How To Set-Up Your Patient Portal. How to Message a Provider or our Clinic. How to Check-In for an E-Visit . Northeast Texas Neurology Associates. 4801 Troup Highway, Suite 800, Tyler, TX, 75703, United States. 903-526-7055 info@netxneuro.com. Hours. Mon 8am to 4:00pm. Tue 8am to 4:00pm..