Chad Diaz began using heroin when he was 12. Now 36 and newly covered by Medicaid under the Affordable Care Act, he is on Suboxone, a substitute opioid that eases withdrawal symptoms and cravings, and he is slowly pulling himself together.
“This is the best my life has gone in many, many years,” Mr. Diaz, a big man wearing camouflage, said as he sat in a community health center here.