A busy screen is shown on the laptop of a Certified Application Counselor as he attempted to enroll an interested person for Affordable Care Act insurance in MiamiRound-the-clock efforts to improve the bothered federal site, HealthCare.gov, have elevated efficiency across the site, a senior administration professional stated. Henry Chao, the deputy chief data officer at the Centers for Medicare and Medicaid Services and products, mentioned in written testimony to a Home of Representatives committee that the administration is getting ready to enlarge the functionality of the web site's client buying subsidy estimation software.