A few months ago, Mazzella began giving consultations and care to people staying at the Alexandria Community Shelter.
Now, he has formed a nonprofit called MedStreet, which is accepting donations and seeking volunteers to help continue his work and help more people.
Mazzella would ultimately like to establish a national model, so even more people living on the streets can get the health care they need.
“The hope is to set up an infrastructure … other docs in other cities can adopt … where we can cut through a lot of these barriers for people,” he said.