Although the Dec. 15 deadline has passed for searching for Marketplace plans starting on Jan. 1, 2015, there's still time to obtain coverage for next calendar year to avoid a financial penalty. Important dates for customers to know include: If you enroll between Dec. 16 and Jan. 15, your coverage begins on Feb. 1. If you enroll between Jan. 16 and Feb. 15, your coverage will begin March 1.. 50 percent of Missourians enroll in 2015 health insurance Marketplace plans In just a month since the Missouri MEDICAL HEALTH INSURANCE Marketplace opened, 102,today by the U 087 Missourians enrolled in 2015 health plans according to a written report released.S. Department of Health & Individual Services . Comparatively, 152,335 people signed up for Missouri Marketplace plans during the entire 2014 open up enrollment period.Details of the lifestyle-intervention system have been reported previously8 and are summarized in Section B in the Supplementary Appendix. Site investigators, study personnel, and participants weren’t aware of the assignments to the metformin-alone and metformin-plus-rosiglitazone groups, and study medicine was encapsulated to make sure masking; all participants took the same number of capsules each complete day.