Patients to trial sites, privately
Where patients live is health data. To plan sites you need distances and counts, not addresses on someone else's server.
Distances on your machine
gridpin nearest patients.csv sites.csv --sheet usa.bin -o patients_to_sites.csv
nearest geocodes the patients and gives each the nearest site and its distance in a straight line. Nothing is sent anywhere.
What to share
Share counts by cell (--aggregate h3:7) or distances without points. See patient addresses and publishing.