Dr. Tierney is board certified urologist. He obtained his medical degree and completed his residency at the University of Wisconsin - Madison.

Dr. Tierney specializes in robotic and laparoscopic surgery, minimally invasive procedures for enlarged prostates and the treatment of kidney stones.

Over the past 10 years, Dr. Tierney's peers have consistently named him as one of Madison's Top Doctors in surveys conducted by Madison Magazine.

Outside of work, he enjoys biking and triathlons, playing guitar, performing community service and spending time with his kids.