School of Medicine


Showing 2,251-2,300 of 5,184 Results

  • Ryan Keenan, OD

    Ryan Keenan, OD

    Clinical Assistant Professor, Ophthalmology

    BioDr. Keenan is a board-certified optometrist with the Stanford Health Care Byers Eye Institute and a clinical assistant professor in the Department of Ophthalmology.

    Dr. Keenan diagnoses and treats a wide range of ocular and visual issues, such as vision problems related to stroke, intracranial lesions and tumors, and other neurological conditions. His clinical experience involves recognizing and caring for complex neuro-ophthalmic diseases. These include complications from diseases of the nervous system that adversely affect vision.

    Dr. Keenan’s research interests include understanding genetic variations related to progressive weakness of the eye muscles. These conditions range from drooping eyelids to increasing limitations in eye movement.

    Dr. Keenan has presented research and clinical findings to his peers at national and regional meetings, including the annual meetings of the American Academy of Optometry and the North American Neuro-Ophthalmology Society.

  • Kevin R Keet

    Kevin R Keet

    Clinical Assistant Professor, Medicine

    BioDr. Keet is an award-winning medical educator and hospitalist at the Palo Alto VA and Stanford University Hospitals, where he serves as Associate Program Director for the Internal Medicine residency. His clinical practice is grounded in a commitment to empathetic, patient-centered care, and he brings that same orientation to his work with trainees, helping residents develop the clinical reasoning and humanism that define excellent internists. His scholarly interests sit at the intersection of medical education and artificial intelligence, with a particular focus on how physicians can be prepared to use AI tools thoughtfully while preserving the cognitive skills and human judgment that patients depend on.

  • Corey Keller, MD, PhD

    Corey Keller, MD, PhD

    Associate Professor of Psychiatry and Behavioral Sciences (Public Mental Health and Population Sciences)

    Current Research and Scholarly InterestsThe goal of my lab is to understand the fundamental principles of human brain plasticity and build trans-diagnostic real-time monitoring platforms for personalized neurotherapeutics.

    We use an array of neuroscience methods to better understand the basic principles of how to create change in brain circuits. We use this knowledge to develop more effective treatment strategies for depression and other psychiatric disorders.

  • Jennifer Keller

    Jennifer Keller

    Clinical Professor, Psychiatry and Behavioral Sciences

    Current Research and Scholarly Interestsinterpersonal violence and abuse prevention; empowerment of women; cognitive and affective information processing in depression; clinical, biological, and neuropsychological aspects of depression; South Asian mental health

  • Kevin Kelley

    Kevin Kelley

    Assistant Professor of Psychiatry and Behavioral Sciences (General Psychiatry and Psychology)

    BioAs a neuroscientist and psychiatrist, I am motivated by how little we understand about the pathophysiology of psychiatric disorders and hope that further knowledge will help to alleviate the ongoing distress of many of our patients. My research program leverages computational genomics, human brain cellular models, and molecular neuroscience techniques to understand the cellular and molecular mechanisms of human brain development and how dysfunction in these processes lead to psychiatric disorders.

  • Michael Kelly, MD, MSCI

    Michael Kelly, MD, MSCI

    Professor of Orthopaedic Surgery

    BioDr. Michael Kelly is a board-certified, fellowship-trained orthopaedic spine surgeon treating adults and children with Stanford Health Care. He is also a Professor in the Department of Orthopaedic Surgery, Division of Spine Surgery at Stanford University School of Medicine.

    Dr. Kelly is an expert in treating complex spinal deformities in children and adults, performing advanced surgeries and revision procedures to improve pain, movement, and posture. He specializes in managing scoliosis, spondylolisthesis, kyphosis, and other challenging back and neck problems. He has completed multiple fellowships in treating complex deformities, establishing his expertise in performing three-column osteotomy for spinal realignment. Dr. Kelly provides personalized care using the latest, evidence-based approaches to help his patients achieve a better quality of life.

    With a master’s degree in clinical research, Dr. Kelly’s clinical care is driven by his extensive research on spinal deformities and innovations in orthopaedic medicine. His research focuses on improving safety, outcomes, and recovery for spinal surgeries, particularly for spinal deformities. Dr. Kelly’s work has helped define normal spinal alignment, improve surgical techniques, and better understand the long-term impacts of spinal deformity surgeries.

    As a leader in orthopaedic surgery, Dr. Kelly has published hundreds of articles in peer-reviewed journals, including The New England Journal of Medicine, JAMA Surgery, The Lancet Neurology, GeroScience, and The Journal of Bone and Joint Surgery. He is currently Deputy Editor at Spine, the premier spine journal. He has shared his expertise at renowned international conferences, including annual meetings of the Scoliosis Research Society and the Cervical Spine Research Society, where he has won multiple research awards. His presentations often discuss complex spinal deformities, spinal surgery techniques, and strategies to optimize patient care.

    Dr. Kelly is a member of many professional organizations where he has also held leadership positions, including the Scoliosis Research Society, AO Spine, and the Cervical Spine Research Society. He is one of the few surgeons in the International Spine Study Group, dedicated to adult spinal deformity care, and the Harms Study Group, which focuses on pediatric spinal deformities.

  • Timothy Kelly, MD, MPH

    Timothy Kelly, MD, MPH

    Clinical Instructor, Anesthesiology, Perioperative and Pain Medicine

    BioDr. Timothy Kelly, MD, MPH, is a fellowship-trained pain medicine specialist and board-certified emergency medicine doctor at Stanford Health Care. He is a clinical instructor in the Department of Anesthesiology, Perioperative and Pain Medicine at Stanford University School of Medicine.

    Dr. Kelly provides pain management care and treats pain conditions such as chronic neck, back, knee, and shoulder pain.

    Dr. Kelly’s research focuses on the intersection of pain management and emergency medicine. He has studied treatments like peripheral nerve stimulation (using small electrical devices to reduce chronic pain) and targeted drug delivery. Dr. Kelly is interested in bridging the gap between emergency medicine and pain medicine.

    Dr. Kelly’s research has been published in numerous peer-reviewed journals, including Annals of Internal Medicine, Clinical Toxicology, American Journal of Emergency Medicine, and Academic Emergency Medicine Education and Training, among others.

    Dr. Kelly is a member of the American Society of Regional Anesthesia and Pain Medicine (ASRA), North American Neuromodulation Society (NANS), and American Academy of Pain Medicine (AAPM).

  • John L Kendall

    John L Kendall

    Professor of Emergency Medicine (Adult Clinical/Academic)

    BioJohn L. Kendall, MD, FACEP is Professor of Emergency Medicine at Stanford University School of Medicine, where he serves as Director of Academic Affairs, Director of Ultrasound, and Co-Director of Systemwide Point-of-Care Ultrasound (POCUS) for Stanford Health Care. A national leader in emergency and critical care ultrasound, he has published extensively on ultrasound education, quality assurance, and clinical applications, authoring more than 75 peer-reviewed publications and multiple textbooks. He is a Director of both the American Board of Emergency Medicine and the American Board of Medical Specialties, and has chaired numerous national committees shaping ultrasound certification and standards. His contributions to education, research, and leadership have been recognized with multiple national awards, including the Distinguished Service Award and Best Research in Medical Education Award from the Society for Academic Emergency Medicine and the Lifetime Service Award from the American College of Emergency Physicians.

  • Joan Kendig

    Joan Kendig

    Professor of Biology in the Department of Anesthesia, Emeritus

    Current Research and Scholarly InterestsMy laboratory tries to find out how pharmacologic agents used in the practice of anesthesia (general anesthetic and analgesic agents) lead to therapeutically desireable endpoints including unconsciousness, immobility and absence of pain. The old idea that general anesthetics are uniformly non-specific "membrane stabilizers" is giving way to a new realization that these agents exert specific actions on particular ion channels and intracellular signalling systems.

  • Vanessa Kennedy

    Vanessa Kennedy

    Assistant Professor of Medicine (Blood and Marrow Transplantation and Cellular Therapy)

    BioDr. Kennedy is a board-certified hematologist and medical oncologist who specializes in the treatment of myeloid malignancies, including acute myeloid leukemia (AML), myelodysplastic syndrome (MDS), and myelofibrosis (MF). She is an Assistant Professor in the Department of Medicine, Division of Blood and Marrow Transplantation & Cellular Therapy, at Stanford University School of Medicine.

    Dr. Kennedy's research focuses on the use of clinical informatics and bioinformatics in understanding cancer biology and improving patient outcomes. She is also actively involved in interventional clinical trials. Her work has been supported by grant funding from the American Society of Clinical Oncology, the American Society of Hematology, and the Chan-Zuckerberg Foundation.

  • John Kerner

    John Kerner

    Professor of Pediatrics (Gastroenterology), Emeritus

    Current Research and Scholarly InterestsI am interested in pediatric nutritional support and have experience evaluating new enteral and parenteral products especially for the neonate (I studied a "new" I.V. fat product for Abbott; I participated in a multicenter trial of a formula with fish oil in it for neonates with Mead Johnson and a multicenter trial of a new human milk fortifier for Wyeth).

  • Andrew Kesselman

    Andrew Kesselman

    Clinical Associate Professor, Radiology

    Current Research and Scholarly InterestsCurrently studying the role of interventional therapies in caval filtration, venous thromboembolism and primary and metastatic hepatic malignancies.

  • Kian Keyashian

    Kian Keyashian

    Clinical Associate Professor, Medicine - Gastroenterology & Hepatology

    BioThe management of inflammatory bowel disease continues to evolve, with the introduction of biologic and small molecule therapies and new goals of treatment, with an emphasis on healing the bowel. My career goal since my graduation from IBD fellowship in 2012 has been to improve the outcomes and quality of life of patients with inflammatory bowel disease. In line with these goals, my research has focused investigating new noninvasive diagnostic test, finding factors early in the disease course that might predict a more aggressive disease course and need for different therapies, and investigating new promising effective medications with less side effects.

  • Khizer Khaderi MD, MPH

    Khizer Khaderi MD, MPH

    Clinical Associate Professor, Ophthalmology

    BioDr. Khizer Khaderi is a Clinical Associate Professor at the Byers Eye Institute at Stanford University. Khaderi is the Founding Director of the Stanford Human Perception Laboratory (HPL) and the Stanford Vision Performance Center (VPC). He also serves as faculty at the Stanford Institute for Human-Centered AI and the Wu Tsai Human Performance Alliance (HPA)

    Khaderi is a renowned Neuro-Ophthalmic surgeon, technologist and futurist. Dr. Khaderi is pioneering the field of Symbiotics, defined as the convergence of human science + computer science. Khaderi developed the discipline of Symbiotics following initial interest from CS students interested in his research at the Stanford Human Perception Lab. Symbiotics involves a deep understanding in the principles of human systems and applying these principles computationally, to design and develop the next generation of human-centric technologies, where machines perceive, understand and respond to optimize the human experience. Dr. Khaderi envisions the application of Symbiotic principles as the key to unlocking ambient intelligence.

    Khaderi has extensive domain expertise in artificial intelligence (AI), spatial computing (virtual reality (VR), augmented reality (AR), mixed reality (MxR)), wearables, gaming, IoT, Web3, applied neuroscience, human factors, and human-machine interfaces/interaction. His research interests include developing personalized human intelligent systems based on the human brain and sensory systems, developing technologies to optimize human performance, and combining biological and computational principles to expand our capabilities in research, clinical practice, and everyday life. Dr. Khaderi's approach to advance research interests and develop practical applications for everyday use is building technology, companies and collaborative partnerships across academia and industry.

    Dr. Khaderi’s experience across industry sectors include consumer electronics, gaming, retail, life science, sports/Esports health care, Pharma, e-commerce, to name a few. He has developed novel technologies in these areas, and generated multiple invention patents. Selected as a “40 under 40”, he contributed to President Obama’s Council of Advisors on Science and Technology regarding vision technology and the aging population. He also advises multiple companies, venture firms and organizations including Apple, Google, Meta, Microsoft, Riot Games, Intel, Activision, Unity, Epic Games, NBA, Glaukos, the Global Esports Federation, the World Health Organization, the International Olympic Committee, the International Telecommunication Union, and the World Bank.

  • Ali Raza Khaki, MD

    Ali Raza Khaki, MD

    Clinical Assistant Professor, Medicine - Oncology

    BioDr. Khaki is a medical oncologist and clinical assistant professor at Stanford University School of Medicine.

    In his clinical practice, he treats patients with all forms of genitourinary cancer, including kidney, bladder, prostate, and testicular. He also regularly attends on the inpatient oncology service at Stanford Hospital.
    With each patient, he is devoted to providing exceptional, humanistic care and has been recognized throughout his career for his humanism. As a medical student, he was named to the national Gold Humanism Honor Society and he received the Reza Gandjei Humanism Award as a medical resident at UCSF.

    His research interests include novel therapies for genitourinary cancers, with a focus on urothelial cancer outcomes. He is the site principal investigator for multiple clinical trails investigating new therapies for genitourinary cancers.

    Dr. Khaki is also active working clinically in inpatient oncology and is a Unit Based Medical Director for G1, an oncology hospital unit and is the Director of Inpatient Oncology. In this role, he oversees the inpatient oncology teams, works closely with the cancer center to develop new transitions of care pathways from inpatient to outpatient and has co-led an inpatient oncology research group to study quality improvement, care delivery and end-of-life care for patients with cancer.

    Dr. Khaki has earned honors and recognition from the American Association for Cancer Research, American Society of Clinical Oncology, Bladder Cancer Advocacy Network, Conquer Cancer Foundation, and other organizations.

    He has authored numerous articles on topics such as immunotherapy for urothelial cancer, management of cancer patients with COVID-19, and utilization of end-of-life care by cancer patients. In addition, he is an editor for HemOnc.org and theMednet, a physician-only online community where members share clinical questions and answers.

  • Christina Khan, MD, PhD

    Christina Khan, MD, PhD

    Clinical Professor, Psychiatry and Behavioral Sciences

    BioDr. Christina Khan is a pediatric and adult psychiatrist and Clinical Professor in the Department of Psychiatry and Behavioral Sciences. She specializes in the treatment of trauma, depression, anxiety, LGBTQ+ health, and physician wellness. Dr. Khan’s training includes doctoral and postdoctoral research training in community and public health, including specialized training in global health and PTSD research and treatment. Her work focuses on addressing health disparities in underserved populations and treating vulnerable and marginalized populations here in the United States and abroad.

    At Stanford, she is co-Chief of the Diversity and Cultural Mental Health Section in the Department of Psychiatry and Behavioral Sciences and founder and Director of THRIVE, Stanford's LGBTQ+ mental health clinic. She has been working with WellConnect since 2014 addressing burnout, trauma, and secondary trauma in Stanford physicians. Dr. Khan is also a Faculty Fellow at the Center for Innovation in Global Health (CIGH) and serves on the CIGH Program Leadership Committee.

    Nationally, Dr. Khan serves as Past President of the Association of Women Psychiatrists and as Councilor for the Council on Minority Mental Health and Health Disparities of the American Psychiatric Association.

  • Michelle Joanne Khan, MD, MPH, FACOG (she/her)

    Michelle Joanne Khan, MD, MPH, FACOG (she/her)

    Clinical Professor, Obstetrics & Gynecology - General

    Current Research and Scholarly InterestsDr. Khan's research focuses on prevention of HPV-related cancers of the cervix, vagina, vulva, and anus and on the impact of reproductive tract infections on pregnancy and health.

  • Saad A. Khan, MD

    Saad A. Khan, MD

    Associate Professor of Medicine (Oncology)

    BioDr. Khan is a fellowship-trained cancer specialist with board certification in oncology and hematology. He is an assistant professor in the Department of Medicine, Division of Oncology.

    Dr. Khan focuses on the treatment of head and neck cancers, advanced thyroid cancers, and neuroendocrine tumors. He recognizes the broad effects of these conditions on daily living and aims to develop personalized, comprehensive treatment plans that optimize health and quality of life.

    Dr. Khan’s research interests include therapeutic clinical trials as well as ways to reduce toxicities that some patients may experience when receiving cancer treatment. His research activities include ongoing clinical trials of targeted and immune therapy for aggressive thyroid cancer.

    He has published numerous articles on his research discoveries in peer-reviewed journals such as the JAMA Oncology, Investigational New Drugs, and others. Topics include new drug treatments for small cell lung cancer and for cancers of the head and neck, racial and gender disparities in certain types of cancer, and management of the potentially toxic effects of cancer therapies.

    Dr. Khan is a member of the NRG Head and Neck Committee. NRG brings together internationally recognized groups (the first words in their names form the acronym “NRG”) to conduct cancer clinical research and share study results. The objective is to inform clinical decision making and healthcare policy worldwide.

    Dr. Khan is a member of the ECOG Head and Neck Core and Thoracic Committees. ECOG (Eastern Cooperative Oncology Group) is part of one of the five groups of the National Cancer Institute (NCI) National Clinical Trials Network (NCTN) Program.

    He also is a member of the National Cancer Institute’s Central IRB for Early Phase Clinical Trials.

    When not providing patient care or conducting research, Dr. Khan enjoys spending time with his family, hiking, and relaxing at the beach.

  • Yousuf Khan

    Yousuf Khan

    Instructor, Molecular and Cellular Physiology

    BioI am a PhD student in Stanford Biosciences, department of Molecular and Cellular Physiology. I am broadly interested in basic molecular processes that occur in the cell and aim to delineate these mechanisms using biochemistry, molecular biology, bioinformatics and biophysics. I am also available as a consultant for bio-tech ventures.

  • Abha Khandelwal

    Abha Khandelwal

    Clinical Professor, Medicine - Cardiovascular Medicine

    Current Research and Scholarly InterestsCardiovascular disease in Pregnancy
    Valvular Heart Disease
    Cardiomyopathy
    Pericardial disease
    Heart Disease in South Asians
    Women's Cardiovascular Disease

  • Kajal Khanna

    Kajal Khanna

    Clinical Associate Professor, Emergency Medicine
    Clinical Associate Professor (By courtesy), Pediatrics

    Current Research and Scholarly InterestsGlobal pediatric emergency medicine research, educational scholarship, pediatric emergency medical care in low- and middle- income countries and rights-based approaches to health systems development

  • Nasim Sabery Khavari

    Nasim Sabery Khavari

    Clinical Associate Professor, Pediatrics - Gastroenterology

    Current Research and Scholarly InterestsPediatric Gastroenterology, Celiac Disease, Nutrition in Celiac Disease

  • Paul A. Khavari, MD, PhD

    Paul A. Khavari, MD, PhD

    Carl J. Herzog Professor of Dermatology in the School of Medicine

    Current Research and Scholarly InterestsWe work in epithelial tissue as a model system to study stem cell biology, cancer and new molecular therapeutics. Epithelia cover external and internal body surfaces and undergo constant self-renewal while responding to diverse environmental stimuli. Epithelial homeostasis precisely balances stem cell-sustained proliferation and differentiation-associated cell death, a balance which is lost in many human diseases, including cancer, 90% of which arise in epithelial tissues.

  • Sarita Khemani

    Sarita Khemani

    Clinical Associate Professor, Medicine

    Current Research and Scholarly InterestsDr. Khemani’s scholarly work focuses on physiological reserve, biological aging, and healthy longevity, with an emphasis on developing multidimensional measures to better predict resilience, recovery, and health trajectories across the lifespan.

  • Cynthia Khoo

    Cynthia Khoo

    Clinical Associate Professor, Anesthesiology, Perioperative and Pain Medicine

    BioDr. Khoo serves as the Associate Program Director of Career Development for the Stanford Anesthesia Residency and Co-Director of the Division of Global Health Equity. In her residency role, she leads the Anesthesiology Leadership Pathways at Stanford (ALPS), a comprehensive mentorship initiative spanning advocacy, research, community engagement, global health, innovation, medical education and quality improvement.

    A graduate of the University of Pennsylvania’s MD-PhD program, Dr. Khoo completed her residency and regional anesthesia fellowship at Stanford. Her global health work focuses on promoting safe, equitable perioperative care through high-tech education, including immersive reality simulations for crisis management in Tanzania and Guyana. She supports bi-directional partnerships that facilitate resident rotations and host international scholars at Stanford. Her current research focuses on enhancing clinical research quality in low-resource settings across Rwanda, Vietnam, Guyana, and Tanzania. Dr. Khoo specializes clinically in regional, orthopedic, and thoracic anesthesia.

  • Chaitan Khosla

    Chaitan Khosla

    Wells H. Rauser and Harold M. Petiprin Professor and Professor of Chemistry and, by courtesy, of Biochemistry

    Current Research and Scholarly InterestsResearch in this laboratory focuses on problems where deep insights into enzymology and metabolism can be harnessed to improve human health.

    For the past two decades, we have studied and engineered enzymatic assembly lines called polyketide synthases that catalyze the biosynthesis of structurally complex and medicinally fascinating antibiotics in bacteria. An example of such an assembly line is found in the erythromycin biosynthetic pathway. Our current focus is on understanding the structure and mechanism of this polyketide synthase. At the same time, we are developing methods to decode the vast and growing number of orphan polyketide assembly lines in the sequence databases.

    For more than a decade, we have also investigated the pathogenesis of celiac disease, an autoimmune disorder of the small intestine, with the goal of discovering therapies and related management tools for this widespread but overlooked disease. Ongoing efforts focus on understanding the pivotal role of transglutaminase 2 in triggering the inflammatory response to dietary gluten in the celiac intestine.

  • Nitasha Khullar, MD

    Nitasha Khullar, MD

    Clinical Assistant Professor, Medicine - Immunology & Rheumatology

    BioDr. Nitasha Khullar is a board-certified, fellowship-trained rheumatologist at Stanford Health Care. She is also a clinical assistant professor in the Department of Medicine, Division of Immunology and Rheumatology at Stanford University School of Medicine.

    Dr. Khullar specializes in caring for people with autoimmune and inflammatory diseases that affect the joints, muscles, and immune system. She treats conditions like lupus, rheumatoid arthritis, psoriatic arthritis, ankylosing spondylitis, vasculitis, gout and other complex rheumatic disorders. She provides personalized care for each patient, focusing on early diagnosis and working closely with other medical specialists to help manage these diseases. She values shared decision-making and a patient-centric approach to her care.


    Dr. Khullar’s work has been presented at national and international conferences, including the American College of Rheumatology and the American Association of Immunology. She has authored peer-reviewed publications in journals such as Viruses, Molecular Neurobiology, Age (Dordrecht, Netherlands), and Current Treatment Options in Rheumatology.

    She is a member of the American College of Rheumatology.