A photo of Lopez giving birth, taken by a witness, has given the case greater attention after running on the front page of several newspapers.
"The photo is giving visibility to a wider structural problem that occurs within indigenous communities: Women are not receiving proper care. They are not being offered quality health services, not even a humane treatment," said Mayra Morales, Oaxaca's representative for the national Network for Sexual and Reproductive Rights.
The 29-year-old Mazatec mother was admitted to the clinic following the birth of her son, and although she was discharged on the same day, health officials say she and her baby are doing well.
"I am naming him Salvador," Lopez told AP, which is a name that means "Savior" in English. "He really saved himself."