This US government agency is focused on bringing health access to those who are uninsured, isolated, or otherwise vulnerable. The HRSA Data Warehouse has great data to inform your decisions, but it also has a Health Center database. I suggest looking for free health centers in your community to partner with!
 
https://data.hrsa.gov/
https://findahealthcenter.hrsa.gov/?hmpgtile=hmpg-hlth-srvcs