School of Medicine
Showing 2,201-2,250 of 2,404 Results
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Maria Norma Villalon Landeros
Clinical Assistant Professor, Medicine - Primary Care and Population Health
BioDr. Norma Villalon's path to medicine reflects a journey of perseverance and community service. Born and raised in rural Guanajuato, Mexico, her early years were shaped by strong family bonds and a deep appreciation for community care, despite financial challenges. Before immigrating to the United States at 18, she dedicated herself to adult education through INEA, teaching literacy and basic education to members of her community. This early experience fostered her commitment to serving diverse populations and understanding their unique needs. As a first-generation professional from an immigrant background, Dr. Villalon brings a unique perspective to medicine, informed by her profound understanding of underserved communities. Her journey from a small Mexican village to becoming a physician exemplifies the power of determination and the importance of accessible healthcare. Through her work, she continues to advocate for equitable medical care while actively mentoring and supporting the next generation of physicians from underrepresented backgrounds.
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Kathan Vollrath, MD, MPH
Clinical Associate Professor, Medicine - Primary Care and Population Health
BioDr Vollrath is an internal medicine primary care physician at Stanford Internal Medicine Clinic. She provides asynchronous message-based care via myHealth, including inbox coverage for faculty on vacation. She is a QuEST scholar, studying the implementation of this new service.
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Heather Wakelee
Winston Chen and Phyllis Huang Professor
Current Research and Scholarly InterestsDr. Wakelee's research is focused on clinical trials and translational efforts in patients with lung cancer and other thoracic malignancies such as thymoma and thymic carcinoma. Other interests include translation projects in thoracic malignancies and collaborations with population scientists regarding lung cancer questions.
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Jared Andrew Wallace
Clinical Assistant Professor, Medicine - Hematology
BioDr. Wallace is a Clinical Assistant Professor in the Division of Hematology at Stanford University School of Medicine. He earned his MD and PhD in Molecular Biology from University of Utah in 2020 where he studied the role of non-coding RNAs in promoting the development of myeloid malignancies. He completed his Internal Medicine residency and fellowship in Hematology and Medical Oncology at Stanford. He specializes in the diagnosis, evaluation and treatment of hematologic malignancies, with particular emphasis on multiple myeloma and acute myeloid leukemia. His current research is focused on understanding the role of the bone marrow microenvironment in promoting the development and progression of hematologic malignancies.
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Aileen Xinqian Wang
Clinical Assistant Professor, Medicine - Nephrology
BioPhilosophy of Care: dedicated to clear communication and teamwork approach to provide the best care possible to all patients.
Clinical Interests: focus on individualized evaluation/tailoring of clinical immunosuppression, management of mineral bone disease post kidney transplant, and the prevention/treatment of COVID-19 in kidney transplant recipients.
Research/Academic Interests: focus on optimization of immunosuppression regimen, mineral bone disease in kidney transplant recipients, delayed graft function outcomes, and COVID-19 infection in kidney transplant recipients. -
Paul J. Wang, MD
John R. and Ai Giak L. Singleton Director, Professor of Medicine (Cardiovascular Medicine) and, by courtesy, of Bioengineering
Current Research and Scholarly InterestsDr. Wang's research centers on the development of innovative approaches to the treatment of arrhythmias, including more effective catheter ablation techniques, more reliable implantable devices, and less invasive treatments. Dr. Wang's clinical research interests include atrial fibrillation, ventricular tachycardia, syncope, and hypertrophic cardiomyopathy. Dr. Wang is committed to addressing disparities in care and is actively involved in increasing diversity in clinical trials.
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Samantha Wang
Clinical Associate Professor, Medicine
BioDr. Samantha Wang is a Clinical Associate Professor in the Division of Hospital Medicine at Stanford University School of Medicine. She received her medical and masters in health sciences degrees from Yale School of Medicine and completed her Internal Medicine residency at Stanford, where she served as Chief Resident. She practices as a hospitalist at Stanford Health Care and works closely with residents and students in clinical teaching and mentorship. Her clinical focus is in patient-centered communication, and she directs inpatient implementation of the Serious Illness Care Program while studying strategies to improve the quality and impact of serious illness conversations for hospitalized patients.
Dr. Wang’s academic work spans health equity, medical education, and faculty development. She leads national collaborations advancing scholarship and advocacy in health equity and has received innovation grants to develop curricula addressing bias, structural racism, and diagnostic equity in clinical care. Her “5-Minute Moment for Racial Justice” curriculum has been disseminated nationally and internationally through Stanford CME and YouTube and translated into multiple languages. She received the American Board of Internal Medicine Professionalism Article Prize (2025) for her scholarship on professionalism and advancing health equity.
Dr. Wang leads faculty development initiatives within the Division of Hospital Medicine that support mentorship, scholarship, and community building. Her work focuses on creating environments where faculty can thrive academically while fostering inclusive learning communities for the next generation of physicians. In recognition of these efforts, she received the Stanford University Women’s Forum Inspiring Early Academic Career Award. -
Taia T. Wang, MD, PhD, MSCI
Associate Professor of Medicine (Infectious Diseases) and of Microbiology and Immunology
Current Research and Scholarly InterestsLaboratory of Mechanisms in Human Immunity and Disease Pathogenesis
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Katherine T. Ward, MD
Clinical Professor, Medicine - Primary Care and Population Health
BioDr. Ward is the Chief of the Geriatrics Section in the Department of Medicine, Division of Primary Care and Population Health at Stanford University School of Medicine, and a Clinical Professor of Medicine. In this leadership role, she supervises program leaders across outpatient, inpatient, and skilled nursing facility settings, bringing them together to provide longitudinal, coordinated care to older adults across the healthcare continuum.
Dr. Ward is a fellowship-trained geriatrician with Stanford in Palo Alto, California, and is board certified in geriatric medicine, hospice and palliative medicine, and internal medicine. Her clinical practice spans all care settings—outpatient clinics, hospitals, and skilled nursing facilities—with a focus on managing the critical transitions between them. She specializes in comprehensive care for older adults, including dementia care, palliative care, geriatric assessment, and best practices in nursing home care. Dr. Ward draws on her extensive experience to teach and implement evidence based models that support care for older adults. Dr. Ward's research interests include early detection of dementia in vulnerable populations, dementia care support programs, and geriatric assessment in diverse populations.
She has published her research in peer-reviewed journals including the Journal of the American Geriatrics Society; The American Journal of Geriatric Pharmacotherapy; The Journal of Nutrition, Health & Aging; and the Journal of Palliative Medicine. She has served as an ad hoc reviewer for several journals, including Geriatrics, and has presented posters at annual meetings of the American Geriatrics Society and the Society of General Internal Medicine.
Dr. Ward is a member of the American College of Physicians and the American Geriatrics Society. -
Erin Watson, PsyD, ABPP
Clinical Associate Professor, Medicine - Gastroenterology & Hepatology
BioDr. Erin Watson is a board-certified clinical health psychologist and Clinical Associate Professor in the Division of Gastroenterology & Hepatology at Stanford University School of Medicine. She is a member of Stanford Health Care’s GI Behavioral Medicine program, where she specializes in the intersection of psychological health, behavioral science, and gastrointestinal and liver disease.
Dr. Watson’s clinical work focuses on helping patients navigate the emotional, behavioral, and lifestyle factors that influence medical illness. Her areas of expertise include health anxiety, stress and symptom management, health-behavior change, adjustment to chronic conditions, and the emerging specialty of psycho-hepatology. She uses practical, evidence-based approaches—including cognitive behavioral therapy, acceptance and commitment therapy, mindfulness-based interventions, and motivational interviewing—with lifestyle-medicine strategies to support long-term health and resilience. Her goal is to help patients feel more informed, supported, and empowered throughout their care.
In addition to her clinical work, Dr. Watson is engaged in research to advance behavioral treatments for chronic pain and develop new psychological interventions for individuals living with chronic liver disease. She is a co-investigator on a National Institutes of Health–funded study examining effective treatment options for veterans with chronic pain and addiction. Her scholarly work has been published in peer-reviewed journals and presented at regional and national conferences, including annual meetings of the American Psychological Association.
Dr. Watson is a Fellow of the American Academy of Clinical Health Psychology and a member of the American Psychological Association, the Society for Health Psychology (Division 38), the Society of Behavioral Medicine, the American Association for the Study of Liver Diseases, and the Rome Foundation. -
Annika M. Weber
Postdoctoral Scholar, Gastroenterology
BioAnnika is a postdoctoral scholar in the Spencer Lab studying how gut microbes metabolize prebiotic fibers to produce bioactive metabolites linked to lowering disease risk. She holds an MS in Human Nutrition from the University of Sheffield and a PhD in Food Science and Human Nutrition from Colorado State University. Her work integrates multi-omic approaches to map diet-microbe-metabolite relationships. Annika aims to translate these mechanistic insights into microbiome-informed dietary strategies for reducing chronic diseases.
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Mike Tzuhen Wei
Clinical Assistant Professor, Medicine - Gastroenterology & Hepatology
BioDr. Wei was born and raised in Taipei, Taiwan. He went to Stanford for his undergraduate studies in Biology and earned his medical degree at Weill Cornell Medical College. Unable to stay far from the Bay Area, he returned to Stanford where he completed his residency in internal medicine and subsequently his fellowship in gastroenterology. Dr. Wei has specific interests in colorectal cancer and Barrett’s esophagus surveillance as well as reflux diagnosis and management. He has an interest in endoscopic resection of large polyps and had received training under Dr. Shai Friedland, a world expert in this field. Dr. Wei work focuses on evaluating new tools, technologies and techniques in gastrointestinal cancer surveillance and management. He has been involved in running several trials in endoscopic management of polyps and evaluating artificial intelligence applications in gastroenterology. His work has been published in American Journal of Gastroenterology, Gastrointestinal Endoscopy, Clinical Endoscopy, VideoGIE, and Digestive Diseases and Sciences. He was formerly an Associate Editor for the ACG Case Report Journal (2020-2022) and was on the Board of the Northern California Society of Clinical Gastroenterology. When not in clinic or in endoscopy, Dr. Wei enjoys spending time with his family. He and his family enjoy traveling and exploring new restaurants.
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Ann Weinacker
Professor of Medicine (Pulmonary and Critical Care)
Current Research and Scholarly InterestsDr. Weinacker's research interests center around ICU outcomes. Her specific interests include primary graft dysfunction in lung transplant recipients.
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Eva Weinlander
Clinical Professor, Medicine - Primary Care and Population Health
Current Research and Scholarly InterestsWomen's Health
Mind Body Medicine
Chronic Disease Management -
Ashira Weinreich
Masters Student in Community Health and Prevention Research, admitted Autumn 2025
BioAshira is a National Science Foundation Graduate Research Fellow (NSF-GRFP), completing her MS in Community Health and Prevention Research at Stanford University (2025 - June 2026), and a Community Engaged Scholar at Stanford's Haas Center for Public Service. Her research examines how diverse bio-cultural systems inform community health in times of sociocultural and ecological change. By linking cyclical patterns in health practices with seasonality, nutrient intake, and medicinal plant use, Ashira explores how village communities adapt to climatic and environmental variability. As a Fulbright Research Fellow in Nepal (2024-2025), Ashira interviewed community members, organized and facilitated workshops in 12 villages ranging in elevation from 6,500ft to 13,000ft, engaging over 200 villagers. She believes that anticipatory capacity is important in developing resilience in Nepal’s high-altitude Himalayan regions. Ashira is committed to a collaborative, community-centered approach to research, emphasizing the importance of reciprocity and giving back to the community.
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Chad S. Weldy, M.D., Ph.D.
Instructor, Medicine - Cardiovascular Medicine
Current Research and Scholarly InterestsAs a physician-scientist I work to understand the genetic basis of cardiovascular disease and the transcriptional and epigenomic mechanisms of atherosclerosis. My work is focused across four main areas of cardiovascular genetics and mechanisms of coronary artery disease and smooth muscle biology:
1.Vascular smooth muscle specific ADAR1 mediated RNA editing of double stranded RNA and activation of the double stranded RNA receptor MDA5 in coronary artery disease and vascular calcification
2.Defining on single cell resolution the cellular and epigenomic features of human vascular disease across vascular beds of differing embryonic origin
3.CRISPRi screening with targeted perturb seq (TAPseq) to identify novel CAD genes in human coronary artery smooth muscle cells
4.Investigation of the epigenetic and molecular basis of coronary artery disease and smooth muscle cell transition in mice with conditional smooth muscle genetic deletion of CAD genes Pdgfd and Sox9
My work is focused on discovery of causal mechanisms of disease through leveraging human genetics with sophisticated molecular biology, single cell sequencing technologies, and mouse models of disease. This work attempts to apply multiple scientific research arms to ultimately lead to novel understandings of vascular disease and discover important new therapeutic approaches for drug discovery.
First Author Manuscripts for this work:
•Weldy, C. S., et al. (2025). Smooth muscle cell expression of RNA editing enzyme ADAR1 controls activation of RNA sensor MDA5 in atherosclerosis. (2025). Nature Cardiovascular Research. 1-17, PMID: 40958051, doi: 10.1038/s44161-025-00710-5
•*Selected as finalist for Louis N. and Arnold M. Katz Basic Science Research Prize from the American Heart Association, finalist competition November 16, 2024, Chicago
•Work was highlighted in the Stanford Department of Medicine News
https://medicine.stanford.edu/news/current-news/standard-news/RNA-editing.html
•Weldy, C.S., et al. (2025). Epigenomic landscape of single vascular cells reflects developmental origin and disease risk loci. Molecular Systems Biology. 1-25, PMID: 40931195, doi:10.1038/s44320-025-00140-2.
•*Selected for the cover of November 2025 edition of Molecular Systems Biology
Grant funding received for this work:
Mentored Clinical Scientist Research Career Development Award (K08)(NIH/NHLBI, 1 K08 HL167699-01), August, 2023 – July 2028. PI: Weldy, Chad
•Title of proposal: “ADAR Mediated RNA editing is a causal mechanism in coronary artery disease”.
•Activated 08/01/2023
•$850,000 over 5 years
Career Development Award, American Heart Association (AHA CDA)(23CDA1042900), July, 2023 – June, 2026. PI: Weldy, Chad
•Title of proposal: “Linking RNA editing to coronary artery calcification and disease”
•Activated 07/01/2023
•$231,000 over three years
NIH Loan Repayment Program (LRP) Award (NIH/NHLBI) Renewal Award, July, 2023. PI: Weldy, Chad
•Title of proposal: “RNA editing is a causal mechanism of coronary artery disease”
Ruth L. Kirschstein National Research Service Award (NRSA) Individual Postdoctoral Fellowship (F32) (NIH/NHLBI, 1 F32 HL160067-01), July, 2021 – June 2023 (Completed). PI: Weldy, Chad
• Titled, “A transcriptional network which governs smooth muscle transition is mediated by causal coronary artery disease gene PDGFD”
•*Received perfect score with impact score 10, 1st percentile
NIH Loan Repayment Program (LRP) Award (NIH/NHLBI), July, 2021. PI: Weldy, Chad
•Title of proposal: "Single cell transcriptomic and epigenomic features of human atherosclerosis".
•This will award up to $100,000 towards student loans over the next 24 months with opportunity for renewal after 24 months.
