The vast majority of those interred at Bethel Burying Ground were poor working class men and women who relied on the free clinics (dispensaries) for their family’s healthcare needs. These clinics were spread across the county and provided office visits and home visits if necessary. Below are links to better understand the system and the physicians who voluntarily provided their services.
http://philadelphiaencyclopedia.org/archive/dispensaries/
https://southwarkhistory.org/2017/09/treating-the-poor/
Pencak, William. “Free Health Care for the Poor: The Philadelphia Dispensary.” Pennsylvania Magazine of History and Biography 136 (January 2012): 25-52.