ENROLL TODAY In the Health Insurance Marketolace Certified Application Counselors at the Flathead Community Health Center can help you find a health insurance plan that meets your needs and budget. Important Dates: . November 1, 2018: First day of Open Enrollment for 2018 health coverage. . December 14, 2018: Last day to enroll in or change plans for coverage to start January 1, 2018 January 1, 2019: 2018 coverage starts for those who enroll or change plans by December 15 Flathead ommunity Health Center Schedule an appointment by calling 406-758-2165 or email: outreach@flathead.mt.gov