Humberto Villarreal, M.D. | Urologic Surgeon

Bertram Yuh, M.D., is a urologic surgeon at City of Hope's Duarte and Pasadena locations.

Kevin Chan, M.D., is a urologic surgeon for City of Hope Duarte in the Los Angeles-area. Dr. Chan specializes in urinary tract reconstruction in the treatment of various urologic cancers including bladder and prostate cancer and upper tract urothelial carcinoma. He also treats the complications of urologic cancer treatments including urinary incontinence and erectile dysfunction. Additionally, Dr. Chan treats all aspects of general urology, including BPH and kidney stones. In addition, Dr. Chan conducts research in surgical techniques and postoperative pathways that help minimize complications and improve outcomes in the treatment of bladder cancer. He has pioneered the use of fluorescence imaging. Dr. Chan is fluent in English and Spanish.

Clayton S. Lau, M.D. is a urologic surgeon for City of Hope Duarte and the chief of the Division of Urology and Urologic Oncology. Dr. Lau specializes in minimally invasive approaches to urologic oncology and reconstructive urology. As a urology surgeon, he has performed over 4,000 robotic and laparoscopic procedures. He has also trained numerous surgeons in robotic surgery throughout the U.S. Dr. Lau is known for the close, professional relationship he establishes with his patients. He goes the extra mile to make sure they know everything they need to know about their urologic malignancy treatment options - and that includes getting a second opinion.