November 1 – December 15 Open Enrollment for a 2018 Health Insurance Plan. The Health Insurance Marketplace is a way to find health coverage that fits your budget and meets your needs. To enroll online visit: www.healthcare.gov. To enroll by phone call the Marketplace Call Center at 1-800-318-2596 (TTY1-855-889-4325) for help in your language. To schedule a free, in-person visit with a trained assister call 304-598-5150.