School of Medicine
Showing 101-200 of 285 Results
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Michele Jehenson
Clinical Associate Professor, Anesthesiology, Perioperative and Pain Medicine
BioDr Jehenson is an avid lover of wildlife and the outdoors. She finds peace and balance in the mountains, summer and winter.
She lives in Los Gatos , CA where she maintains a private practice at the Bay Area Pain and Wellness Center.
She is a commentators on Health Revolution Radio and is an advocate for integrative, non-surgical treament for facial pain. -
Michael Jeng
Professor of Pediatrics (Hematology/Oncology)
Current Research and Scholarly InterestsResearch interests focus on: 1) histiocytic disorders, such as Langerhans cell histiocytosis (LCH) and hemophagocytic lymphohistiocytosis (HLH), and 2) vascular anomalies and malformations.
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Susy Jeng
Clinical Associate Professor, Pediatric Neurology
Clinical Associate Professor, PediatricsBioDr. Susy Jeng is Clinical Associate Professor of Neurology at Stanford Children’s Hospital at Stanford University. Dr. Jeng received her A.B. at Harvard College and M.D. at the University of California, San Diego. She completed her pediatrics residency at University of California, San Francisco and is board-certified in pediatrics. After practicing general pediatrics for two years, she returned to UCSF for neurology residency. Upon completion of her residencies, she joined the faculty at Stanford as a general child neurologist with a special interest in medical education. She is the site director for the Stanford medical student neurology clerkship and the pediatric neurology liaison to the Stanford pediatrics residency program.
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Erik Allen Jensen
Associate Professor of Pediatrics (Neonatal and Developmental Medicine)
BioBronchopulmonary dysplasia (BPD) is a common and severe complication of very preterm birth. Dr. Jensen’s research seeks to improve the long-term respiratory health of premature infants through: (1) clinical and translational studies that aim to develop evidence-based strategies to prevent and treat BPD; (2) novel characterization of disease severity and phenotypes in BPD; and (3) application of health services research techniques to investigate the association between hospital-level factors and neonatal morbidity and mortality.
Dr. Jensen’s research is supported by grant funding from the National Heart Lung and Blood Institute (NHLBI), the National Institute of Child Health and Human Development (NICHD), and the American Lung Association (ALA). He is a member of the International BPD Collaborative and the International Neonatal Consortium (INC) BPD working group. -
Jorgen Arendt Jensen
Visiting Professor, Radiology - Rad/Molecular Imaging Program at Stanford
BioI am a professor of Biomedical Signal Processing at the Department of Health Technology (DTU Health), Technical University of Denmark (www.dtu.dk). My main interests are the application of digital signal processing to medical ultrasound, especially synthetic aperture imaging, vector flow imaging, super-resolution, GPU-based beamforming and implementation, and ultrasound simulation.
I received the M.Sc. in electrical engineering in 1985, the Ph.D. in 1989 for work on deconvolution, and the Dr. Techn. degree in 1996 for my work on blood velocity estimation in the book: "Estimation of Blood Velocities Using Ultrasound, A Signal Processing Approach", which was published by Cambridge University Press in 1996. I have been a full professor at DTU since 1993, and I have been a visiting scientist at Duke University, North Carolina, Stanford University, California, and the University of Illinois at Urbana-Champaign, all in the US. I became an IEEE Fellow in 2012.
I have founded and headed the Center for Fast Ultrasound Imaging (www.cfu.dtu.dk) since 1998. Currently, I am a visiting Professor in the Department of Radiology at Stanford University, CA, USA, courtesy of Professors Katherine Ferrara and Jeremy Dahl, until August 2026. I will be working here on our super-resolution method, SURE, using the Stanford large-element arrays for the acquisition of clinical data. I am also writing a book on advanced ultrasound imaging, drawing on my 40 years in the field.
Link to home page: https://home.healthtech.dtu.dk/jaj/, which has a publication list. -
Kristin Jensen
Professor of Pathology
Current Research and Scholarly InterestsI am a clinical translational investigator with a primary interest in breast cancer biology, and the use of investigational and clinical ancillary techniques such as gene and tissue microarray analysis and immunohistochemistry in the diagnosis and prognosis of this disease. As a practicing cytopathologist, I also have an interest in improving the fine needle aspiration biopsy diagnosis of breast lesions, again using immunohistochemistry and gene expression analysis as adjuncts to cytomorphology.
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Michael Jensen, MD, PhD
Clinical Assistant Professor, Neurosurgery
BioDr. Michael Jensen is a neurosurgeon at Stanford Health Care. He also serves as a clinical assistant professor and director of endoscopic spine surgery in the Department of Neurosurgery, Division of Spine Surgery at Stanford University School of Medicine.
Dr. Jensen specializes in endoscopic and minimally invasive spine surgery for degenerative conditions, herniated discs, spinal stenosis, and spine-related pain, with experience in more than 2,000 procedures throughout his career. As Director of Endoscopic Spine Surgery at Stanford, he focuses on motion-preserving techniques that shorten recovery and restore function. He also employs advanced imaging and meticulous surgical planning to make spinal fusion safer and promote lasting healing. Dr. Jensen’s care philosophy emphasizes precision, collaboration, and open communication—ensuring that every patient understands their options and feels confident in their care.
As a physician-scientist, Dr. Jensen focuses his research on improving the quality, efficiency, and effectiveness of spine care. He has studied how cost-sharing policies, treatment timing, and prescribing patterns affect outcomes for patients with neck and back pain. He has also explored the use of machine learning and predictive modeling to guide clinical decision-making in neurosurgery. Currently, Dr. Jensen works with the Endoscopic Spine Research Group to improve patient pain control and functional recovery after endoscopic spine surgery.
Dr. Jensen has presented his work at national meetings, including those of the Congress of Neurological Surgeons and the Society of Lateral Access Surgery. He has authored numerous peer-reviewed publications in journals such as The Spine Journal, JAMA Network Open, and World Neurosurgery. His research spans clinical care, health economics, and translational science, reflecting his commitment to advancing neurosurgical practice and improving patient outcomes.
Dr. Jensen is a member of the American Association of Neurological Surgeons. -
Livnat Jerby
Assistant Professor of Genetics
Current Research and Scholarly InterestsCombining and advancing functional genomics, cell engineering, synthetic biology, AI, and basic immunology to uncover, decode, rewire, and develop mechanisms to selectively eliminate and reprogram disease-driving cells as a foundation for disease treatment and prevention.
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Hilary Jericho
Clinical Associate Professor, Pediatrics - Gastroenterology
Current Research and Scholarly InterestsI am a clinical associate professor of pediatric gastroenterology and the Inaugural Medical Director of the Celiac Disease Program at the Lucile Packard Children’s Hospital at Stanford whose clinical practice and research have an emphasis on the diagnosis and management of celiac disease. I was appointed the Director of Pediatric Clinical Research at the University of Chicago Celiac Disease Center in 2014. I am deeply involved in both local community and national professional societies serving as the Director of the Chicagoland Children’s Health Alliance (CCHA) endoscopy committee and am a member of the CCHA celiac committee, the North American Society for Pediatric Gastroenterology, Hepatology and Nutrition (NASPGHAN) celiac special interest group, CeliacKids (a pediatric multi-center celiac research focused collaborative), the Standards-Based Active Guideline Environment (a committee responsible for the establishment of guidelines for accommodating children with celiac disease within school settings across the United States), and the NASPGHAN Endoscopy committee. My clinical work and research focus on pediatric celiac disease (CeD) and have resulted in numerous publications, peer-reviewed articles, and book chapters. This research has also helped to establish myself as an expert in the field of pediatric celiac disease leading to invitations to speak and be a moderator at both local and national meetings, including the internationally attended University of Chicago Celiac Disease Center educational preceptorship programs, the NASPGHAN annual meeting and Beyond Celiac. I have additionally been called up to provide celiac specific journal reviews as well as expert opinions to leading publications, including US News and World Report, Reader’s Digest and Reuter’s. The current application builds logically on my prior work in the field of pediatric celiac disease for which I have successfully administered the projects (staffing, research coordination, budgeting, data analysis and manuscript creation). In summary, I have the expertise, leadership, training, and motivation necessary to successfully carry out the proposed research projects.
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John Jay Jernick
Clinical Associate Professor, Medicine - Primary Care and Population Health
Current Research and Scholarly InterestsHealth services research; guided self-care; health, education; outcome oriented decision processes.
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Aleesha Jethwa
Postdoctoral Scholar, Anesthesiology, Perioperative and Pain Medicine
BioDr Jethwa is a postdoctoral fellow working in Dr Sultan's lab, within the Obstetric Anesthesiology Department. She is funded by the R90 HEAL/Pain Cohort grant. Her research focuses on the peripartum period and how targeted interventions can alter recovery trajectories.
Dr Jethwa previously worked as a resident anesthesiologist in the UK for 7 years including rotations in Internal Medicine, Obstetrics, and Pain Medicine and completed a Masters in Education at the University of Pennsylvania focused on medical education. -
Rathinaraja Jeyaraj
Postdoctoral Scholar, Pathology
BioMy research interests revolve around unboxing, manipulating, and applying machine and deep learning algorithms to address computer vision challenges. Currently, I focus on histopathology image analytics using contrastive learning and multi-modal representation learning (image and text).
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Hanlee P. Ji
Professor of Medicine (Oncology) and, by courtesy of Electrical Engineering
Current Research and Scholarly InterestsCancer genomics and genetics, translational applications of next generation sequencing technologies, development of molecular signatures as prognostic and predictive biomarkers in oncology, primary genomic and proteomic technology development, cancer rearrangements, genome sequencing, big data analysis
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Lu Ji
Postdoctoral Scholar, Radiation Biology
BioDriven by the enthusiasm and curiosity about life science and human disease, I have been working on cancer research for more than 5 years. I focus on developing novel therapeutic targets from tumor microenvironment and uncovering mechanisms of tumor progression, especially with expertise in gastrointestinal tumor biology and tumor microenvironment analysis. Now I'm digging into a field about finding a way to empower immunotherapy by appropriately utilizing radiation therapy.
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Xiaolin Jia
Clinical Assistant Professor, Medicine
Current Research and Scholarly InterestsQuality improvement, palliative care
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Can "Angela" Jiang
Clinical Associate Professor, Medicine - Primary Care and Population Health
BioDr. Can "Angela" Jiang is a board certified family physician who enjoys caring for the whole family, from newborn care to geriatrics. She has special interests in women's health, adolescent health, pediatrics, and medical student education. She specializes in primary care procedures including gynecologic procedures.
Prior to medical school, Dr. Jiang was a high school biology teacher in Chicago with Teach for America and loves combining her passions for teaching and medicine on a daily basis at Stanford Family Medicine. Dr. Jiang also teaches residents at the Stanford Health Care-O'Connor Hospital residency program and is the director of the O’Connor-Stanford Leaders in Education Residency Program (OSLER). Dr. Jiang is also passionate about community outreach and works with the Stanford Youth Diabetes Coaches Program.
Outside of clinic, she enjoys hiking, reading, group fitness classes, traveling, and running after her two young kids. -
Feng Jiang
Postdoctoral Scholar, Genetics
BioI am a postdoctoral researcher working on RNA editing.
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Mi Jiang
Executive Compensation Manager, SoM Finance - Faculty Compensation
BioSpecialized in physician compensation and executive compensation.
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Nancy Jiang, MD
Clinical Associate Professor, Otolaryngology (Head and Neck Surgery)
BioDr. Jiang is a board-certified, fellowship-trained laryngologist with Stanford Health Care. She is also a clinical associate professor in the Department of Otolaryngology – Head and Neck Surgery, Division of Laryngology at Stanford University School of Medicine. Dr. Jiang completed a fellowship in laryngology at Stanford University School of Medicine.
Dr. Jiang specializes in helping patients with all conditions affecting the throat and neck, including vocal cord disorders, hoarseness, chronic cough, and swallowing difficulties. She is skilled at treating even the most complex conditions using the latest techniques and advanced technology. Offering surgical and nonsurgical treatments, Dr. Jiang is passionate about tailoring each care plan to meet the needs of her patients.
Her research interests include outcomes in vocal fold paralysis caused by intubation and from unknown causes (idiopathic). She also studies practice patterns of otolaryngologists in the United States. She has evaluated the effectiveness of in-person versus telemedicine care in otolaryngology and the disparities in speech therapy for voice disorders among English-speaking and non-English-speaking patients. Dr. Jiang has also explored how using a digital otoscope can reduce the use of antibiotics in children with ear infections.
Dr. Jiang’s articles have appeared in many peer-reviewed publications, including Laryngoscope, Otology and Neurotology, and American Journal of Otolaryngology. She edited a chapter on gross and radiographic anatomy in Anesthesiology and Otolaryngology. She has also reviewed articles for Laryngoscope and Annals of Otology, Rhinology & Laryngology.
Dr. Jiang has presented her research findings in the United States and Canada. She has been invited to speak at dozens of conferences about a range of topics affecting the ears, nose, and throat. She has served as principal investigator on many studies, including how using artificial intelligence can improve patient care and how to reduce opioid use following otolaryngology surgery.
Dr. Jiang is a member of the American Academy of Otolaryngology - Head and Neck Surgery, the Society of University Otolaryngologists, and the American Broncho-Esophagological Association. -
Shirley Jiang, MD
Clinical Assistant Professor, Medicine - Pulmonary, Allergy & Critical Care Medicine
BioDr. Shirley Jiang is a fellowship-trained, board-certified allergist and immunologist with the Stanford Health Care Allergy, Asthma, and Immunodeficiency Clinic in Atherton. She is also a clinical assistant professor of allergy and immunology in the Department of Medicine, Division of Pulmonary, Allergy & Critical Care Medicine at Stanford University School of Medicine.
Dr. Jiang diagnoses and treats a wide range of conditions, including allergies, asthma, eczema, hives, and immunodeficiencies. She specializes in food allergies, medication allergies such as those to penicillin and other antibiotics, and chemotherapy allergies. For each of her patients, she offers a comprehensive care plan tailored to the individual.
Dr. Jiang’s research interests include evaluating quality-of-life issues related to food allergies, with an emphasis on underserved populations. She is also working with her colleagues to build out and validate a novel chemotherapy desensitization program for patients with cancer who have allergic reactions to chemotherapy.
Dr. Jiang has published her research in peer-reviewed journals such as Allergy, Frontiers in Immunology, The Journal of Allergy and Clinical Immunology: In Practice, and Clinical Reviews in Allergy and Immunology. She has also presented to her peers at international, national, and regional meetings, including the annual meetings of the American Academy of Allergy, Asthma & Immunology (AAAAI), the American College of Allergy, Asthma & Immunology (ACAAI), and the Allergy, Asthma & Immunology Foundation of Northern California (AAIFNC).
Dr. Jiang is a member of the AAAAI and the ACAAI. She serves as a member of the ACAAI Drug Allergy Committee, working on building out resources for penicillin allergy delabeling for allergists and primary care doctors. She also serves as a member of the AAAAI Adverse Reactions to Drugs, Biologicals, and Vaccines Committee and Adverse Reactions to Foods Committee. -
Yan Jiang
Clinical Assistant Professor, Medicine - Gastroenterology & Hepatology
BioDr. Yan Jiang is a gastroenterologist specializing in esophageal and motility disorders including gastroesophageal reflux disease (GERD), eosinophilic esophagitis, achalasia, etc. He obtained his medical degree at New York University before completing internal medicine residency and gastroenterology fellowship at Stanford. While at Stanford, Dr. Jiang also received a master's degree in clinical research and epidemiology. His main research interests are in esophageal disorders as well as dietary interventions and technological applications to GI practice.
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Yi Jiang
Clinical Assistant Professor, Medicine - Gastroenterology & Hepatology
BioDr. Jiang is a board-certified gastroenterologist and pancreatologist. Her clinical interests include chronic abdominal pain, acute and chronic pancreatitis, pancreatic cysts, exocrine pancreatic insufficiency, and pancreatic cancer screening. She is committed to delivering evidence-based, personalized care focused on optimizing outcomes and improving quality of life.
Dr. Jiang has a particular interest in chronic pancreatitis and completed dedicated fellowship training in medical pancreatology under the mentorship of Dr. Stephen Pandol, a leading expert in the field. Her work emphasizes multidisciplinary care, and she is actively involved in clinical trials investigating innovative approaches such as novel nutritional therapies and digital health interventions. Her research has been published in Gastroenterology, Clinical Gastroenterology and Hepatology, Frontiers in Physiology, Pancreas, and Cancers. She served as an abstract reviewer for the Clinical Chronic Pancreatitis session at Digestive Disease Week 2025, one of the leading national conferences in the field of gastroenterology. She currently serves as a topic editor for the journal Frontiers in Physiology research collection: “Pain Mechanisms: The Drivers of Quality of Life in Patients with Gastrointestinal Disorders.” -
Jocelyn Jiao, MD MS
Clinical Assistant Professor, Adult Neurology
Clinical Assistant Professor, Medicine - Primary Care and Population HealthBioDr. Jiao is a fellowship-trained, board-certified neurologist with the Movement Disorders Center at Stanford Health Care. She is also a clinical assistant professor in the Department of Neurology and Neurological Sciences.
Dr. Jiao has extensive experience providing comprehensive care for patients with different types of movement disorders, including Parkinson’s disease. She is fellowship-trained in both movement disorders and hospice and palliative medicine. Dr. Jiao is developing an interdisciplinary neuropalliative clinic that emphasizes planning for the future and maximizes quality of life for people living with chronic neurological illness.
Dr. Jiao’s research efforts include a pilot study assessing the impact of deep brain stimulation (DBS) as a treatment for Parkinson’s-related motor symptoms upon mood and pain. Specifically, this work focuses on identifying correlations between DBS targets and reductions in medications that address depression, anxiety, and impulsivity symptoms that result from Parkinson’s treatments. Dr. Jiao has also completed a pilot study focused upon narrative medicine interventions for people living with Parkinson’s disease.
Dr. Jiao has published her work in multiple peer-reviewed journals, including Pain Medicine and the Journal of Neurosurgery. Dr. Jiao is a member of the American Academy of Neurology, the International Parkinson and Movement Disorder Society , and the International Neuropalliative Care Society. -
Tomás R. Jiménez
Joan B. Ford Professor
BioTomás Jiménez is the Joan B. Ford Professor in the department of Sociology and Comparative Studies in Race and Ethnicity, and founding co-director of Stanford's Institute for Advancing Just Societies. He is also the director of the Qualitative Initiative in the Immigration Policy Lab. His research and writing focus on immigration, policy, assimilation, social mobility, and ethnic and racial identity. His latest book, States of Belonging: Immigration Policies, Attitudes, and Inclusion (Russell Sage Foundation Press) (with Deborah Schildkraut, Yuen Ho, and John Dovidio) uses survey data (with an embedded experiment) and in-depth interviews to understand how state-level immigration policies shape belonging among Latino immigrants, US-born Latinos, and US-born whites in Arizona and New Mexico. The American Sociological Association’s Population Section selected the book for its Otis Dudley Duncan Distinguished Book Award. His second book, The Other Side of Assimilation: How Immigrants are Changing American Life (University of California Press, 2017), uses interviews from a race and class spectrum of Silicon Valley residents to show how a relational form of assimilation changes both newcomers (immigrants and their children) and established individuals (people born in the US to US-born parents). His first book, Replenished Ethnicity: Mexican Americans, Immigration, and Identity(University of California Press, 2010), draws on interviews and participant observation to understand how uninterrupted Mexican immigration influences the ethnic identity of later-generation Mexican Americans. Professor Jiménez has also published his research in Science, American Sociological Review, American Journal of Sociology, American Political Science Review, Proceedings of the National Academy of Sciences, Social Problems, International Migration Review, Ethnic and Racial Studies, Social Science Quarterly, DuBois Review, Social Currents, Qualitative Sociology, and the Annual Review of Sociology.
Professor Jiménez also researches immigration policy with Stanford's Immigration Policy Lab, directing the Lab's Qualitative Initiative to integrate qualitative and quantitative approaches in research to have policy impact. Current projects examine naturalization, refugee resettlement (with Pei Palmgren), and health and language access.
In other lines of research, Professor Jiménez and Sofia Avila examine how immigration becomes part of American national identity by studying a sample of high school US history textbooks from 1930-2007. This research employs hand-coding and computer-assisted text analysis of the textbook sample.
Professor Jiménez has taught at the University of California, San Diego. He was the Sigma Xi Distinguished Lecturer (2017-19). He has also been an Irvine Fellow at the New America Foundation and a Sage Fellow at the Center for Advanced Study in the Behavioral Sciences at Stanford University (CASBS). He was the American Sociological Association Congressional Fellow in the office of US Rep. Michael Honda, where he served as a legislative aide for immigration, veterans’ affairs, housing, and election reform. His writing on policy has appeared in reports for the Immigration Policy Center and the Migration Policy Institute. He has written editorials on immigration in several major news outlets, including The Washington Post, Los Angeles Times, CNN.com, The Chronicle of Higher Education, The Hill, and the San Diego Union-Tribune. He has also offered commentary for media outlets, including NBC News, National Public Radio, and Univision. -
Nerea Jimenez Tellez
Postdoctoral Scholar, Cardiovascular Institute
BioNerea is a Postdoctoral Scholar at Dr. Joseph Wu's lab. She earned her Bachelor's degree in Biochemistry at Universidad Complutense de Madrid (Spain). She was in an exchange program at the University of Saskatchewan (Canada) where she completed her Honours Thesis project on the Regulation of the Metastasis Suppressor Protein CREB3L1 in Dr. Deborah H Anderson's lab. She received her Masters' degree at Universidad de Alcalá (Spain) working at Dr. Isabel Liste Noya's lab on The role of p27Kip1 in the pluripotency and differentiation of dopaminergic neurons. She obtained her Ph.D. in Dr. Naweed Syed's lab studying the Cellular and molecular mechanisms underlying anesthetic-induced cytotoxicity, and their impact on learning and memory. She has received an ATRAC postdoctoral fellowship (Aug 2022 - Aug 2023), an AHA postdoctoral fellowship (Apr 2023 - Sept 2024) and currently holds a TRDRP Postdoctoral Fellowship (Jul 2024 - Jun 2027) titled "Using a human in vitro platform to study the effects of cannabinoids on the cardiovascular system" .
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David Jimenez-Morales
Sr Research Engineer, Medicine - Med/Cardiovascular Medicine
Current Role at StanfordBioinformatics Lead & Senior Research Scientist Department of Medicine, Division of Cardiovascular Medicine
At Stanford, Dr. Jimenez-Morales owns and leads organization-wide data initiatives, most notably for the Molecular Transducers of Physical Activity Consortium (MoTrPAC) and COVID-omics projects. He coordinates a multidisciplinary team of analysts and researchers, overseeing the data engineering and analysis for complex multi-omics, multi-tissue in-vivo, and clinical studies.
A key aspect of his role involves developing innovative, scalable computational infrastructure from the ground up. This includes engineering comprehensive data injection and quality control systems, and implementing FAIR data science principles. He also serves as a mentor to staff, postdocs, and graduate students, cultivating a collaborative and highly productive research environment. -
Yingying Jin
Postdoctoral Scholar, Human Gene Therapy
BioYingying is a postdoctoral researcher at Kay Lab. She completed her PhD at Peking Union Medical College in China in 2024, under the supervision of Prof. De-Pei Liu. Her research focused on gene editing and ssDNA-protein interactions. During her PhD, she developed an innovative strategy to enhance HDR efficiency of ssDNA donors by incorporating HDR-boosting modules. In 2025, she joined Kay Lab, where her current work involves improving exogenous gene expression delivered by AAV through engineering the AAV genome.
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Booil Jo
Professor of Psychiatry and Behavioral Sciences (Interdisciplinary Brain Science Research)
Current Research and Scholarly InterestsLatent Variable Modeling, Causal Inference, Longitudinal Data Analysis, Missing Data Analysis, Mixture and Growth Mixture Modeling, Prevention Science Methodology.
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Jeyun Jo
Postdoctoral Scholar, Pathology
BioDr. Jeyun Jo received his Pharm.D. from Pusan National University in 2016 and his Ph.D. in pharmacy at the same institution in 2021. His thesis studies focused on the first total synthesis of anmindenol A and optimization of 2-anilinopyrimidine-based selective inhibitors against triple-negative breast cancer cells. He then worked for one year as a senior research scientist at Chong Kun Dang, a leading pharmaceutical company in Korea, where he developed large-sacale synthetic processes for engineered peptides. In May 2022, he joined the Bogyo lab at Stanford University as a postdoctoral fellow. His current research focuses on developing highly selective inhibitors and activity-based probes targeting specific serine hydrolases in pathogenic bacteria and cancer.
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Esther M. John
Professor (Research) of Epidemiology and Population Health and of Medicine (Oncology)
Current Research and Scholarly InterestsDr. John has extensive expertise in conducting population-based epidemiologic studies and has led as Principal Investigator multiple large-scale studies, including multi-center studies with a study site in the San Francisco Bay Area with its diverse population. Many of her studies and collaborations investigated cancer health disparities. Her research has focused on the role of modifiable lifestyle factors (e.g., body size, physical activity, diet), hormonal factors, early-life exposures, genetic variants, and gene-environment interactions; differences in risk factors by race and ethnicity, breast cancer subtypes, and prostate cancer subtypes; risk factors for familial breast cancer and second primary breast cancer, as well as prognostic factors related to survival disparities.
As Principal Investigator, Dr. John has led a number of studies conducted in the San Francisco Bay Area, including:
- the Northern California site of the Breast Cancer Family Registry, an on-going prospective multi-generational cohort of over 13,000 families established in 1995 at six international sites;
- the San Francisco Bay Area Breast Cancer Study, a population-based case-control study in nearly 5,000 African American, Hispanic, and non-Hispanic White women that investigated the role of modifiable lifestyle factors and other risk factors;
- the California site of the Breast Cancer Health Disparities Study that investigated genetic variability and breast cancer risk and survival in Hispanic and non-Hispanic White populations in the context of genetic admixture;
- the Breast Cancer Etiology in Minorities (BEM) Study, a pooled analysis of risk factors for breast cancer subtypes in minoritized racial and ethnic populations;
- the Northern California site of the WECARE Study that investigates risk factors for second primary contralateral breast cancer;
- the Second Primary Breast Cancer Disparities Study, a pooled analysis of risk factors for contralateral and ipsilateral second primary breast cancer in a diverse population;
- the San Francisco Bay Area Prostate Cancer Study, a population-based case-control study of lifestyle and genetic risk factors for advanced and localized disease.
These studies collected and pooled extensive data and biospecimens and continue to support numerous ancillary studies, collaborations and international consortia and have contributed to a better understanding of cancer risk and survival in minoritized racial and ethnic populations.
Dr. John is a founding PI of the LEGACY Girls Study, a prospective cohort established in 2011 that investigates early life exposures in relation to pubertal development outcomes, breast tissue characteristics, and behavioral and psychosocial outcomes in the context of having a family history or breast cancer.
In 2023, Dr. John joined the Stanford investigator team of the MOSAAIC (The Multiethnic Observational Study in American Asian and Pacific Islander Communities) Study, a five-center study to improve health of American Asian, Native Hawaiian, and Pacific Islander populations. -
Roy Mattathu John, MD, PhD, FRCP
Clinical Professor, Medicine - Cardiovascular Medicine
BioDr. John is a fellowship-trained cardiologist with more than 25 years of experience. He is a clinical professor in the Department of Medicine at Stanford University School of Medicine.
He originally earned board certification in clinical cardiac electrophysiology in 1996 and has continued to recertify. He also has earned board certification in cardiovascular disease and internal medicine.
Dr. John diagnoses and manages all forms of cardiac arrhythmias including atrial fibrillation and ventricular arrhythmias. His special interests include catheter ablation for SVT, atrial arrhythmias, pacemaker and defibrillator implants, and lead extraction.
He has conducted extensive research. He has participated in large multi-center clinical trials, including over 30 studies as a primary investigator of drugs, devices, and ablation techniques. He helped pioneer a new way to manage scar-related ventricular tachycardia. He also helped develop innovations in cardiac pacemaker technology.
Dr. John has authored over 200 publications that include 126 original research papers. They have appeared in reputed journals such as the New England Journal of Medicine, Circulation, Lancet, Journal of the American College of Cardiology, European Heart Journal, Heart Rhythm, Journal of Cardiovascular Electrophysiology, and many more. Topics have included innovative, new techniques and technologies for the treatment of supraventricular arrhythmias, atrial fibrillation, ventricular tachycardia, catheter ablation, lead extraction, cardiac pacing, and defibrillation.
He was a member of the editorial board for Circulation and is currently on the editorial board of the publications Heart Rhythm Journal, Arrhythmia and Electrophysiology, Journal of Cardiac Electrophysiology, and Journal of Innovations in Cardiac Rhythm Management.
Dr. John also has written several chapters for medical textbooks such as Harrison’s Principles of Internal Medicine, Zipes Textbook on Cardiac Electrophysiology - Cell to Bedside, Conn’s Current Therapy, Electrical Disorders of the Heart, Cardiac Mapping, and many more.
He has made invited presentations to his peers at scientific sessions of the Heart Rhythm Society, American Heart Association, American College of Cardiology, and Heart Failure Society. He has delivered more than 60 national and international lectures. Subjects include cardiac pacing, defibrillation, heart failure, and arrhythmia management including catheter ablation for arrhythmias.
Dr. John is a fellow of the American College of Cardiology, Heart Rhythm Society, and Royal College of Physicians of London.
He has volunteered his time and expertise to provide free cardiac care to underserved patients in Bolivia, India, and Kenya. -
Castro Johnbosco
Postdoctoral Scholar, Orthopedic Surgery
BioI am a bioengineer working at the interface cell-biomaterial interface to study various biological process by engineering material driven invitro systems.
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Claire Johns
Clinical Assistant Professor, Pediatrics - Hematology & Oncology
BioFellowship: Pediatric Hematology Oncology Fellowship, Stanford Lucile Packard Children's Hospital 2022-2025
Residency: Pediatrics, University of California San Francisco 2019-2022
Medical School: University of California San Francisco, Class of 2019
