Dr. Qingwei Yan

Dr. Marshall L. Stoller specializes in providing care for patients with urinary stone disease. His expertise includes minimally invasive techniques, such as endourology and laparoscopy. He helped spearhead a comprehensive program in the management of urinary stone disease, utilizing and testing a variety of lithotripters, a noninvasive device that pulverizes urinary stones. After completing his undergraduate studies at the University of California, Berkeley, Stoller earned his medical degree at Baylor College of Medicine. He then pursued residencies in general surgery and urology at UCSF before becoming an instructor and research fellow at the University of New South Wales and its affiliated hospitals in Sydney, Australia. He returned to UCSF as chief resident in urology and then joined the medical staff. Stoller has received many awards, including grand prize in the annual Jack Lapides Essay Contest on Urodynamic and Neurourology Research. He has received the Distinction in Teaching Award from the UCSF Academic Senate. For more information about his research, please visit Stoller's lab website at stollerlab.ucsf.edu . Dr. Stoller is highly rated in 30 conditions, according to our data. His top areas of expertise are Kidney Stones, Cystinuria, Hydronephrosis, Ureteroscopy, and Lithotripsy.

Dr. Benjamin Breyer is a urologic surgeon who specializes in complex urethral and penile reconstruction, male incontinence, male fistulas and surgery for erectile dysfunction. Breyer's research has been federally supported and focuses on the epidemiology (the study of which populations are affected by diseases, factors affecting outcomes and related matters) of sexual dysfunction and lower urinary tract disorders. He also studies urologic trauma and surgical repair of the urinary tract. He has authored or co-authored more than 350 articles and book chapters. Breyer earned his medical degree from the Pritzker School of Medicine at the University of Chicago. At UCSF, he completed a residency in urology, followed by a fellowship in male genitourinary reconstruction and trauma. He also earned his master of advanced study degree in clinical research at UCSF. Dr. Breyer is highly rated in 34 conditions, according to our data. His top areas of expertise are Urethral Stricture, Urinary Incontinence, Stress Urinary Incontinence, Reconstructive Urology Surgery, and Prostatectomy.

Thomas Chi is a Urologist in San Francisco, California. Dr. Chi is highly rated in 24 conditions, according to our data. His top areas of expertise are Kidney Stones, Hydronephrosis, Cystinuria, Ureteroscopy, and Endoscopy.