The percentage of healthcare organizations offering portals rose from 43% in 2013 to 92% in 2015. 4, 23, 24 As availability has increased, more patients have used portals. 25-28 In the United States (US), self-reported use rose from 17% in 2014 to 28% in 2017. 29, 30 Multiple factors have contributed to the increase in portal availability ....