School of Medicine


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  • Yulia Zak, MD, FACS

    Yulia Zak, MD, FACS

    Clinical Assistant Professor, Surgery - General Surgery

    BioDr. Yulia Zak is a board-certified, fellowship-trained minimally invasive and bariatric (weight loss) surgeon. She is also a clinical assistant professor of surgery at Stanford University School of Medicine. Dr. Zak is the program director and unit-based medical director for the Minimally Invasive, Bariatric, and Foregut Fellowship Program.

    Dr. Zak specializes in bariatric surgery, foregut (upper digestive tract) surgery, and abdominal wall procedures. Her research is focused on quality improvement measures, surgical education, and bariatric surgery outcomes. She has published her work in numerous peer-reviewed journals, including Obesity Surgery and the Journal of the American College of Surgeons.

    Dr. Zak is a fellow of the American College of Surgeons.

  • 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.

  • Isheeta Zalpuri

    Isheeta Zalpuri

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

    BioDr. Isheeta Zalpuri is a Clinical Professor in the Department of Psychiatry and Behavioral Sciences at Stanford University School of Medicine. She serves as Program Director for the Child and Adolescent Psychiatry Fellowship, where she is dedicated to advancing exceptional clinical training and supporting the professional growth of future child and adolescent psychiatrists. With a strong foundation in educational pedagogy, Dr. Zalpuri uses innovative, learner-centered teaching methods to create engaging, inclusive, and effective learning environments for students, residents, fellows, and faculty. Her longstanding commitment to excellence in education has been recognized through numerous teaching and mentorship awards.

    As Associate Chair for Clinical Educator Professional Development, Dr. Zalpuri is invested in strengthening faculty development efforts across the department. Her work focuses on creating meaningful opportunities for mentorship, sponsorship, leadership development, and career advancement among clinical educators.

    Clinically, Dr. Zalpuri specializes in Pediatric Anxiety Disorders and Obsessive-Compulsive Disorder. She provides compassionate, evidence-based care for children, adolescents, and families while remaining at the forefront of evolving treatment approaches. She is extensively published in the areas of child and adolescent mental health, medical education, and professional development.

  • Roham Zamanian

    Roham Zamanian

    James and Yvonne Wood Professor of Pulmonary Vascular Medicine

    Current Research and Scholarly Interests1. Development and evaluation of prognostic and diagnostic integral biomarkers in PAH.

    2. Prevalence and Treatment of Insulin Resistance in PAH.

    3. Role of inflammation and proteomic signature in PAH

    4. Development of novel therapeutics (bench to bedside) including FK506 & Elastase Inhibition in PAH.

    5. Assessment of Vasoreactivity (gain and loss) in pulmonary arterial hypertension

    6. Assessment of microvascular function in PAH.

  • Astrid Nicole Zamora

    Astrid Nicole Zamora

    Postdoctoral Scholar, Epidemiology

    BioDr. Zamora's work examines how social and environmental contexts shape the three pillars of health, diet, sleep, and physical activity, and influence chronic disease risk. Her research integrates epidemiologic methods with community-based participatory approaches to translate findings into evidence-based public health strategies. Her goal is to advance chronic disease prevention and promote heart-healthy aging among Latino/a communities and underserved populations.