So far in my office the ACA has essentially been the Medicaid expansion act. Many new Medicaid patients but not many through private insurers. I think for many people the new plans are still just too expensive.
For the people that had catastrophic plans before, the new catastrophic plans are often more expensive since they are filled with the mandatory health maintenance and other provisions. We can debate whether that's good or not but the bottom line is that for many patients the Affordable care act is less affordable.