Our Physicians

Dr. Cheung was born and raised in Orange County, California and is 4th generation Asian American. She did her undergraduate work at UCLA where she received a Bachelor's degree in Biochemistry and was awarded Magna Cum Laude honors. She went on to purse a Masters in Public Health in Health Education and Health Policy at UCLA, where she was also awarded the distinction of Highest Honors. She completed her medical school training at UC San Diego School of Medicine in 2004, and completed her residency training at White Memorial Medical Center/Loma Linda University in Los Angeles where she was Chief Resident in Internal Medicine.

Dr. Harari received her medical degree with distinction at Washington University School of Medicine, trained in general surgery at Columbia University and completed the premier U.S. Endocrine Surgery fellowship at UCSF before coming to UCLA. After arriving at UCLA, she also completed a Masters of Science in Clinical Research. Her research interests focus on risk factors for developing advanced thyroid cancers. Dr. Harari is an expert in the management of benign and malignant tumors of the adrenal, thyroid, and parathyroid glands as well as the neuroendocrine pancreas.

Dr. Aaron Lisberg grew up in Minneapolis, Minnesota and received a B.A. in Biology from Grinnell College. He attended the University of Minnesota Medical School, where he was elected to the AOA honor society. He completed his Internal Medicine residency at The University of Washington, in Seattle, followed by fellowship training at UCLA in hematology/oncology. During his medical training, Dr. Lisberg co-authored a number of high impact peer reviewed publications in a diversity of areas including stem cell therapy, skin cancer, and lung cancer.

Dr. Shieh grew up in the Greater Boston area, and received his undergraduate degree in Biology from the Massachusetts Institute of Technology. He then moved to New York City, where he earned his medical degree and completed his Internal Medicine residency training at Weill Cornell Medical College. After his residency, he moved to Los Angeles, where he went to UCLA for his Endocrinology fellowship. During this fellowship, he received training in all areas of clinical endocrinology, as well as extensive clinical and research training in osteoporosis from world leaders in the field. Dr. Shieh has been on the UCLA faculty since 2016. He currently sees patients at both the Westwood campus and in the South Bay. His clinical practice focuses on osteoporosis and calcium disorders, but he is also interested in general endocrinology. Dr. Shieh remains actively involved in osteoporosis research, and has published in top journals in his field, including the Journal of Clinical Endocrinology & Metabolism, the Journal of Bone and Mineral Research, and Osteoporosis International. He has served as guest editor of the Bone Disorders issue of Endocrinology & Metabolism Clinics of North America, and is currently a reviewer for Osteoporosis International and Bone. In his free time, he enjoys spending time with his wife and two baby girls, going to the driving range and batting cage, and traveling. He is fluent in Mandarin.