Division Faculty & Instructors

Division Faculty


Justin P. Annes MD, PhD

Associate Professor of Medicine

Dr. Justin Annes specializes in the treatment of hereditary endocrine disorders with particular focus on neuroendocrine-related conditions. He developed the Stanford Endocrine Genetics Clinic in 2012 which is part of the interdisciplinary Stanford Hypertension Center and Stanford Neuroendocrine Tumor Program. 
He has medical practice has focused on hereditary endocrine disease since 2008.


Danit Ariel, MD, MS

Clinical Assistant Professor

Danit Ariel, MD MS, is double board certified in Internal Medicine and Endocrinology. Dr. Ariel graduated from UC Davis School of Medicine. She then completed a residency in Internal Medicine at Stanford and a fellowship and post-doctorate in Endocrinology and Metabolism at Stanford before joining the faculty at Stanford. 


Marina Basina, MD

Clinical Professor of Medicine

Dr Basina is a clinical endocrinologist and clinical researcher with a focus on diabetes management, thyroid, and adrenal conditions. Her primary interests are in Type 1 Diabetes, Diabetes technology, and Diabetes in pregnancy. Dr Basina is Board certified in Endocrinology and Internal Medicine. She received numerous teaching awards and Stanford Hospital award for excellence in patient care. She is an active member of medical advisory boards for several community diabetes organizations. Dr Basina is a medical director of inpatient diabetes program at Stanford and a chair of diabetes task force.


Julie Chen, MD

Clinical Assistant Professor

Julie Chen, MD, is a clinical assistant professor in endocrinology at Stanford University.  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 developed online teaching resources for the endocrine fellowship program.


Katrin Chua, MD

Associate Professor of Medicine

Katrin Chua, MD directs a research program focused on fundamental mechanisms of chromatin regulation and genome maintenance and how they impact onaging, cancer and other age-related disease processes. For over 15 years, her laboratory has pioneered studies of the mammalian SIRT6 and SIRT7 genes and elucidated their roles as master regulators of cellular aging, metabolism, stress resistance, and longevity. In addition to training students and post-doctoral fellows in her lab, Dr. Chua serves as Director of the Stanford MD-PhD Medical Scientist Training Program, and is dedicated to ensuring that the Stanford MSTP continues to be an international leader in training a diverse group of future physician-scientists who will have a lasting impact on medicine and biomedical research.


Colleen Craig, MD

Instructor: Stanford University School of Medicine Endocrinology, Gerontology & Metabolism

Dr. Craig is a clinical investigator whose research interests center on examining the roles of incretin hormones on glucose metabolism and on the development and application of targeted therapies for improved glucose homeostasis. Dr. Craig has a special interest in post-bariatric hypoglycemia (PBH) and other forms of hyperinsulinemic hypoglycemia. Ongoing clinical investigations examine mechanisms mediating PBH, as well as the cognitive, cardiovascular, and quality of life implications of recurrent severe hypoglycemia. Dr. Craig obtained her M.D. at Brown University School of Medicine and completed her postdoctoral research fellowship at Stanford University School of Medicine.




Kaniksha Desai, MD

Clinical Assistant Professor

Dr. Kaniksha Desai is a board-certified endocrinologist and clinical assistant professor of endocrinology at Stanford University. She completed her endocrinology fellowship at the Mayo Clinic, with an emphasis on the management of patients with thyroid cancer. Dr. Desai’s clinical practice focuses on the management of patients with thyroid diseases, including thyroid nodules and thyroid cancers, and the management of patients with pituitary disorders. She also maintains board certification in neck ultrasonography and internal medicine.


Chrysoula Dosiou, MD, MS

Clinical Professor

Dr. Dosiou specializes in the treatment of patients with thyroid disease. She has a special interest in the evaluation and treatment of thyroid disease in the setting of pregnancy and the care of patients with thyroid-eye disease.


Neil Gesundheit, MD, MPH

Professor of Medicine - Teaching

Dr. Neil Gesundheit is a board-certified endocrinologist who trained in the clinical thyroid unit at the National Institutes of Health. He sees hospitalized general endocrine patients at Stanford and the Palo Alto Veterans Administration Hospitals. He directs the second-year medical student endocrine physiology course and is deeply involved in education and in overseeing the career development of Stanford medical students, residents, and fellows.


Andrew R. Hoffman, MD

Professor of Medicine

Dr. Andrew Hoffman is a board certified endocrinologist who specializes in the treatment pituitary and other neuroendocrine diseases, including acromegaly, Cushing syndrome, prolactinomas and other pituitary tumors. His current laboratory research is examining the role of epigenetics, including long noncoding RNAs, DNA methylation, histone changes and long range chromatin interactions, in normal biology and in cancer.


Laurence Katznelson, MD

Professor of Medicine and Neurosurgery

Laurence Katznelson, MD received his medical degree from the University of California, Los Angeles and performed his internship and residency in Internal Medicine at the Hospital of the University of Pennsylvania, Philadelphia. He then performed a fellowship in Endocrinology and Metabolism at the Massachusetts General Hospital, Boston. Dr. Katznelson is a Professor of Neurosurgery and Medicine at Stanford University School of Medicine,and Associate Dean, Graduate Medical Education. His clinical interests are pituitary disorders, including acromegaly, Cushing disease, prolactinoma, and hypopituitarism


Seung K. Kim, MD, PhD

Professor of Developmental Biology and by courtesy Endocrinology, Gerontology and Metabolism

Dr. Seung Kim, MD, PhD is a researcher and his lab studies pancreas developmental biology and cancer biology in several models, including fruit flies, mice and humans. His lab has innovated methods for studying pancreas biology in these models, and discovered cellular, molecular and genetic mechanisms governing islet β-cell growth, development and function in mouse and human pancreas. One goal of the lab’s research is to translate studies into novel diagnostic and therapeutic strategies for common pancreatic disease states in humans, particularly diabetes mellitus and pancreatic cancer. Dr. Kim has also contributed to science education in multiple ways over the past two decades as a PI and mentor in several graduate and post-graduate training programs at Stanford and a high school program in New England, and is committed to training the next generation of biomedical researchers.



Sun H. Kim, MD

Assistant Professor of Medicine

Sun Kim, MD MS, is a board-certified endocrinologist who specializes in the treatment of type 2 diabetes, polycystic ovarian syndrome (PCOS), and obesity. She is particularly devoted to helping individuals change their lifestyles and achieve sustained improvements in their health. 


Fredric B. Kraemer, MD

Professor of Medicine

His research is directed at understanding cellular lipid metabolism, with a focus on the regulation of fatty acid flux in adipose cells and on cholesterol trafficking for steroid hormone production.


Rayhan Lal, MD


Dr. Lal is pediatric and adult endocrine faculty at Stanford. He grew up in the California bay area and always wanted to be an engineer. Rayhan has had type 1 diabetes for 30 years. He studied electrical engineering and computer science at U.C. Berkeley. His two younger sisters were enrolled in DPT-1, found to have autoantibodies and developed type 1 diabetes.  Rayhan switched career paths and attended medical school at U.C. Davis. He completed residency in medicine and pediatrics at USC, working with the underserved at LA County Hospital. Rayhan then completed adult and pediatric endocrine fellowships at Stanford.  As an engineer and physician-scientist with diabetes, his research interest is the design, development and testing of new diabetes technology with his mentor, Dr. Buckingham. Rayhan collaborates with members of the Stanford Diabetes Research Center, industry and open-source diabetes community to bypass the biological, technological and human factor limitations of existing devices.



Jennifer Lee, MD, PhD

Associate Professor of Medicine

Dr. Jennifer Lee is an endocrinologist and clinical investigator (PhD Epidemiology, Stanford). Her group focuses on pattern mapping along the life-course risk factors and outcomes and how healthcare system can positively impact health longitudinally. Her group aims to use novel molecular epi, 'big' data, & new designs/methods/tech of clinical trials and observational designs, for better insights to etiology & enhanced health services & delivery. These interests cut across multiple complex chronic diseases, aging, & critical lifespan stages.


Tracey McLaughlin, MD

Professor of Medicine

Dr. McLaughlin is a clinician investigator who maintains an active clinic for patients with complicated type 1, type 2, or other forms of diabetes, polycystic ovarian disease, and hypoglycemia. Her clinical research program includes human studies on obesity, regional fat distribution, and the role of adipocytes and adipose tissue immune cells in promoting insulin resistance and type 2 diabetes. She also conducts studies on the role of incretin hormones in glucose metabolism and postbariatric hypoglycemia, and the use of continuous glucose monitoring and multi-omics methods to define metabolic sub-phenotypes and precision diets for individuals with prediabetes and type 2 diabetes.


Deborah Sellmeyer, MD

Clinical Professor of Medicine

Dr. Sellmeyer is an internationally recognized expert in Metabolic Bone Disease. She is a renowned clinician who joined the Stanford faculty in 2018 as a Professor of Medicine. She has been recognized for her clinical excellence with induction into the Miller Coulson Academy of Clinical Excellence while she was at Johns Hopkins. In addition to her clinical expertise, Dr. Sellmeyer maintains a research program that centers on the effect of nutrition and environmental factors on skeletal metabolism which she has investigated through both smaller CRC-based trials and large multi-center trials.


Aimee Shu, MD

Clinical Associate Professor

I am an endocrinologist with particular interests in reproductive and bone health. 

I enjoy treating patients with menstrual disorders, menopause, fractures, osteoporosis, parathyroid imbalance, and calcium imbalance. 


Marilyn Tan, MD

Clinical Associate Professor

Dr. Tan is double board certified in Endocrinology and Internal Medicine. She practices general endocrinology, but her main clinical interests are outpatient and inpatient diabetes management. Her research interests include diabetes and post bariatric hypoglycemia. Dr. Tan is actively involved in resident and fellow education, and she has served as the Medical Student Clerkship Director, Residency Rotation Director, and Associate Program Director for the Endocrinology Fellowship Training Program. She is the chief of the Stanford Endocrine Clinic.


Joy Wu, MD, PhD

Associate Professor of Medicine and Vice Chair for Basic Sciences

Dr. Joy Wu is a board-certified endocrinologist with over 12 years' experience who specializes in treating women and men with osteoporosis and other bone and mineral diseases, including primary hyperparathyroidism, vitamin D deficiency, Paget's disease and fibrous dysplasia. She has a special interest in optimizing skeletal health for those at risk of bone loss from glucocorticoid treatment, cancer therapies, or organ transplant. She works closely with each individual and his/her referring physician to assess fracture risk, and to develop a tailored treatment and monitoring plan. 

Research Faculty

  • Name
  • Research
  • Hereditary endocrine disorders, ß cell regeneration
  • Molecular mechanisms involved in aging
  • Molecular biology of insulin-like growth factors
  • Pancreatic islet development
  • Insulin resistance
  • Lipid and lipoprotein metabolism
  • Diabetes technology
  • Epidemiology of outcomes related to hormonal perturbations
  • Obesity and diabetes
  • Osteoblast differentiation