Who We Are Due to the loyalty of our patients and our diligence to provide quality care, we continue to be the largest independent urology practice in the area. We currently have on staff five board-certified urologists and four board-certified nurse practitioners. Our most senior urologist is Gregg Hallman, M.D., F.A.C.S., followed by James Outman, D.O., F.A.C.S., Vincenzo… About Us.