Pinnacol Assurance Share: Insurance - Workers Compensation Pinnacol Assurance Visit Website 7501 E Lowry Blvd Denver, Colorado 80230 (303) 361-4000 About Map About Pinnacol Assurance does just one thing and does it better than anyone: provide caring workers’ compensation protection to Colorado employers and employees. What's Nearby? Distance: 5 10 15 20 25 50 mi.