Harvey Singer, M.D.

Todd T. Brown, MD, PhD is a clinical investigator who focuses on body composition, metabolic, and skeletal abnormalities observed in people with HIV, particularly as related to aging. Through translational investigation, epidemiologic studies, and clinical trials, he has been interested in understanding the pathogenesis of glucose disorders, fat changes, hormonal dysregulation, and osteoporosis in people with HIV, the consequences of these conditions (eg cardiovascular disease, frailty), and their optimal evaluation and management.

Dr. Han Na Kim is a Clinical Associate and part-time Assistant Professor of Medicine in the Division of Endocrinology, Diabetes, and Metabolism. Her clinical practice focuses on metabolic bone disease, including osteoporosis and hyperparathyroidism, as well as diabetes mellitus. She earned her medical degree from the University of Chicago Pritzer School of Medicine, completed her residency in Internal Medicine at New York University, and worked as a hospitalist at University of Pittsburgh Medical Center Presbyterian/Montefiore before pursuing an endocrinology fellowship at Johns Hopkins University School of Medicine. She sees patients at the Johns Hopkins Bayview Metabolic Bone and Osteoporosis Center and Green Spring Station Johns Hopkins Endocrinology Clinic (diabetes and thyroid patients only).