Stanford University
Showing 5,501-5,550 of 13,005 Results
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Harold Keyserling
Clinical Associate Professor (Affiliated), Rad/Veterans Affairs
Neuroradiologist, Radiology - Diagnostic RadiologyBioHarold Keyserling, MD is a diagnostic radiologist with subspecialty certification in neuroradiology. In addition to his clinical work, Dr. Keyserling is actively engaged in resident education and is a consulting radiologist for the Centers for Disease Control and Prevention (CDC), Division of Global Migration Health.
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Stephanie Tieu Kha
Clinical Assistant Professor, Orthopaedic Surgery
BioDr. Stephanie Kha is a Pediatric Orthopaedic Surgeon and Clinical Assistant Professor in the Department of Orthopaedic Surgery at Stanford University School of Medicine. She is dual-fellowship trained in pediatric limb deformity and reconstruction as well as pediatric orthopedic surgery. She completed her limb deformity fellowship at the International Center for Limb Lengthening in Baltimore, Maryland under the mentorship of Dr. Philip McClure, following a Pediatric Orthopaedic Surgery fellowship at Rady Children's Hospital in San Diego. During her fellowship, she received the Lena Sefton Clark Award by Rady Children's Hospital for outstanding performance in patient care, teaching, and research. She was recently awarded the 2026 Limb Deformity Education scholarship by the Lengthening and Reconstruction Society (LLRS). She completed her orthopaedic surgery residency at Stanford University, her medical education at Case Western Reserve University School of Medicine and her undergraduate degree in Biochemistry from the University of Arizona.
Dr. Kha's research include over 21 peer-reviewed publications which encompasses topics in pediatric limb deformity, physeal injury, trauma, and hip preservation. Nationally, she serves as a peer reviewer for the Journal of Pediatric Orthopaedics and is currently Vice Chair of the Core Curriculum Committee of the Pediatric Orthopaedic Society of North America (POSNA). -
Steve Khachi, M.D.
Adjunct Lecturer, Psychiatry and Behavioral Sciences - Child & Adolescent Psychiatry and Child Development
BioDr. Steve Khachi is a double board-certified child, adolescent, and adult psychiatrist. He is the Founder, CEO, and Medical Director of Mind Study Center (est. 2017) and Mind Pulse Center (est. 2024) in Pasadena, California. Mind Study Center is an integrated outpatient clinic offering psychiatric evaluation, medication management, psychotherapy, neuropsychological evaluation, and transcranial magnetic stimulation (TMS); Mind Pulse Center is an insurance-based clinic specializing in TMS and medication management for treatment-resistant depression.
He serves as Adjunct Lecturer in the Division of Child and Adolescent Psychiatry and Child Development at Stanford University School of Medicine, where he has trained child and adolescent psychiatry fellows in transcranial magnetic stimulation and lectures on developmental psychopathology, psychopharmacology, psychotherapy, and neuroscience, and as Adjunct Clinical Assistant Professor at the Keck School of Medicine of USC, where he supervises child and adolescent psychiatry fellows. His interests include neuromodulation and TMS, precision and measurement-based psychiatry, and the translation of neuroscience into outpatient care.
His research training spans cellular and systems neuroscience, including studies of bipolar disorder using patient-derived induced pluripotent stem cells at UC San Diego and the Salk Institute (with John Kelsoe, M.D., and Fred Gage, Ph.D.), two-photon microscopy and electrophysiology as an HHMI-NIH Research Scholar, and cerebrovascular research at UCSF.
CLINICAL FOCUS: Child and Adolescent Psychiatry; Adult Psychiatry; TMS and Neuromodulation; Treatment-Resistant Depression; Mood Disorders; ADHD; Anxiety Disorders; Precision and Measurement-Based Psychiatry.
TRAINING AND CERTIFICATION: Board Certified, American Board of Psychiatry and Neurology, Child and Adolescent Psychiatry (2016) and Psychiatry (2015). Fellowship, Child and Adolescent Psychiatry, Stanford University (2016), Chief Fellow 2015-2016. Residency, General Psychiatry, UC San Diego (2014). M.D., University of Wisconsin School of Medicine and Public Health (2011). HHMI-NIH Research Scholar, National Institutes of Health (2008-2009). B.S., Biochemistry-Molecular Biology, UC Santa Barbara (2004).
HONORS: Top Doctors, Pasadena Magazine (2018, 2019); Chief Fellow, Stanford University (2015-2016); Trainee Advisory Board, Acta Psychiatrica Scandinavica (2012-2015); PRITE Scholar Award, UC San Diego (2012); Advanced HHMI-NIH Research Scholar Fellowship (2009); Excellence in Research and Scholarly Activity Award, Des Moines University (2007).
SELECTED PUBLICATIONS: Chang K, Hall R, Khachi S, Howe M, Singh M. Bipolar and Mood Disorders in Adolescents. In: Treating Adolescents, 2nd ed. 2014:223-51. | Khachi S, Gubbels SP, Robinson RA, Hansen MR. Ganglion Cyst Presenting as an External Auditory Canal Mass. Otolaryngol Head Neck Surg. 2011;144(1):131-2. | Zhu W, Khachi S, et al. Upregulation of EMMPRIN after permanent focal cerebral ischemia. Neurochem Int. 2008;52:1086-91. | Khachi S, Zhu Y, Yang GY. Preparation and analysis of endothelial progenitor cells associated with angiogenesis. Methods Mol Biol. 2010;621:139-48.
PROFESSIONAL MEMBERSHIPS: American Academy of Child & Adolescent Psychiatry; American Psychiatric Association; American Medical Association.
WEB: mindstudycenter.com | mindpulsecenter.com -
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
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
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)
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.
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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
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.
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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
Clinical Associate Professor, Emergency Medicine
Clinical Associate Professor (By courtesy), PediatricsCurrent 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
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Bayan Kharrat
Postdoctoral Scholar, Developmental Biology
BioDr. Bayan Kharrat is a postdoctoral researcher in the Goins Lab at Stanford University School of Medicine, where she studies the mechanisms governing fate commitment in hematopoietic stem and progenitor cells in Drosophila, with a focus on identifying key regulatory factors involved in this process.
Dr. Kharrat earned her Ph.D. in Biology from the University of Szeged and conducted her graduate research at the HUN-REN Biological Research Centre in Szeged, where she investigated the dual role of Headcase, an imaginal cell factor, in maintaining progenitor cells in the larval lymph gland. Her expertise spans Drosophila genetics, developmental biology, molecular biology, and confocal microscopy. -
Aditi Khatpe
Postdoctoral Scholar, Pathology
BioAs a Postdoctoral Fellow, I study breast cancer progression and invasion. My research leverages high-dimensional spatial technologies to map cellular architecture and uncover how tumor–stroma interactions influence disease progression. Ultimately, my goal is to translate these insights into strategies that improve diagnosis and treatment.
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Nasim Sabery Khavari
Clinical Associate Professor, Pediatrics - Gastroenterology
Current Research and Scholarly InterestsPediatric Gastroenterology, Celiac Disease, Nutrition in Celiac Disease
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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.
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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.
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Amy Khokhar
Temporary Employee, Medicine - Med/Stanford Prevention Research Center
Casual - Non-Exempt, Stanford Center on LongevityCurrent Role at StanfordStanford Lifestyle Medicine Program Administrator
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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
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.
