There seem to be a lot of people confused about NYC's new municipal health plan, along the lines of "did't we already treat uninsured persons at H+H facilities?" Let me take a stab at answering 1/5
Short answer is yes, anyone can walk into a H+H hospital for treatment and can pay on a sliding scale if they are low-income and uninsured. BUT this is inefficient and impersonal5. They don't have a primary care provider who does preventive checkups and knows their chart 2/
There's no framework in place to keep them doing regular tests and checkups and to connect them to specialty care when needed. An access-to-health plan, such as the former ActionHealth NYC pilot, incentivizes people to see a doctor *before* they have some acute condition 3/5
It also keeps them connected to care for chronic conditions, and keeps their primary care provider and specialty providers all under the same managed-care system. Less friction, easier to diagnose things, higher likelihood of seeking care preemptively instead of the ER 4/5
Here are summary sections from the @AIR_Info final report on ActionHealth, based on medical data and patient/provider interviews. The idea isn't that care is wholly inaccessible, but that a managed care plan makes it better, more effective, and ideally cheaper in the long run 5/5 
