School of Medicine


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  • Gregory Kovacs

    Gregory Kovacs

    Professor of Electrical Engineering, Emeritus

    Current Research and Scholarly InterestsHis present research areas include instruments for biomedical and biological applications including space flight, solid-state sensors and actuators, cell-based sensors for toxin detection and pharmaceutical screening, microfluidics, electronic interfaces to tissue, and biotechnology, all with emphasis on solving practical problems.

  • Nataliya Kovalchuk

    Nataliya Kovalchuk

    Clinical Professor, Radiation Oncology - Radiation Physics

    BioEducation:
    2002 - B.S., Physics, Drohobych State University, Ukraine
    2004 - M.S., Physics, Minnesota State University, Mankato, MN
    2008 - Ph.D., Applied Physics, University of South Florida (H. Lee Moffitt Cancer Center and Research Institute), Tampa, FL
    2010 - Medical Physics Residency, Mayo Clinic, Rochester, MN

    Academic Appointments:
    2010 - 2015 - Instructor, Harvard Medical School, Massachusetts General Hospital/Boston Medical Center, Department of Radiation Oncology, Boston, MA
    2015 - 2019 - Clinical Assistant Professor, Stanford University, Department of Radiation Oncology, Stanford, CA
    2019 - 2024 - Clinical Associate Professor, Stanford University, Department of Radiation Oncology, Stanford, CA
    2019 - 2024 - Adjunct Associate Professor, MD Anderson Cancer Center/University of Texas, Houston, TX
    2024 - present - Clinical Professor, Stanford University, Department of Radiation Oncology, Stanford, CA
    2024 - present - Adjunct Professor, MD Anderson Cancer Center/University of Texas, Houston, TX

  • Michael Kozal

    Michael Kozal

    Professor of Medicine (Infectious Diseases)

    BioDr. Kozal is a Professor of Medicine in the Division of Infectious Diseases and Geographic Medicine and is the Director of Operations for the Department of Medicine Clinical Research Hub. He previously served as Senior Associate Dean for Veteran Affairs at Stanford School of Medicine and Chief of Staff at VA Palo Alto Health Care System. Prior to coming to Stanford, he was a Professor of Medicine at Yale University School of Medicine and served as Associate Dean for Veteran Affairs at Yale University School of Medicine and the Chief of Staff at VA Connecticut Healthcare System.

    Dr. Kozal is a translational researcher who has focused his research career on three areas: 1) investigating the genetic determinants of HIV and HCV drug resistance, 2) the development of new molecular methods to detect viral mutations, and 3) HIV and HCV clinical trials involving new drugs and diagnostic technology. Dr. Kozal is an expert in microarray and deep sequencing technology receiving patents for his work in genotyping. Dr. Kozal previously directed the Yale HIV Clinical Trials Group and has more than 20 years of experience in running clinical trials, serving as the principal investigator or site investigator on >40 HIV and Hepatitis C trials. He has served on multiple VA and NIH/NCI review panels and was a member of the DHHS/NIH Panel on Antiretroviral Guidelines for Adults and Adolescents from 2015-2024.

    Dr. Kozal is currently serving as the overall Director of Operations for the Department of Medicine Clinical Research Hub. The key hub functions include research navigation, enhanced pre-award support for budgeting and submission strategy, streamlined contracting with research sponsors, a multisite clinical coordination center to coordinate and monitor complex studies, and a centralized digital platform for study design, data access, and analytics.

    Dr. Kozal sees patients in the Infectious Diseases Clinic and the Valley Fever Clinic in Palo Alto.

  • Fredric Kraemer

    Fredric Kraemer

    Gerald M. Reaven, MD, Professor of Endocrinology, Emeritus

    Current Research and Scholarly InterestsOur research interests are in the general area of cellular lipid and lipoprotein metabolism. The work is aimed primarily at understanding the mechanisms regulating cholesterol and triglyceride accumulation in cells. We utilize a variety of techniques from cell biology, biochemistry, and molecular biology.

  • Helena Chmura Kraemer

    Helena Chmura Kraemer

    Professor of Biostatistics in Psychiatry, Emerita

    Current Research and Scholarly InterestsI am interested in the methodology pertinent to dealing with research problems where biological and behavioral interests meet. These interests have been applied not only in psychiatric research, but in those areas of Cardiology, Pediatrics and other fields of medicine in which behavioral research is becoming ever more salient.

  • Lironn Kraler, MD

    Lironn Kraler, MD

    Clinical Assistant Professor, Adult Neurology

    BioDr. Kraler is a board-certified neurologist with subspecialty training in vascular neurology, and a Clinical Assistant Professor at Stanford University School of Medicine. Dr. Kraler is also the Associate Program Director for the Vascular Neurology Fellowship at Stanford.

    Before joining the faculty at Stanford, Dr. Kraler attended medical school at Keck School of Medicine at the University of Southern California where she was elected to the Alpha Omega Alpha National Honor Society. She completed her residency training at Stanford Hospital where she served as chief resident, followed by her Vascular Neurology fellowship training at Stanford. She then completed a post-doctoral research fellowship at Stanford University’s Clinical Excellence Research Center (CERC) focused on addressing the high cost of care in US Hospitals.

    Her research interests include improving access and quality of population health and developing high-value innovations in care delivery that decrease the cost of care while improving the quality to patients. In addition, she has a strong interest in medical education. Dr. Kraler has received recognition for outstanding medical student teaching from the Department of Neurology.

  • Sheri Krams

    Sheri Krams

    Senior Associate Dean, Graduate Education and Postdoctoral Affairs and Professor of Surgery (Abdominal Transplantation)

    Current Research and Scholarly InterestsResearch Interests: 1) NK Cell Responses to EBV, 2) Exosomes in Immune Responses, 3) Plasmacytoid Dendritic Cell-Mediated Graft Prolongation, 4)Transplant Immunology

  • Elliot J. Krane

    Elliot J. Krane

    Professor of Anesthesiology, Perioperative and Pain Medicine (Pediatric Anesthesia) at the Stanford University Medical Center, Emeritus

    Current Research and Scholarly InterestsThe management of pain in children using intraspinal opioids, regional anesthetics, and novel analgesic agents; cerebral and osmolar complications of diabetic ketoacidosis in children.

  • Mark Krasnow

    Mark Krasnow

    Paul and Mildred Berg Professor

    Current Research and Scholarly Interests- Lung development and stem cells
    - Neural circuits of breathing and speaking
    - Lung diseases including lung cancer
    - New genetic model organism for biology, behavior, health and conservation

  • Ian H. Kratter, MD, PhD

    Ian H. Kratter, MD, PhD

    Clinical Assistant Professor, Psychiatry and Behavioral Sciences

    BioDr. Kratter is an adult psychiatrist and fellowship-trained neuropsychiatrist and Clinical Assistant Professor in the Department of Psychiatry & Behavioral Sciences at Stanford University School of Medicine. He is also Director of Non-invasive Neuromodulation in the Stanford Brain Stimulation Laboratory.

    His clinical interests include the psychiatric and cognitive aspects of movement disorders like Parkinson's and Tourette's as well as depression, obsessive-compulsive disorder, and non-invasive and invasive neuromodulation for neuropsychiatric illness.

    His research interests focus on assessing outcomes and understanding the mechanisms of both neuromodulatory and novel pharmacological treatments. This includes both clinical and more mechanistic studies, such as using techniques like repetitive transcranial magnetic stimulation (rTMS) and deep brain stimulation in combination with neuroimaging and electrophysiology. He has been a co-investigator for such studies focusing on obsessive-compulsive disorder, major depressive disorder, and suicidal ideation, and traumatic brain injury.
    His work has appeared in a number of scientific journals including Nature Medicine, American Journal of Psychiatry, Journal of Clinical Investigation, Translational Psychiatry, and Proceedings of the National Academy of Science. He also co-authored the chapter on major depression in the textbook Deep Brain Stimulation: Techniques and Practice.

  • Emily Kraus

    Emily Kraus

    Clinical Assistant Professor, Orthopaedic Surgery

    BioDr. Kraus is a Clinical Assistant Professor at Stanford Children’s Orthopedic and Sports Medicine Center trained in the specialty of Physical Medicine and Rehabilitation (PM&R) sports medicine. She has research and clinical interests in endurance sports medicine, injury prevention, running biomechanics, prevention of bone stress injuries, and the promotion of health and wellness at any age of life. Dr. Kraus is the director of the FASTR Program, which stands for Female Athlete Science and Translational Research. The FASTR program is supported by the Wu Tsai Human Performance Alliance and seeks to close the gender gap in sports science research with an emphasis on early identification and interventions to prevent injury and identify ways to optimize performance in female athletes. Dr. Kraus is also a member of the U.S. Olympic and Paralympic Committee Women's Health Task Force and is the medical director of the Stanford Children's Motion Analysis and Sport Performance Lab. She has completed nine marathons including the Boston Marathon twice and one 50k ultramarathon. With running and staying physically active as one of her personal passions, she recognizes the importance of fitness for overall wellbeing and the prevention of chronic medical conditions.

  • Alan M. Krensky, M.D.

    Alan M. Krensky, M.D.

    Shelagh Galligan Professor in the School of Medicine, Emeritus

    Current Research and Scholarly InterestsMechanisms and therapies for infection, cancer, autoimmunity and transplantation.

  • Prashanth Krishnamohan, MD

    Prashanth Krishnamohan, MD

    Clinical Associate Professor, Adult Neurology
    Clinical Associate Professor (By courtesy), Neurosurgery

    BioDr. Krishnamohan is a board-certified, fellowship-trained neurologist. He is a clinical assistant professor of neurology and neurological sciences and, by courtesy, of neurosurgery at Stanford University School of Medicine. In addition, he is Medical Director of the Neurosciences Service Line at Stanford Health Care – ValleyCare and is Medical Director of its Stroke program.

    Dr. Krishnamohan excels in the diagnosis and treatment of neurological conditions. His clinical interests include the management of stroke, epilepsy, concussion, and coma. With every patient, his goal is to provide personalized care designed to optimize neurological function for the best possible clinical outcome and quality of life.

    He has published extensively on topics including innovations in stroke care quality management and measurement, rapid bedside evaluation of seizures in the ICU, and EEG metrics in comatose cardiac arrest patients. Articles by Dr. Krishnamohan have appeared in Neuroanesthesia and Neurocritical Care, Quality Management in Healthcare, Current Infectious Disease Reports, and other journals. He has presented his research findings at the annual meetings of the Neurocritical Care Society and American Academy of Neurology.
    He has authored chapters on post-concussive syndrome, stroke, and other conditions for the guidebook Ferri’s Clinical Advisor. In addition, he is a reviewer for the Journal of Neuroscience Nursing, Neurohospitalist, and the Journal of Neurology, Neurosurgery, and Psychiatry.

    Dr. Krishnamohan has won recognition from Stanford Health Care, the Institute for Healthcare Improvement Open School, the University of Kentucky College of Medicine, and PSG Institute of Medical Sciences and Research – the latter two his alma maters.

    Dr. Krishnamohan is a member of the Neurocritical Care Society, American Academy of Neurology, and American Heart Association/American Stroke Association. He volunteers as a community health educator with numerous organizations.

  • Anandi Krishnan

    Anandi Krishnan

    Affiliate, Institute for Immunity, Transplantation, and Infection Operations
    Visiting Scholar, Institute for Immunity, Transplantation, and Infection Operations

    BioDr. Krishnan is a translational scientist with experiences in engineering, biosciences, molecular genetics and hematology. Having recently completed her NIH clinical scientist career development award (NHGRI 1K08HG010061-01A1, 2018-24), and NIH-supported research re-entry (NCATS 3UL1TR001085-04S1, 2016-18), Anandi’s interests are in expanding our understanding of the multifaceted function of anucleate blood platelets and their parent megakaryocytes in human disease.

    Her current work, applying platelet transcriptome profiling and machine learning principles, aims to nominate novel clinically relevant strategies for personalized cancer and antiplatelet/antithrombotic therapy. Continued development of this research is likely to identify key mechanistic variables in platelet- and megakaryocyte-specific response to health and disease.

    Recent contributions in both computational and mechanistic components of platelet and blood research lay the groundwork for sustaining contributions to the field of hematology genomic medicine (e.g. Shen et al PMID 34755136, Seetharam et al PMID 36712071, Kelliher et al PMID 37961700, Thomas & Krishnan PMID 38175681, Abbonante et al PMID 38165147, Jutzi et al PMID 35763665, Campbell et al PMID 36194487). Anandi was also was one of the first non-MD PhD scientist to be awarded the NHGRI K08 Clinical Scientist Research Career Development Award, the HTRS Mid-Career Research Award, and the MPN Research Foundation Challenge Grant Award, reflecting her consistent efforts bridging basic and clinical disciplines.

    Select other recognitions include:
    Member, Editorial Board, Journal of Thrombosis and Haemostasis (2024-)
    Ad hoc Reviewer, NIH CSR Cancer and Hematological Disorders Study Section (2023, 24)
    Host Mentor, ISTH Training Fellowship, International Society for Thrombosis and Haemostasis (2023)
    Member, Minority Recruitment Initiatives Subcommittee, American Society of Hematology (2022-26)
    Team Science Leadership Program at Stanford Medicine (2022)
    Peer Mentor, Pathology Stanford Network for Advancement and Promotion (2021)
    Research Mentor, Meharry Medical College, Nashville, Meharry-Stanford initiative *mentee selected for oral presentation & won 2nd place at Meharry (2021)
    Thrombosis & Hemostasis Societies of North America Young Investigator Award (2020)
    Invited Member and Panelist, NSF RESET Conference (2020)
    Invited Member/Panelist, iRelaunch Return to Work Conference, Stanford Alumni Association (2018)
    Featured twice by NIH NCATS in the ‘Features & Briefs’ & ‘Diversity Awardee Profiles’ webpages (2017,18)

    Complete list of publications: https://pubmed.ncbi.nlm.nih.gov/?term=anandi+krishnan&sort_order=asc

  • Thomas M. Krummel, MD, FACS/FAAP

    Thomas M. Krummel, MD, FACS/FAAP

    Emile Holman Professor, Emeritus

    Current Research and Scholarly InterestsSurgical Innovation, Simulation and Virtual Reality in Surgical Education, Fetal Healing-Cellular and Biochemical Mechanisms

  • Sara Marie Krzyzaniak

    Sara Marie Krzyzaniak

    Clinical Professor, Emergency Medicine

    BioSara M. Krzyzaniak, MD, is a Clinical Professor of Emergency Medicine at Stanford University School of Medicine and the Program Director for the Stanford Emergency Medicine Residency. She has held progressive leadership roles in undergraduate and graduate medical education since completing her Emergency Medicine residency training at Denver Health Medical Center, with prior faculty appointments at the University of Illinois College of Medicine before joining Stanford.

    Dr. Krzyzaniak’s scholarly work focuses on medical education, with particular emphasis on gender equity, assessment and feedback, faculty development, and leadership training within academic medicine. She has authored more than forty peer-reviewed publications, multiple book chapters, and several volumes within the Education Theory Made Practical series. Her academic contributions also include more than one hundred invited national and international presentations.

    At Stanford, Dr. Krzyzaniak teaches and mentors across all stages of medical education and holds administrative, curricular, and clinical teaching responsibilities. She serves on numerous institutional and national committees, contributes as an editorial board member and ad hoc reviewer for journals in both emergency medicine and medical education, and maintains an active portfolio of professional service. Her leadership and educational contributions have been recognized through multiple national awards for teaching excellence, mentorship, and program leadership.

    Dr. Krzyzaniak’s work is characterized by a sustained commitment to advancing the training of future emergency physicians, strengthening the academic mission of emergency medicine, and contributing to the broader scholarship of medical education.

  • Kristina Kudelko

    Kristina Kudelko

    Clinical Professor, Medicine - Pulmonary, Allergy & Critical Care Medicine

    Current Research and Scholarly InterestsDrugs and toxins-associated pulmonary arterial hypertension, clinical outcomes research, evaluating the long-term impacts of a standardized pulmonary vascular disease fellowship training program

  • Ellen Kuhl

    Ellen Kuhl

    Catherine Holman Johnson Director of Stanford Bio-X, Walter B Reinhold Professor in the School of Engineering, Professor of Mechanical Engineering and, by courtesy, of Bioengineering

    Current Research and Scholarly Interestscomputaitonal simulation of brain development, cortical folding, computational simulation of cardiac disease, heart failure, left ventricular remodeling, electrophysiology, excitation-contraction coupling, computer-guided surgical planning, patient-specific simulation

  • Andre Kumar MD, MEd

    Andre Kumar MD, MEd

    Clinical Associate Professor, Medicine

    BioDr. Andre Kumar is a Clinical Associate Professor in the Stanford Division of Hospital Medicine with a passion for improving patient care through Point-of-Care Ultrasound (POCUS), clinical research, and education. He earned his MD from Tulane University and completed his residency, chief residency, and a Master's in Education at Stanford University.

    Dr. Kumar has extensive experience in creating, operationalizing, and leading multi-center clinical trials, including investigations related to POCUS, COVID-19 therapeutics, procedural safety, and the long-term health consequences of infections on the heart and lungs. He continues to conduct research and teach POCUS on a local and national level, and is committed to improving the science and education that underlie the next generation of diagnostic tools. Currently, his research focuses on the impact of artificial intelligence (AI) on numerous healthcare applications, particularly for the improving the accuracy of clinician diagnosis, evidence-based management, and medical imaging.

    Dr. Kumar is also a committed educator and mentor to the next generation of physicians. His contributions to medical education have been recognized with several awards, including the Lawrence H. Mathers Award for Exceptional Commitment to Teaching (2023), the Henry J. Kaiser Foundation Award for Excellence in Clinical Teaching (2018, 2022), and the David A. Rytand Clinical Teaching Award (2018, 2022, and 2025). Dr. Kumar has contributed to the creation of educational content, including videos for the Stanford Medicine 25 series that cover various aspects of POCUS.

    Dr. Kumar has held numerous leadership positions that reflect his commitment to advancing medical education and clinical practice. He is the Director of the Rathmann Fellowship in Medical Education at Stanford University. In the School of Medicine, he serves as the Co-Director of Clinical Reasoning and Associate Course Director for the Practice of Medicine course. Dr. Kumar is also the Director of the SMART-HM Program, which focuses on faculty development. He is also the Co-Founder and Director of the SHAPE Program in the Stanford Internal Medicine Residency Program.


    List of publications: https://bit.ly/3eop95i

    ClinicalTrials.Gov registration:
    https://bit.ly/2TizOmD
    https://bit.ly/2zeNBjJ

    Media:
    https://shorturl.at/rNU46
    https://stanfordmedicine.box.com/s/jm3544zdwpihj6bstcv72x76zq9nuzbq
    https://bit.ly/33MZa0O
    https://bit.ly/3t8HE2u
    https://wb.md/2zfjY1N

  • Anshul Kundaje

    Anshul Kundaje

    Associate Professor of Genetics and of Computer Science

    Current Research and Scholarly InterestsWe develop statistical and machine learning frameworks to model gene regulation and decipher the genetic and molecular basis of disease

  • Christian Kunder

    Christian Kunder

    Clinical Associate Professor, Pathology

    Current Research and Scholarly InterestsMy main interest is in understanding the biology of human neoplasms, using traditional histopathology, molecular genetic techniques, and other modalities. In particular, I am interested in soft tissue and genitourinary neoplasms, especially prostate cancer.

    I am also interested in the classification and nomenclature of neoplasms and in practical research that helps us refine these, using a variety of techniques but still principally guided by histopathology.

    I also work on developing next generation sequencing-based tests for genotyping tumors and in expanding the scope of this testing with the goal of identifying patients eligible for novel targeting therapies.

  • Calvin Kuo

    Calvin Kuo

    Maureen Lyles D'Ambrogio Professor

    Current Research and Scholarly InterestsWe study cancer biology, intestinal stem cells (ISC), and angiogenesis. We use primary organoid cultures of diverse tissues and tumor biopsies for immunotherapy modeling, oncogene functional screening and stem cell biology. Angiogenesis projects include blood-brain barrier regulation, stroke therapeutics and anti-angiogenic cancer therapy. ISC projects apply organoid culture and ko mice to injury-inducible vs homeostatic stem cells and symmetric division mechanisms.

  • Christin S Kuo

    Christin S Kuo

    Assistant Professor of Pediatrics (Pulmonary Medicine)

    BioDr. Christin Kuo is a physician-scientist in the Department of Pediatrics. The ultimate goal of her research is to integrate a cellular and molecular understanding of pulmonary neuroendocrine cells (PNECs) to discover new approaches for diagnosing and treating diverse respiratory conditions associated with NE cell dysfunction and excessive proliferation, including neuroendocrine tumors. Abnormal PNECs are found in neuroendocrine cell hyperplasia of infancy (NEHI), pulmonary carcinoids, large cell neuroendocrine carcinoma, and small cell lung cancer. Her innovative approaches to studying the development and molecular diversity of rare but fascinating neurosensory cells with single cell precision, have led to fundamental discoveries. Her lab’s current research aims to apply this knowledge to understanding diverse human pulmonary neuroendocrine cell disorders using interdisciplinary approaches. Dr. Kuo is a Maternal and Child Health Research Institute Faculty Scholar.

  • WILLIAM T. KUO, MD, FSIR, FCCP, FSVM, FACR, FCIRSE

    WILLIAM T. KUO, MD, FSIR, FCCP, FSVM, FACR, FCIRSE

    Professor of Radiology (Interventional Radiology)

    Current Research and Scholarly Interests1) LASER-ASSISTED AND COMPLEX IVC FILTER RETRIEVAL
    2) CATHETER-DIRECTED THERAPY FOR ACUTE PULMONARY EMBOLISM
    3) INTERNATIONAL PE REGISTRY
    4) IVC FILTER REGISTRY
    5) ENDOVASCULAR TREATMENT OF CAVAL AND DEEP VENOUS THROMBOSIS

  • Clair Mariam Kuriakose

    Clair Mariam Kuriakose

    Clinical Assistant Professor, Medicine - Primary Care and Population Health

    BioClair Kuriakose is a Physician Assistant with a clinical background in Pediatric Surgery. She joined Stanford September 2014 as the first Manager of Advanced Practice with the Center for Advanced Practice and officially transitioned to the Executive Director of Advanced Practice on August 2017. Clair is passionate about the value advanced practice providers bring to the complex and ever-changing healthcare industry and truly enjoys collaborating with the various Advanced Practice Providers in the organization to ensure the best care for our patients.

  • Allison W. Kurian, M.D., M.Sc.

    Allison W. Kurian, M.D., M.Sc.

    Professor of Medicine (Oncology) and of Epidemiology and Population Health

    Current Research and Scholarly InterestsI aim to understand cancer burden and improve treatment quality at the population level. I have a strong focus on genetic risk assessment and precision oncology. I lead epidemiologic studies of cancer risk factors, clinical trials of novel approaches to cancer risk reduction, and decision analyses of strategies to optimize cancer outcomes.

  • Lianne Kurina

    Lianne Kurina

    David and Lucile Packard Foundation Professor of Human Biology and Professor (Teaching), by courtesy, of Epidemiology and Population Health

    Current Research and Scholarly InterestsMy recent research has focused on the physical and mental health of military service members. I'm now working with colleagues at the VA.

  • David Kurtz

    David Kurtz

    Assistant Professor of Medicine (Oncology)
    On Partial Leave from 01/02/2026 To 04/30/2026

    Current Research and Scholarly InterestsImplementation of noninvasive detection of malignancies in the clinic remains difficult due to both technical and clinical challenges. These include necessary improvements in sensitivity and specificity of biomarkers, as well as demonstration of clinical utility of these assays. My research focuses on technical development and implementation of assays to detect and track cancers in order to facilitate personalized disease management.