The group marched seven miles from Our Lady of Guadalupe Mission to Northwestern Memorial Hospital while carrying caskets representing undocumented immigrants who have died because they were denied care by hospitals.
They say they shouldn't be denied critical health care just because they are uninsured.
"He call us and deny us, they require a social security number or insurance and that's not fair that they put up paper over our lives," said Blanca Gomez.
Northwestern Memorial Hospital says undocumented patients can be added to transplant lists.
Protestors say they have yet to see proof of a policy change.