since 2012. She completed her undergraduate degree in Nutrition Sciences at Syracuse University. She completed her dietetic internship at New York Presbyterian. She is a Certified Diabetes Educator and has worked alongside the Diabetes team to open the Cystic Fibrosis Related Diabetes Clinic. She continues to research the correlation between blood glucose control and lung function.