Can I Get Help With Medical Bills?

Hi there – I was able to get much better and much more reasonable coverage because of the ACA in 2014 and continue in 2015 – a switch to a new provider plus a subsidy. I thought I head or read a bit back that there was a program in place to help with health bills prior to ACA? I have some health bills debt from 2013 that I am still paying off because of my then insurance was really for emergencies with no real financial benefits/coverage for some tests and appointments I had. Thoughts? Is there a program that provides a tax credit, financial assistance etc…to help get rid of my debt or at least assist with decreasing it?