School of Medicine
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Ruth Belay, MD
Clinical Assistant Professor, Urology
BioDr. Belay is a fellowship-trained urologic oncologist with the Stanford Health Care Urologic Cancer Program. She is also a clinical instructor in the Department of Urology at Stanford University School of Medicine.
Dr. Belay specializes in diagnosing and treating disorders of the urinary tract, including kidney cancer, enlarged prostate, ureteral stones, and blood in the urine. She also treats all types of genitourinary cancers. She is skilled in the use of multiple imaging and treatment modalities, including cystoscopy, endourology, laparoscopy, laser therapy and surgery, ultrasound, urodynamic testing, ureteroscopy, and robotic surgery. Dr. Belay works closely with her patients to provide a comprehensive evaluation and care plan.
Her research interests include pain control during robot-assisted prostatectomy (prostate removal) and determining the best types of guidewires for bypassing stones in the ureter. She has also studied the effects of caffeine on postmenopausal women with overactive bladder symptoms
Dr. Belay is involved with the Stanford Medicine Center for Improvement, the goal of which is to inspire and accelerate the delivery of consistent, excellent care across Stanford Medicine. She is also passionate about sharing her knowledge of urology with medical students, having taught and mentored several residents and post-doctoral fellows.
Dr. Belay’s research has appeared in several peer-reviewed journals, including Urology Practice, Journal of Endourology, and Journal of Women’s Health. She has presented her work both nationally and internationally at meetings and conferences of professional organizations including the American Urological Association (AUA); Society of Urodynamics, Female Pelvic Medicine & Urogenital Reconstruction; and World Congress of Endourology.
Dr. Belay is a member of the AUA and Society of Urologic Oncology. -
Sean Bendall
Associate Professor of Pathology
On Partial Leave from 02/01/2026 To 10/31/2026Current Research and Scholarly InterestsOur goal is to understand the mechanisms regulating the development of human systems. Drawing on both pluripotent stem cell biology, hematopoiesis, and immunology, combined with novel high-content single-cell analysis (CyTOF – Mass Cytometry) and imagining (MIBI-Multiplexed Ion Beam Imaging) we are creating templates of ‘normal’ human cellular behavior to both discover novel regulatory events and cell populations as well as understand dysfunctional processes such as cancer.
