Our physicians are all board certified or board eligible with special areas of interest including urologic oncology; pediatric urology; urogynecology; prostate; bladder and kidney cancer; and male fertility issues. More detailed information is available on each physician by clicking on the name below:

Patrick M. Bennett, MD

Specialties: Urology, Robotic Surgery – Urology

Dr. Bennett joined North Bay Urology in 1996 when he returned to Marin after completing his training at the Massachusetts General Hospital in Boston. Having been raised in San Rafael and attending Saint Ignatius College Preparatory in San Francisco, Dr. Bennett earned his BA degree at Harvard College where he graduated with Magna Cum Laude honors.

Read Dr. Bennett’s Biography


Robert Chan, MD

Specialties: Pelvic reconstructive surgery, Continence, and Neuro-urology

Dr. Robert Chan attended Stanford University and graduated with Distinction in the top 15% of his class. He attended medical school at Vanderbilt University School of Medicine in Nashville, Tennessee. During his time at Vanderbilt, he participated in international medical mission work to Cuzco, Peru and the Philippines.

Read Dr. Chan’s Biography

   Visit Dr. Chan’s Website  


Winnie Wai Peng Eng, PA-C

Specialties: Urologic Surgery (Surgical Assistant)

Winnie Eng joined North Bay Urology in June 2018. She graduated from State University of New York Stonybrook in 2015 with her Masters of Science in Physician Assistant Studies. She then went on to extend her training as a surgical assistant at USC Institute of Urology.


Harry Neuwirth, MD

Specialties: Urology, Robotic Surgery – Urology

Dr. Neuwirth joined the urology group in 1989. He received his BS, cum laude, in molecular biophysics and biochemistry from Yale University and earned his MD at Johns Hopkins University. He completed his four-year residency in urology and his two-year residency in surgery at UCLA.

Read Dr. Neuwirth’s Biography


David M. Rudnick, MD

Specialties: Urology

Dr. Rudnick received a BA in American History from Harvard College in 1989 and went on to Columbia University’s College of Physicians and Surgeons in New York for medical school. He completed a two year surgical residency at Massachusetts General Hospital, followed by a four year urology residency at Massachusetts General/Harvard Medical School.

Read Dr. Rudnick’s Biography


R. James Yu, MD

Specialties: Urology, Urologic Oncology, Robotic Surgery – Urology, Minimally Invasive Surgery

Dr. Yu’s superior expertise in robotic surgery for urological cancers is an asset to North Bay Urology and to the Marin healthcare community at large. After graduating from the USC Keck School of Medicine with Highest Distinction and Alpha Omega Alpha honors, Dr. Yu went on to Stanford University where he completed his internship and residencies in General Surgery and Urology.

Read Dr. Yu’s Biography