Try type address :
"100 Ralston Rd, San Gregorio, CA 94074"
to see if this address is eligible for hrsa rural health grant fund.
https://transparentgov.net:3200/googlemaps101/default?layer_id=0&layer=Rural+Health+Area¢er_lat=38.23978530174724¢er_long=-122.06133880715652¢er_zoom=9&url=https%3A%2F%2Fgisportal.hrsa.gov%2Fserver%2Frest%2Fservices%2FAnalyzerTool%2FAnalyzerTool%2FMapServer&overlayType=overlayType_none&panto=0
Result is eligible (this address does intersect with rural health area polygon)
"3300 Tripp Rd, Woodside, CA 94062"
https://transparentgov.net:3200/googlemaps101/default?layer_id=0&layer=Rural+Health+Area¢er_lat=37.34544071158848¢er_long=-122.40058736801531¢er_zoom=14&url=https%3A%2F%2Fgisportal.hrsa.gov%2Fserver%2Frest%2Fservices%2FAnalyzerTool%2FAnalyzerTool%2FMapServer&overlayType=overlayType_none&panto=0
Result is not eligible (not intersect with rural health area polygon)
https://transparentgov.net/json2tree/esri/server/folder.html?org=https%3A%2F%2Fgisportal.hrsa.gov%2Fserver%2Frest%2Fservices&url=https%3A%2F%2Fgisportal.hrsa.gov%2Fserver%2Frest%2Fservices&select_folder=106&select_layer=0&arcgis_online_token=
Official tool is here, very hard to use, you have to type full address, then click search button at bottom
https://data.hrsa.gov/tools/rural-health?tab=StateCounty
Results is here, this is esri map, not good as previous google map.