Lab Members

Our Staff

Photo of Stephanie Chung
Acting Section Chief

Stephanie T. Chung, M.B.B.S., is a board certified pediatric endocrinologist and internist, Lasker Tenure-Track Investigator, Co-Director of Metabolic Research Program at NIDDK and Adjunct Assistant Clinical Professor at George Washington University. Dr. Chung has over 12 years of experience conducting clinical studies in children and adults with diabetes and obesity. She currently leads a clinical metabolic research program that focuses on improving population-specific risk stratification and management of type 2 diabetes and cardiovascular disease with the goal of reducing health disparities especially in youth and young adults. Her passions include running as well as baking delicious treats for her family and lab.

Photo of Lilian Mabundo.
Lilian Mabundo, RN, MSN
Research Nurse Specialist

Lilian Mabundo, RN, MSN, is a research nurse in the Diabetes, Endocrinology and Obesity Branch with a master’s degree in Nursing Education. She is lead associate investigator for clinical studies with expertise in conducting metabolic phenotyping using isotope tracers. She assists with the clinical management and education of patients, study implementation and data collection and organization. Outside of lab, she loves spending time with her family and friends, watching movies, exercising, decluttering, and is an avid “foodie.”

Photo of Dr. Abby Meyers.
Abby Meyers, M.D.
Special Volunteer, Attending Physician, Divison of Endocrinology, Children’s National Hospital

Abby Meyers, M.D., is a pediatric endocrinologist and Assistant Clinical Professor at The Children’s National Hospital in Washington DC. Dr. Meyers completed her research fellowship at the Eunice Kennedy Shriver InterInstitute Fellowship Program, NICHD under the mentorship of Dr. Chung. Her research interests include improving the care and treatment of youth with obesity and type 2 diabetes center. She is credentialed and permitted to see patients at both CNMC and NIH.

Our Fellows

Photo of Dr. Vandhna Sharma.
Vandhna Sharma, M.D.
Clinical Research Endocrinology Fellow

Vandhna Sharma, M.D., is a clinical fellow in NIH’s Inter-Institute Endocrinology Fellowship Program. She completed her internal medicine training at George Washington University Medical Center/Providence Hospital in Washington, D.C. Vandhna is board certified in internal medicine by the American Board of Internal Medicine. She joined NIH in July 2019, and her clinical research interests focus on obesity, metabolism, type 2 diabetes, and the transition from adolescence to adult insulin resistance. She enjoys staying physically active with her family, going out on runs with her husband, and trips to the park with her daughter.

Photo of Dr. Ana Zenno.
Anna Zenno, M.D.
Clinical Endocrinology Fellow, NICHD

Anna Zenno, M.D., is a clinical fellow in NIH Inter-Institute Endocrinology Fellowship Program. She obtained a B.S. in Biology and Society from Cornell University, M.D. from Stony Brook University School of Medicine and completed her residency in the Combined Internal Medicine-Pediatrics Program at the University of Massachusetts Medical School-Baystate in Springfield, Massachusetts. Her research interests include adult and pediatric obesity, bariatric and metabolic surgery, type 2 diabetes, and transition of care from childhood to adulthood in endocrinology. In her free time, she enjoys biking, yoga, and exploring new restaurants.

Photo of ] Alfredo Villalobos-Perez.
Alfredo Villalobos-Perez, B.S.
Study Coordinator, Post-baccalaureate Intramural Research Training Award Fellow

Alfredo is a premedical post-baccalaureate fellow who doesn’t like snow. He completed his undergrad at Grinnell College in 2019 with B.A’s in Biology and Anthropology. He is interested in understanding the natural history of cardiovascular disease in youth with Type 2 Diabetes. At the moment, he is studying biomarkers of inflammation. Outside of lab, Alfredo enjoys visiting his family and volunteering with youth development organizations. Coming from a migrant farm working background, he visits his family in Florida or North Carolina depending on the tomato season.

Katrina Dietsche, B.S.
Study Coordinator, Post-baccalaureate Intramural Research Training Award Fellow
Katrina Dietsche is a first year post-baccalaureate fellow with Dr. Stephanie Chung. She completed her undergraduate at the University of Minnesota with a B.S in cellular physiology and a minor in nutrition. Katrina took a special interest to insulin and insulin signaling when she began started studying hormones in high school. Every since, her fascination for both the mechanism and public health impact of diabetes has grown. With Dr. Chung, Katrina is working to understand how gluconeogenesis is impacted in youth with diabetes and the gut microflora's response to metformin. Outside of lab, Katrina enjoys crocheting, doing yoga, and checking out the live music scene in DC.
Photo of Sydney Dixon.
Sydney Dixon, B.S.
Study Coordinator, Post-baccalaureate Intramural Research Training Award Fellow, NAEP
Sydney is a Clinical Study Coordinator in the Diabetes, Endocrinology and Obesity Branch. She graduated from Howard University, with a B.S. in Biology and minor in Chemistry. With an extensive family history of diabetes, Sydney is a proud member of Dr. Stephanie Chung's lab where her research focuses on Pediatric Diabetes, Obesity, and Metabolic disorders. Sydney is passionate about reducing health disparities in minority and underserved populations. She has a keen interest in maternal & child health and plans to become an OB/GYN upon completion of her fellowship. When she is not at NIH, she's riding her peloton, playing golf, or watching an action movie. She loves spending time with her loved ones, travel spontaneously, and (safely) doing car karaoke to Hip-Hop/R&B & Rap music!

Group Photos

Photo of Celeste and Dr. Meyers at the 14th Annual NIDDK Scientific ConferenceCeleste and Dr. Meyers at the 14th Annual NIDDK Scientific Conference

Chung Group Field Trip to Great Falls 2019Hi`ilei and Jennifer were a part of the 2019 NIDDK Diversity Summer Research Training Program (DSRTP) for Undergraduate Students. Left to right: Dr. Stephanie Chung, Hi`ilei Ishii-Chaves, Jennifer Hudson, and Celeste Cravalho.

Dr. Chung Presenting the Results from the Federal Women’s Study at the American Diabetes Association’s 79th Scientific Sessions Dr. Chung Presenting the Results from the Federal Women’s Study at the American Diabetes Association’s 79th Scientific Sessions

Celeste and Lilian at the American Diabetes Association’s 79th Scientific Sessions in San Francisco, CACeleste and Lilian at the American Diabetes Association’s 79th Scientific Sessions in San Francisco, CA

NIH Summer Postbac Poster Day 2019 NIH Summer Postbac Poster Day 2019.  Left to right: Dr. Stephanie Chung, Jennifer Hudson, Hi`ilei Ishii-Chaves, Celeste Cravalho, and Dr. Abby Meyers