School of Medicine
Showing 151-172 of 172 Results
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Irene Sonu
Clinical Associate Professor, Medicine - Gastroenterology & Hepatology
BioI am passionate about gut health and strive to provide the best care to my patients. I specialize in complex motility disorders of the gastrointestinal tract. My areas of clinical expertise include achalasia, dysphagia, eosinophilic esophagitis, gastroesophageal reflux disease, gastroparesis, functional dyspepsia, irritable bowel syndrome, and pelvic floor dysfunction. I also see patients in need of fecal microbiota transplant for recurrent C. difficile infection.
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Sean Paul Spencer, MD,PhD
Assistant Professor of Medicine (Gastroenterology and Hepatology)
BioSean Spencer, MD,PhD is a Gastroenterologist and Physician Scientist at Stanford University working with Justin Sonennburg,PhD to uncover the role of dietary intake on the gut microbiome and mucosal immune system. Sean obtained his medical degree University of Pennsylvania, earning his PhD studying nutritional immunology with Yasmine Belkaid,PhD at the National Institutes of Health (NIH), after which he moved to Boston for residency training at Massachusetts General Hospital and completed his Gastroenterology training at Stanford University. Sean’s career goal is to study mechanisms by which dietary intake influences our microbiome and immune system to better understand and treat gastrointestinal disease. Sean has launched a microbiome-focused clinical practice at Stanford where he is working to develop novel microbiome diagnostics and microbial medicines.
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Ankit Srivastava
Temporary Employee, Medicine - Med/Gastroenterology and Hepatology
Current Role at StanfordAs a research scientist, the overarching goal of my research is to elucidate targetable cellular crosstalk between hepatocytes and immune cells in the liver that promotes aging, inflammation, and cancer. To highlight this, I use spatial biology, patient-derived organoids, and disease models of cancer and inflammation.
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Sarah Streett
Clinical Professor, Medicine - Gastroenterology & Hepatology
BioDr. Sarah Streett is a Clinical Professor of Medicine, the Director of Inflammatory Bowel Disease Education at Stanford, and she is passionate about taking care of people with IBD. She is a national expert in treating complex IBD and initiated a multi-disciplinary approach to care with colorectal surgery, pediatrics, and nutrition. In 2018 she received the Champion of Hope Award from the Crohn’s and Colitis Foundation and serves on their National Scientific Advisory Committee. Her interests focus on fertility and pregnancy in people with IBD, developing precision approaches to IBD therapy, and the role that the microbiome and diet play in its pathogenesis. She is a primary investigator of the Stanford IBD Registry and has research projects focused on optimizing clinical outcomes in IBD, the role of the microbiota and diet in IBD and pregnancy, and applying new technologies to individualizing therapy for IBD. She is also the primary investigator on multiple industry-sponsored IBD trials.
Teaching is a top priority for Dr. Streett who feels that mentoring fellows in the development of their careers is a privilege. She has held many national leadership roles in the American Gastroenterological Association, where she has been Chair of the Practice Management and Economics Committee, and currently serves on the Government Affairs Committee. She also an appointed member of the Gastrointestinal Drug Advisory Committee at the FDA. She has represented the interests of gastroenterologists and their patients on Capitol Hill numerous times. Dr. Streett believes strongly in a collaborative approach to give patients personalized care based on the latest therapies for the treatment of IBD and is committed to mentoring the next generation of experts in the field. -
Natalie Torok
Professor of Medicine (Gastroenterology and Hepatology)
Current Research and Scholarly InterestsOur lab is focused on exploring the role of matrix remodeling in disease progression in metabolic dysfunction steatohepatitis (MASH)-related hepatocellular carcinoma and primary sclerosing cholangitis. Our goal is to uncover how biomechanical characteristics of the ECM affect mechano-sensation, and how these pathways could ultimately be targeted. We are also interested in aging and its effects on metabolic pathways in MASH and HCC.
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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. -
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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Zhiyu Yang, MD
Affiliate, Medicine - Med/Gastroenterology and Hepatology
Visiting Scholar, Medicine - Med/Gastroenterology and HepatologyBioAs a clinical physician specializing in gastroenterology and hepatology, I am proficient in the clinical diagnosis and treatment of common gastrointestinal diseases and various liver diseases. My main research lay on metabolic related liver diseases and inflammatory bowel diseases.
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Margaret J. Zhou, MD, MS
Clinical Assistant Professor, Medicine - Gastroenterology & Hepatology
BioDr. Margaret Zhou is a board-certified, fellowship-trained gastroenterologist with Stanford Health Care. She also holds an appointment as clinical assistant professor at Stanford University School of Medicine.
She specializes in therapeutic endoscopy with expertise in treating Barrett’s esophagus and disorders of the pancreas and bile duct. In particular, she offers advanced endoscopic interventions to prevent, detect, and manage gastrointestinal (GI) cancers. These interventions include endoscopic mucosal resection, endoscopic ablation, endoscopic retrograde cholangiopancreatography, and endoscopic ultrasound. She is also interested in the management of esophageal disorders such as gastroesophageal reflux disease.
Dr. Zhou has published widely on improving the detection of precancerous lesions and cancers of the GI tract. She is particularly interested in prevention, early detection, and outcomes in Barrett’s esophagus, esophageal cancer, and stomach cancer. In addition, she has published on new technologies and the use of artificial intelligence in GI. Her research has been published in multiple journals including Clinical Gastroenterology and Hepatology; Clinical and Translational Gastroenterology; and Cancer Epidemiology, Biomarkers & Prevention.
Dr. Zhou is an active member of multiple national GI societies. She currently serves on the American Gastroenterological Association (AGA) Clinical Guidelines Committee and AGA Trainee and Early Career Committee. She also serves as an Associate Editor for Evidence-Based GI, an American College of Gastroenterology (ACG) journal.
