School of Medicine


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  • Julia J. Chang, MD

    Julia J. Chang, MD

    Clinical Assistant Professor, Medicine - Endocrinology, Gerontology, & Metabolism

    BioDr. Chang is a board-certified endocrinologist and internal medicine doctor. She is a Clinical Assistant Professor in Stanford Medicine’s Division of Endocrinology, Gerontology, and Metabolism. She specializes in transgender health, pituitary disorders, diabetes, and general endocrine disorders.

    She provides patient care at the Stanford Health Care Endocrinology Clinic and the Stanford Health Care LGBTQ+ Health Program. For each patient, she develops a comprehensive, compassionate care plan personalized to individual needs. Her goal is always the best possible health and quality of life for every patient in her care.

    Dr. Chang leads quality improvement and education initiatives within the endocrinology and pituitary team. She teaches medical students, residents, and fellows and serves as the endocrinology rotation director for residents and medical students.

    Dr. Chang has conducted extensive research and has published peer-reviewed articles on obesity, weight loss, and transgender health in the journals Endocrine Practice, Family Medicine, and Cleveland Clinic Journal of Medicine. She has presented the findings of her research at national meetings of the Endocrine Society and United States Professional Association of Transgender Health.

    She is a member of the Endocrine Society, American Association of Clinical Endocrinology, Pituitary Society, and the World Professional Association of Transgender Health.

    As a volunteer, Dr. Chang has guided medical students providing health care to uninsured residents of the Bay Area.

    When not providing clinical care, teaching, or conducting research, Dr. Chang enjoys time with her family, violin, golf, figure skating, and travel.

    She is a native English speaker and also understands Korean.

  • Julie Chen

    Julie Chen

    Clinical Assistant Professor, Medicine - Endocrinology, Gerontology, & Metabolism

    BioJulie Chen, MD, is a clinical assistant professor in endocrinology at Stanford University. Dr. Chen graduated from Albert Einstein College of Medicine. She then completed her internal medicine residency at the University of California, San Diego and endocrinology fellowship at Stanford University Medical Center. She is double board certified in internal medicine and endocrinology.

    Dr. Chen practices general endocrinology but her clinical interest include thyroid disease/thyroid cancer, pituitary disease, and disorders of the bone. She also has a special interest in medical education and has developed online teaching resources for the endocrine fellowship program.

  • Katrin Chua

    Katrin Chua

    Associate Professor of Medicine (Endocrinology, Gerontology and Metabolism)

    Current Research and Scholarly InterestsOur lab is interested in understanding molecular processes that underlie aging and age-associated pathologies in mammals. We focus on a family of genes, the SIRTs, which regulate stress resistance and lifespan in lower organisms such as yeast, worms, and flies. In mammals, we recently uncovered a number of ways in which SIRT factors may contribute to cellular and organismal aging by regulating resistance to various forms of stress. We have now begun to characterize the molecular mechanisms by which these SIRT factors function. In particular, we are interested in how SIRT factors regulate chromatin, the molecular structure in which the DNA of mammalian genomes is packaged, and how such functions may link genome maintenance to stress resistance and aging.

  • Lawrence Crapo

    Lawrence Crapo

    Professor of Medicine (Endocrinology, Gerontology and Metabolism) at the Santa Clara Valley Medical Center, Emeritus

    Current Research and Scholarly InterestsInvestigation of the epidemiology of diabetic ketoacidosis (DKA) at a public hospital. All cases of DKA at SCVMC occurring over the past 5 years have been identified. Of the 480 cases of DKA, about 1/3 are in Type II diabetics, and 2/3 in Type I diabetics. We are exploring the causes of DKA in the two groups.