Medicine
Showing 801-820 of 1,188 Results
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Jane Parnes
Professor of Medicine, Emerita
Current Research and Scholarly InterestsThe lab is studying the mechanisms controlling B cell responsiveness and the balance between tolerance and autoimmunity. B cells deficient in CD72 are hyperresponsive to stimulation through the B cell receptor. We are examining the alterations in B cell signaling in these B cells and the mechanisms by which CD72 deficiency partially abrogates anergic tolerance. We hope to learn how deficiency in CD72 leads to spontaneous autoimmunity and increased susceptibility to induced autoimmune disease.
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Julie Parsonnet
George DeForest Barnett Professor of Medicine, Emerita
Current Research and Scholarly InterestsI am an infectious diseases epidemiologist who has done large field studies in both the US and developing countries. We research the long-term consequences of chronic interactions between the human host and the microbial world. My lab has done fundamental work establishing the role of H. pylori in causing disease and understanding its epidemiology. Currently, our research dissects how and when children first encounter microbes and the long term effects of these exposures on health.
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Gopanandan Parthasarathy
Clinical Assistant Professor, Medicine - Gastroenterology & Hepatology
BioDr Nandan Parthasarathy is a hepatologist and physician-scientist in the Department of Gastroenterology and Hepatology at Stanford University.
After obtaining his medical degree in JIPMER, India, he completed a 2 year clinical research fellowship at Mayo Clinic, following which he completed his residency training at Cleveland Clinic, and GI and transplant hepatology fellowships at Mayo Clinic. During his fellowship, his research work was focused on exploring the immune mechanisms of liver injury in metabolic dysfunction associated steatohepatitis.
Clinically, he is focused on taking care of patients with MASH, cirrhosis and liver cancer.
His career goal is to study the gut-immune system-liver injury axis in order to bring novel therapeutics from the bench to bedside in patients with liver disease. -
Michele Lanpher Patel
Instructor, Medicine - Stanford Prevention Research Center
BioMichele L. Patel, PhD is an Instructor in the Stanford Prevention Research Center at the Stanford University School of Medicine. Trained as a clinical health psychologist, Dr. Patel conducts research to optimize scalable digital health interventions for adults with obesity. She leads clinical trials that test innovative strategies to address the critical challenge of suboptimal engagement in digital interventions.
Dr. Patel's research is supported by an NIH career development award (K23; 2022-2027). Her recent Spark trial investigated the most potent combination of self-monitoring strategies in a behavioral weight loss intervention among 176 adults with overweight or obesity. Results are expected to be published in 2026.
She is also testing other strategies to promote engagement, weight loss, and health. This includes the impact of easier vs. harder goals, and the effect of high-frequency, low-friction behavioral strategies. Her work leverages the Multiphase Optimization Strategy (MOST) to systematically identify intervention strategies that maximize effectiveness while minimizing patient burden.
Dr. Patel received her PhD in clinical psychology from Duke University. She completed her clinical internship at the VA Palo Alto with a specialization in behavioral medicine, followed by a postdoctoral fellowship (T32) at the Stanford Prevention Research Center. She currently serves as the Past Chair of the Optimization of Behavioral and Biobehavioral Interventions special interest group in the Society of Behavioral Medicine.
Primary Research Interests:
-- Optimizing digital interventions for obesity treatment and prevention
-- Leveraging behavioral science to create lower-burden self-monitoring strategies to improve engagement and outcomes
-- Identifying psychosocial factors (including health literacy and self-efficacy) that influence treatment success
Methodological Expertise:
-- Randomized clinical trials, including factorial designs and embedded trials
-- Systematic reviews
-- Signal detection analysis
*New 2026 paper on goal setting in a digital weight loss intervention: https://onlinelibrary.wiley.com/doi/10.1002/osp4.70175 -
Neha Patel, MD
Clinical Assistant Professor, Medicine - Oncology
BioDr. Neha Patel is a triple board-certified, fellowship-trained medical oncologist with Stanford Health Care. She is also a clinical assistant professor in the Department of Medicine, Division of Oncology at Stanford University School of Medicine.
Dr. Patel provides expert, personalized care for patients with both common and rare cancers and specializes in treating patients with genitourinary cancer. She is deeply committed to delivering comprehensive, patient-centered oncology services, with an emphasis on helping individuals and their families understand their diagnosis and navigate treatment options with confidence and clarity.
Her research focuses on designing and implementing system-level interventions to advance equitable, high-value cancer care. Dr. Patel is particularly passionate about integrating oncology and palliative (symptom-relieving) care—creating collaborative models that improve patient outcomes, elevate the quality of life, and enhance the overall care experience.
Known for her compassionate and relational approach, Dr. Patel builds strong, trusting partnerships with the patients and families she serves. She prioritizes care that aligns with each individual’s values, preferences, and goals, with the aim of achieving the best possible quality of life and longevity. -
Shruti Patel, MD
Clinical Assistant Professor, Medicine - Oncology
BioDr. Shruti R. Patel is a board-certified, fellowship-trained medical oncologist at Stanford Health Care. She is also a clinical assistant professor in the Department of Medicine, Division of Oncology at Stanford University School of Medicine.
Dr. Patel specializes in treating gastrointestinal (GI) cancers, including colorectal, pancreatic, stomach, esophageal, and biliary tract cancers. She is dedicated to helping patients make complex treatment decisions and improving access to clinical trials. Her care philosophy centers on clear communication, individualized treatment, and helping patients understand both the science and real-life implications of cancer care.
Dr. Patel’s research interests include early-onset GI cancers, fertility preservation approaches, and improving access to novel therapies. She also studies sex- and gender-based differences in cancer outcomes and equity in clinical trials. Dr. Patel has received funding for her research through the Stanford Cancer Institute’s Innovation Award.
Dr. Patel’s research has been published in many peer-reviewed journals, including Journal of Clinical Oncology, Frontiers in Oncology, Translational Lung Cancer Research, and JAMA Oncology.
Dr. Patel is a member of the American Society of Clinical Oncology (ASCO) and the American Association for Cancer Research (AACR). She is also a board member of the Association of Northern California Oncologists (ANCO). -
Achyut Patil, MD
Clinical Assistant Professor, Medicine - Pulmonary, Allergy & Critical Care Medicine
BioDr. Achyut Patil is a board-certified pulmonologist at Stanford Health Care and a clinical assistant professor in the Department of Medicine, Division of Pulmonary, Allergy & Critical Care Medicine at Stanford University School of Medicine.
He diagnoses and treats disorders of the lungs and respiratory system, including pneumonia and chronic obstructive pulmonary disease (COPD). In addition, Dr. Patil performs various pulmonary and critical care procedures. These include bronchoscopy (viewing the airways with a camera scope) and catheterization (placing a thin tube into a blood vessel for monitoring), among others.
Dr. Patil’s research interests include improving the experience of medical school trainees. He is also involved in teaching resident and fellow physicians.
Dr. Patil has published in the peer-reviewed journals Neuro Oncology, Journal of Biological Chemistry, and Lipids. -
Ria Paul
Clinical Associate Professor, Medicine - Primary Care and Population Health
BioClinical Focus
.Internal Medicine
.Geriatric Medicine
.Wellness
.Focus on Health Disparities in Elderly Population -
Mark Pegram
Susy Yuan-Huey Hung Professor
Current Research and Scholarly InterestsMolecular mechanisms of targeted therapy resistance in breast and other cancers
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Marco Perez
Associate Professor of Medicine (Cardiovascular Medicine)
BioDr. Marco Perez's research goal is to better understand the fundamental causes of cardiovascular disease through the study of genetics and epidemiology. His group studies the genetic variations and environmental exposures that are associated with conditions such as atrial fibrillation and heart failure. He has led the studies of atrial fibrillation in Women's Health Initiative, one of the largest nation-wide population-based cohorts. He is currently conducting a large study monitoring for silent or asymptomatic atrial fibrillation in women from the WHI randomized to exercise intervention, and was co-PI of the Apple Heart Study, a clinical trial that validated the ability of a smartwatch to detect atrial fibrillation. He is now PI of the Clinical Coordinating Center at Stanford for the REACT-AF which is a clinical trial to evaluate efficacy and safety of a "pill-in-the pocket" approach to anticoagulation for AF using a smartwatch. He is interested in understanding the paradox that atrial fibrillation is less common in African Americans and Hispanics, despite a greater burden of risk factors such as hypertension. As director of the Stanford Inherited Arrhythmia Clinic, he evaluates families with rare inherited arrhythmias associated with sudden death such as Long QT and Brugada Syndromes and explores their links with novel genes. He also studies the genetic causes of very early onset atrial fibrillation. He also studies how best to use the electrocardiogram and imaging modalities using Machine Learning techniques to identify patients at risk for cardiovascular disease. Dr. Perez receives funding from the NIH/NHLBI, Apple Inc., Janssen and the Colson Foundation.
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Eduardo J. Pérez-Guerrero
Clinical Scholar, Medicine
Resident in Med/Hospital MedicineBioEduardo J. Pérez-Guerrero, MD, is a third-year Internal Medicine resident and rising Chief Resident at Stanford University with clinical interests in cardiology and electrophysiology. His research centers on the intersection of wearable technology, artificial intelligence, and cardiovascular medicine, including work with the Apple Heart Study team. He is actively involved in the implementation and evaluation of AI-driven tools in clinical care, with a focus on assessing performance, safety, and real-world impact on patient outcomes.
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Alexander C. Perino
Clinical Associate Professor, Medicine - Cardiovascular Medicine
BioAlexander C. Perino, MD is a cardiac electrophysiologist at Stanford Health Care whose primary focus is providing procedural care for patients with heart rhythm disorders. He performs a wide range of ablation and cardiac device implantation procedures, utilizing cutting-edge techniques and technologies to deliver high-quality, patient-centered care.
Dr. Perino serves as the Director of the Electrophysiology Laboratory at Stanford Health Care, where he leads efforts to enhance procedural quality, safety, and patient outcomes across the electrophysiology program. He is also the principal investigator for numerous clinical trials, working to ensure that patients have the opportunity to participate in research and contribute to scientific advancement—without compromising the quality of their care.
In addition, Dr. Perino is the Medical Informatics Director for the Division of Cardiovascular Medicine at Stanford Health Care. In this role, he oversees initiatives aimed at improving the quality and safety of cardiovascular care, while optimizing the electronic health record to better support patients and clinicians alike. -
VJ Periyakoil, Professor of Medicine
Professor of Medicine (Primary Care and Population Health)
Current Research and Scholarly InterestsMy lab is focused on longevity and healthy aging research.
