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=85&select_layer=0
1) look for any 'dynamic layer v10.9+ required'
2) JSON string is here
https://transparentgov.net:3200/googlemaps18/default?layer_id=0&layer=Health+Care+Service+Delivery+Sites¢er_lat=39.001263822000055¢er_long=-79.11724281499995¢er_zoom=20&url=https%3A%2F%2Fgisportal.hrsa.gov%2Fserver%2Frest%2Fservices%2FHealthCareFacilities%2FPrimaryHealthCareFacilities_FS%2FMapServer&overlayType=overlayType_image&panto=0&outlineColor=9
3) Click "text" button to copy