>>Is he a practicing MD? And does he practice in the U.S.?

You have no idea what I do in the US. Clearly.

>>Perhaps you can explain why most surveys of licensed and practicing physicians in the U.S. generally disagree with most aspects of ACA

Sorry but the answer cannot be given as a single-table select and it's no use cherry-picking just the ACA parts- at a minimum you need to review responses re ICD-10 and electronic health records. Also there are less obvious cues. E.g. self-employment by US doctors was 62% in 2008, 49% in 2012 and 35% in 2014. 53% of physicians describe themselves as "employees" in 2014. Why does this matter? Because "employee" doctors no longer have to care about the bureaucratic meanings of change. Prediction: in the next survey, fewer physicians will express strong opinions about the ACA or anything much to do with healthcare bureaucracy at all. They don't need to- the overwhelming reason to become employees was to escape the bureaucracy.