LOS ANGELES—California reached record health insurance coverage in 2020, with 94 percent of people covered, but fewer people received routine check-ups primarily due to concerns over the COVID-19 pandemic, according to a survey released Wednesday by the UCLA Center for Health Policy Research. The 2020 California Health Interview Survey includes data from 22,661 California households, including 21,949 adults, 1,365 adolescents, and 3,548 children. Of adults participating in the survey, 67.9 percent had a preventive care visit in 2020, down from 71.1 percent in 2019 and marking the lowest number since 2013. COVID-19 was the main reason participants delayed or went without medical care in 2020, with 21.6 percent saying it was because of the pandemic. For adults 65 and up, 55.2 percent said COVID-19 was the main reason for delaying or forgoing medical care. “This is one of the most important data releases in the survey’s 20-year history because it …