[jtaft]

Call ahead before you go to a doctor’s office or emergency room. Tell them about your recent travel and your symptoms.

https://www.cdc.gov/coronavirus/2019-ncov/faq.html

[yongjik]

Seconded. This is very important - if you just walk into a hospital and later it turns out you had the virus, now they have to close the hospital and quarantine hundreds of patients who are already sick (and hence in higher risk).