School of Medicine
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Weihan Chu
Clinical Assistant Professor, Medicine
BioAlex Weihan Chu, M.D. serves as a Clinical Assistant Professor at Stanford School of Medicine and is the Associate Chief Medical Officer and Vice President of Quality, Health Equity, and Clinical Affairs at Stanford Health Care Tri-Valley.
Dr. Chu has been a dedicated member of SHC Tri-Valley since 2015, joining as a Hospital Medicine physician after completing his residency at Stanford Hospital. He is board-certified in Internal Medicine and Clinical Informatics. Since 2016, he has served as the Medical Informatics Director, a role he continues to oversee, ensuring that technology enhances clinical workflows and patient care.
Dr. Chu has held multiple leadership roles, including serving on the Medical Executive Committee and as Vice Chief of Medicine. He previously served as Associate Chief Medical Officer for Patient Safety, Infection Control & Accreditation, Regulatory & Licensing, where he played a key role in supporting Joint Commission surveys, ensuring CDPH compliance, and leading hospital safety initiatives to address regulatory findings.
In 2024, Dr. Chu transitioned to his current role, the Associate Chief Medical Officer and Vice President for Quality, Health Equity, and Clinical Affairs where he is responsible for coordinating a comprehensive system of quality monitoring and improvement to achieve excellent patient care. He works closely with Kathleen Carrothers, Senior Director of Quality Management and Performance Improvement, to oversee clinical outcomes, data management, and performance improvement initiatives. He also leads health equity efforts and manages physician agreements, ensuring sustained high-quality care and strategic physician engagement.
Dr. Chu brings expertise in physician engagement, clinical oversight, clinical informatics, and quality improvement. His experience in driving multi-disciplinary change and advancing health equity to aligns with the hospital’s mission and vision.
Outside of work, Dr. Chu enjoys hiking, scuba diving, photography, and exploring the latest advancements in technology. -
Katrin Chua
Professor of Medicine (Endocrinology, Gerontology and Metabolism)
On Partial Leave from 02/01/2026 To 08/31/2026Current Research and Scholarly InterestsOur lab is interested in understanding molecular processes that underlie aging and age-associated pathologies in mammals. We focus on a family of genes, the SIRTs, which regulate stress resistance and lifespan in lower organisms such as yeast, worms, and flies. In mammals, we recently uncovered a number of ways in which SIRT factors may contribute to cellular and organismal aging by regulating resistance to various forms of stress. We have now begun to characterize the molecular mechanisms by which these SIRT factors function. In particular, we are interested in how SIRT factors regulate chromatin, the molecular structure in which the DNA of mammalian genomes is packaged, and how such functions may link genome maintenance to stress resistance and aging.
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Jonathan Wayne Chun
Clinical Assistant Professor (Affiliated), Med/Hospital Medicine
Current Role at StanfordInpatient Rotation Director for the VA
