Dr johnson urology associates Johnson is a Urologist in Salt Lake City, UT. Phillip Lowe specializes in pediatric urology. Heather Johnson, APRN-CNP Urology. Johnson has extensive experience in Urinary Calculi & Removal and Urinary Conditions. Leading the way globally, we have invested in robotic technology that results in more precise surgeries with smaller incisions, shorter hospital stays, faster recovery times, and better outcomes for our patients. Located at 2340 Knobb Creed Rd in Johnson City, TN. Locations. E. Johnson, MD, FACS. This provider currently accepts 29 insurance plans including Medicare and Medicaid.