How do I sign up for a Health First Colorado health plan?

First, you should review the different Health First Colorado plans and decide which one is the best one for you. Visit enroll.healthfirstcolorado.com or call Health First Colorado Enrollment at 303-839-2120 (in Denver) or 1-888-367-6557 (outside of Denver). Hours: Monday-Friday, 8 a.m. to 5 p.m. (closed state holidays). Note: The Health First Colorado Enrollment number is not for information on benefits or to find out if you qualify.