Our Physicians

Dr. Arasu earned her medical degree and completed her Internal Medicine residency at UCLA. She went on to do her endocrinology fellowship at UCSF. During that time, she spent extensive time doing research in osteoporosis with world-renowned experts in the field. Dr. Arasu enjoys travelling and trying new restaurants in her free time.

Dr. Amy Cummings is a hematologist and medical oncologist who practices in Westwood and Torrance. In Westwood, she sees lung cancer patients as part of a multidisciplinary team one day a week and runs clinical trials. In Torrance, she sees patients with all types of cancer and offers virtual visits through the telehealth program. Her clinical interests include immunotherapy, precision medicine, and providing equitable care to all patients regardless of race, ethnicity, sexual orientation, and gender identity.

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. Anna Houterman is a board certified, fellowship trained breast surgeon who practices in Laguna Hills and performs surgery in nearby community hospitals. She specializes in benign and malignant diseases of the breast, and is passionate about providing excellent care for her patients and using the most advanced surgical techniques. She has expertise in oncoplastic surgery, breast conservation surgery, nipple sparing mastectomy and sentinel node biopsy.

Dr. Robert Lin Li is an endocrinologist who practices in Torrance. His clinical interests include diabetes, thyroid disease, metabolic disease, obesity, adrenal disease, disorders of sex hormones, including testosterone and estrogen, pituitary disease, and bone disease. He completed his medical and scientific training at the University of Texas Southwestern Medical School, his internal medicine residency at the Northwestern University Feinberg School of Medicine, and his endocrinology, diabetes & metabolism fellowship at UCLA.

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.