· Arbor News; Medical News; Contact; Portal; MENU. New Patient Portal is Here! July 16, 2014 Arbor News. See our new Patient Portal at Follow My Health! Thornton Office . 303.254.8500. 3655 E 104th Ave, Suite A, Thornton, CO 80233. Our Thornton Office is Solar-Powered ... We had a “twinning” day at Arbor on 2/22/22. Here....