CHI St. Vincent Arkansas Neuroscience Institute. 501.552.6400. 6020 Warden Road, Suite 100. Sherwood, AR 72120. Alert: Nathan Littlejohn, MD, urologist at CHI St. Vincent Urology Clinic Hot Springs is now seeing patients in Hot Springs Village on the first Tuesday of every month from 9-11am by appointment. Call 501.525.4555..