School of Medicine
Showing 5,401-5,450 of 12,875 Results
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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.
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Timothy Keyes
MD Student, expected graduation Spring 2026
Ph.D. Student in Cancer Biology, admitted Winter 2018
MSTP StudentBioTimothy is an MD/PhD student studying cancer biology and biomedical informatics at the Stanford University School of Medicine. He is a joint member of Kara Davis's laboratory in the Department of Pediatrics and Garry Nolan's Laboratory in the Department of Pathology.
As a biomedical data scientist, Timothy's research focuses on the application of machine learning to single-cell data analysis in the context of pediatric leukemia. Through the use of emerging, high-throughout single-cell technologies such as mass cytometry and sequence-based cytometry, Timothy's research is designed to build predictive models of patient outcomes - such as relapse or minimal residual disease (MRD) - at the point of diagnosis. To do so, he uses a variety of computational tools including generalized linear models, clustering, and deep learning. In addition, his work prioritizes constructing easy-to-use, highly-reproducible data analysis pipelines that can be shared as open-source tools for the scientific community.
Outside of science, Timothy has a longstanding interest in human rights and social justice work among members of the lesbian, gay, bisexual, transgender, and queer (LGBTQ+) community. He currently serves as the resident data scientist for the Medical Student Pride Alliance (MSPA), a 501(c)(3) non-profit organization that advocates for diversity, equity, and inclusion for LGBTQ+ medicals students in medical schools across the United States. As a data scientist at MSPA, Timothy analyzes and visualizes data to guide MSPA's strategic decision-making as well as for academic publication. He also advises and mentors other student members of MSPA performing data analysis in Python and R.
In recognition of his accomplishments, Timothy has received several institutional and national award for both research and advocacy. These include a National Research Service Award (NRSA) from the National Cancer Institute, a Junior Leadership Award from the Building the Next Generation of Academic Physicians (BNGAP) LGBT Workforce, Stanford Medicine’s Integrated Strategic Plan Star Award, and a Point Foundation Scholarship. -
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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Steve Khachi, M.D.
Adjunct Lecturer, Psychiatry and Behavioral Sciences - Child & Adolescent Psychiatry and Child Development
BioDr. Steve Khachi is a double-board-certified psychiatrist specializing in child, adolescent, and adult psychiatry. He is the Founder and Medical Director of the Mind Study Center in Pasadena, California—an integrated mental health clinic offering psychotherapy, medication management, neuropsychological evaluations, and transcranial magnetic stimulation (TMS). His clinic emphasizes interdisciplinary collaboration, clinical excellence, and innovation in care delivery.
Dr. Khachi serves as Adjunct Clinical Faculty at both Stanford University and the University of Southern California (USC), where he teaches and supervises child psychiatry fellows and residents. He is passionate about education and mentorship, and is committed to advancing the next generation of clinicians.
Dr. Khachi completed his Child and Adolescent Psychiatry Fellowship at Stanford University, where he served as Chief Fellow. He completed residency in General Psychiatry at UC San Diego, received his medical degree from the University of Wisconsin School of Medicine and Public Health, and earned his B.S. in Biochemistry–Molecular Biology from UC Santa Barbara. His additional training includes research fellowships at UCSF and the NIH/Howard Hughes Medical Institute. -
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 in spatial omics, 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 behavior. 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
BioDr. Sarita Khemani is a Clinical Associate Professor of Medicine at Stanford University and a Hospital Medicine physician specializing in the perioperative care of surgical patients. Her clinical expertise focuses on prevention, early detection and management of medical complications in the perioperative setting. Her broader interests include enhancing cognitive and physical resilience and promoting long-term healthspan.
Dr. Khemani has served as Director of the Perioperative Medicine Rotation for both medical students and residents. She was honored with the Department of Medicine’s Excellence in Teaching Award and remains committed to supporting the education and growth of future physicians.
Dr. Khemani is the founder and co-director of the Stanford Medicine Clinical Summer Internship (SMCSI), a globally recognized program that exposes premedical students to the clinical and academic world of medicine. Under her leadership, the program has expanded access through numerous scholarships for underrepresented and minority students, with a mission to empower future leaders in healthcare.
An invited speaker at national and international medical meetings, Dr. Khemani has also spoken at the Stanford Neurosurgery Grand Rounds and delivered the keynote address at the Stanford Physician Assistant Program’s graduation ceremony. She has been featured on U.S. media platforms and international television as a guest expert.
Dr. Khemani is a member of the American College of Physicians, Society of Hospital Medicine and currently serves on the Stanford Hospital Pharmacy and Therapeutics Committee and the Hospital Medicine Wellness Committee.
