Arnold Kling' useful framework of describing how libertarians,conservatives and progressives see the world is thoughtful and has more than a little predictive value.The progressive's lens is shaped to see things in terms of the oppressed and the oppressor while the libertarian tends to see things in terms of freedom and coercion and the conservative sees the world often in terms of the civilization and barbarism.He calls this notion the Three Axis Model and is available on Amazon in an inexpensive Kindle format.
Applying this to the issue of concierge or retainer model of medical practice ( also known as Direct Paitent Care Plan or DPCP) the recent response of the ACP ( see here) fits well with the progressive view which I claim is their default analysis for many issues.
(Mr Bob Dohrty , who is the senior VP of government affairs and public policy of the ACP, inexplicably has denied my claim that their policies are progressive. See here.)
In regard to concierge practice or DPCP, ACP said in part " it must be recognized that DPCPS potentially exacerbate racial,ethnic and socioeconomic disparities in health care and impose too high cost on some lower income patients".
The progressive view sees things in terms of the oppressor-oppressed model and often uses a defining metric of inequality along some or other parameter. IMHO It seems that ACP thinks most everything about medical care is all about social justice.