In order to import records you need two things:
You need to add the Healthcare Facility into Huddle by creating that item.
After you have created the facility, if Huddle has a connection with it's patient portal you will see an Import button where you can login. If you don't know your login information, you should contact the facility directly for this information.
Huddle is working to get access to all patient portals in the US. If you have a portal login but you don't see the option to import, you will be notified once it is available.