School of Medicine


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  • Muharrem Yunce, M.D.

    Muharrem Yunce, M.D.

    Clinical Associate Professor, Pathology

    BioDr. Yunce completed his transfusion medicine fellowship at Stanford and then gained invaluable clinical experience with the Malignant Hematology Group at UCSF for two years. After rejoining Stanford, Dr. Yunce started as the Medical Director of Therapeutic Apheresis. In this role, he works with the nursing and medical staff to ensure life-saving and emergent procedures such as therapeutic plasma exchange (TPE), red cell exchange, plateletpheresis, and leukapheresis are conducted effectively. Additionally, Dr. Yunce oversees extracorporeal photopheresis for solid organ transplant rejection.

    Dr. Yunce is also a well-recognized teaching faculty member in the Department of Pathology. He was honored with the Teaching Award in 2023 by the department and was nominated in 2023 and 2024 for the prestigious Alwin C. Rambar-James B.D. Mark Award for Excellence in Patient Care.

    As an active member of the American Society of Apheresis, Dr. Yunce chairs the research subcommittee on TPE utilization in solid organ transplant rejection and desensitization protocols as well as member of multiple research subcommittees.

  • Ilana Rachel Yurkiewicz

    Ilana Rachel Yurkiewicz

    Clinical Assistant Professor, Medicine - Primary Care and Population Health

    BioDr. Yurkiewicz is a primary care doctor with fellowship training and board certification in internal medicine, oncology, and hematology. She is a clinical assistant professor of primary care and population health in the Department of Medicine at Stanford University School of Medicine.

    She provides expert, compassionate clinical care for patients, advocates for them as a medical journalist, and researches ways to improve their lives through better health and quality of life.

    She has a special interest and expertise in cancer survivorship and improving transitions between oncology and primary care. Her practice is uniquely focused on providing comprehensive care for patients with a history of cancer as well as those carrying genetic diagnoses of elevated risk.

    For each patient, her goal is to provide thoughtful, compassionate, and holistic care.

    As a journalist, she strives to bridge the gaps between academic medicine and everyday lives. She has been a regular columnist for Scientific American and MDEdge. Her writing has appeared in numerous publications and been reprinted in The Atlantic and The Best American Science and Nature Writing anthology. Dr. Yurkiewicz holds the position of Physician-Journalist in Residence at Stanford University School of Medicine.

    Dr. Yurkiewicz is the author of the book Fragmented: A Doctor’s Quest to Piece Together American Health Care from the publisher W.W. Norton.

    She has co-authored research articles that appeared in the New England Journal of Medicine, American Journal of Clinical Oncology, Genetics in Medicine, and other peer-reviewed publications. She also has served as an editorial board member of the journal Hematology News.

    An additional interest of Dr. Yurkiewicz is bioethics. She interned with the Presidential Commission for the Study of Bioethical Issues, conducted extensive research, and published her discoveries in the New England Journal of Medicine, Penn Bioethics Journal, and Ivy Journal of Ethics.

    She has presented her research discoveries to her peers at meetings of the Society of General Internal Medicine, American Society of Hematology, Society of Hospital Medicine, National Society of Genetic Counselors, and elsewhere.

    She is a member of the American College of Physicians and an associate member of the American Society of Clinical Oncology and American Society of Hematology.

  • Lisa Zaba, MD, PhD

    Lisa Zaba, MD, PhD

    Associate Professor of Dermatology

    BioLisa Zaba M.D. Ph.D., is an Associate Professor of Dermatology, and Director of the Merkel cell carcinoma (MCC) multi-disciplinary clinic and member of the supportive oncodermatology group at the Stanford Cancer Center. She runs a lab focusing on the immunology of MCC and the treatment and prognostic implications of immune checkpoint inhibitor and targeted therapy rashes. Dr. Zaba completed medical school at Cornell University, PhD in immunology at Rockefeller University, Residency and Post-Doc at Stanford University in 2013.

  • Sanno Zack

    Sanno Zack

    Clinical Professor, Psychiatry and Behavioral Sciences

    Current Research and Scholarly InterestsDr. Zack is involved with ongoing research related to the treatment of adolescent and adult trauma (Trauma Focused Cognitive Behavioral Therapy - TF-CBT; Prolonged Exposure - PE), and the effective provision of Dialectical Behavior Therapy (DBT) to adolescent girls and women with disorder of emotion regulation. She additionally studies Acceptance and Commitment Therapy (ACT) for adolescent girls with anxiety. More broadly she is interested in the impact of Evidenced Based Treatments on improving quality of life, and helping individuals find the right match for clinical care. Research is conducted through the Early Life Stress and Pediatric Anxiety Disorders Program at Stanford Children's Hospital and the Stanford Dialectical Behavior Therapy Program.

  • Ken Zafren, MD FAAEM FACEP FAWM

    Ken Zafren, MD FAAEM FACEP FAWM

    Clinical Professor, Emergency Medicine

    Current Research and Scholarly InterestsHigh altitude medicine, AMS, HACE, HAPE, cold injuries, including hypothermia and frostbite, emergency medical services, wilderness medicine, mountain rescue, thrombosis, international medicine, travel medicine, emergency medicine, resuscitation

  • Greg Zaharchuk

    Greg Zaharchuk

    Professor of Radiology (Neuroimaging and Neurointervention)

    Current Research and Scholarly InterestsImproving medical image quality using deep learning artificial intelligence
    Imaging of cerebral hemodynamics with MRI and CT
    Noninvasive oxygenation measurement with MRI
    Clinical imaging of cerebrovascular disease
    Imaging of cervical artery dissection
    MR/PET in Neuroradiology
    Resting-state fMRI for perfusion imaging and stroke

  • Dessi Zaharieva

    Dessi Zaharieva

    Instructor, Pediatrics - Endocrinology and Diabetes

    Current Research and Scholarly InterestsThe 4T (Teamwork, Targets, Technology, and Tight Control) Exercise Study focuses on addressing the attitudes & barriers to exercise for families and newly diagnosed youth with type 1 diabetes (T1D). We are currently establishing feasibility and understanding physical activity patterns and behaviours in newly diagnosed youth with T1D using wearable activity trackers. This work also involves delivering structured exercise education to families and youth with T1D over telehealth.

  • Hengameh Zahed, MD, PhD

    Hengameh Zahed, MD, PhD

    Clinical Assistant Professor, Neurology & Neurological Sciences

    BioDr. Zahed is a board-certified, fellowship-trained neurologist with the Stanford Medicine Movement Disorders Center. She is also a clinical assistant professor in the Department of Neurology and Neurological Sciences.

    She diagnoses and treats a wide range of movement disorders including Parkinson’s disease, Huntington’s disease, essential tremor, dystonia, and ataxia. She creates a personalized treatment plan for each of her patients using a variety of treatment options, including pharmacological and non-pharmacological options, deep brain stimulation (DBS) treatment for Parkinson's disease and tremors, and botulinum toxin injections for movement disorders and spasticity.

    Prior to joining Stanford University, Dr. Zahed completed a neurology residency and fellowship in movement disorders at University of California, San Francisco (UCSF), where she also earned her MD and PhD in biomedical sciences. Dr. Zahed’s research interests include understanding the genetic and electrophysiological underpinnings of movement disorders and investigating applications of wearable technologies to monitor symptoms and improve the quality of life in patients with movement disorders. She also participates in clinical trials of new therapeutics for Parkinson’s disease and other movement disorders.

    Dr. Zahed has published in Movement Disorders, Molecular Genetics & Genomic Medicine, The Journal of Clinical Investigation, American Journal of Human Genetics, Cell, and other peer-reviewed journals. She has presented to her peers at international, national, and regional meetings. These meetings have included the International Congress of Parkinson’s Disease and Movement Disorders, the Hereditary Disease Foundation Symposium, the World Society for Stereotactic and Functional Neurosurgery, and the Society for Neuroscience.

    Dr. Zahed is a member of the International Parkinson and Movement Disorders Society.

  • Natalie M. Zahr

    Natalie M. Zahr

    Assistant Professor (Research) of Psychiatry and Behavioral Sciences (Major Laboratories)

    BioNatalie M. Zahr received a graduate education in the basic sciences including the study of neuro- pharmacology, physiology, and anatomy. After completing her graduate training in electrophysiology, she began a postdoctoral fellowship as a magnetic resonance imaging (MRI) scientist. Her work focuses on translational approaches using in vivo MR imaging and spectroscopy in studies of human with Alcohol Use Disorders (AUD) and in rodent models of alcohol exposure with the goal of identifying mechanisms of alcohol effects on the brain. Her human studies include participants with HIV, those co-morbid for HIV and AUD and recently, aging individuals with mild cognitive impairment (MCI). Her position allows her to explore emerging MR technologies and apply them to test relevant hypotheses. Before joining Stanford, she taught at several local institutions including UC Berkeley extension and Santa Clara University where she enjoyed sharing her knowledge and enthusiasm for learning with students.

  • Yulia Zak, MD

    Yulia Zak, MD

    Clinical Assistant Professor, Surgery - General Surgery

    BioDr. Yulia Zak earned her medical degree from SUNY Downstate Medical Center before completing general surgery residency at Stanford University and advanced minimally invasive gastrointestinal and bariatric fellowship training at the Massachusetts General Hospital. Dr. Zak is certified by the American Board of Surgery and American Society for Metabolic and Bariatric Surgery. She has also completed the Stanford Surgical Education and Simulation fellowship and was previously an Assistant Program Director for the general surgery residency program at Mount Sinai Beth Israel. Dr. Zak joined the faculty at Stanford in 2018 and is the current Fellowship Associate Program Director. Her current clinical practice is focused on bariatrics, foregut and abdominal wall procedures. Her academic interests include quality improvement, surgical education, and bariatric outcomes.

  • Sandra Zaky

    Sandra Zaky

    Clinical Associate Professor, Radiation Oncology - Radiation Therapy

    BioDr. Zaky is a board certified Radiation Oncologist. She received a Bachelor’s of Science in Biomedical/Electrical Engineering at Marquette University. She worked in research and development as an Engineer, and eventually received a Masters of Science in Immunology from Albany Medical College. Her research thesis focused on a novel therapy to treat hormone-receptor positive breast cancer. She continued to study breast cancer with her research during her Radiation Oncology residency; she integrated her research in the laboratory with her clinical research in triple-negative breast cancer. Since completing residency, she has worked as a general radiation oncologist, and her special interests include breast cancer, skin cancer, CNS tumors and stereotactic radiotherapy.

  • Abdul K. Zalikha, M.D.

    Abdul K. Zalikha, M.D.

    Clinical Instructor, Orthopaedic Surgery

    BioDr. Zalikha's passion centers on the surgical and nonsurgical care of musculoskeletal conditions and transformational advancements in medicine. After graduating summa cum laude with a Bachelor of Science from the University of Florida, supported by multiple scholarships, he engaged in multiple research fellowships in Japan and Germany. Achieving a 100th percentile score on his Medical College Admission Test, as per his official score report, he earned his MD from the University of Miami Miller School of Medicine on a full tuition scholarship. Dr. Zalikha completed his orthopaedic surgery residency at the Detroit Medical Center/Wayne State University, where he honed his skills on some of the most challenging trauma, penetrating injury, and complex fracture cases. Currently, he is an adult reconstruction fellow in the Department of Orthopaedic Surgery at Stanford Medicine. With over 30 peer-reviewed publications and book chapters, Dr. Zalikha is committed to advancing medical knowledge and exploring innovative approaches to patient care, including the potential for new technologies to fundamentally transform the practice of medicine.

  • Isheeta Zalpuri

    Isheeta Zalpuri

    Clinical Associate Professor, Psychiatry and Behavioral Sciences - Child & Adolescent Psychiatry and Child Development

    BioDr. Isheeta Zalpuri is a child, adolescent and adult psychiatrist. She specializes in the treatment of pediatric anxiety and mood disorders.
    Dr. Zalpuri has a special interest in faculty development, professional development of trainees, physician well-being and cultural psychiatry.