Here are a few articles that discuss the fact that patients either weight elements of physician interactions that have nothing to do with technical competence such as appearance or that patient satisfaction has little to do with actual quality of care delivered.
Patients perceptions of the quality of their hypertension care does not correlate with the quality as judged by reviewing the record.
http://www.bmj.com/cgi/content/abstract/333/7557/19
Patients were unable to accurately rate their quality of care
http://www.annals.org/content/144/9/665.abstract?sid=96a0838c-dc16-4a61-bd78-0ec7af80d492
Patient satisfaction does not equate to quality of care in MI
http://circ.ahajournals.org/cgi/content/abstract/CIRCULATIONAHA.108.792713v1
AAFP review article that notes that patients heavily weight non technical physician qualities such as communication, appearance, time spent and willingness to listen more than compentency.
http://www.aafp.org/fpm/2007/0100/p33.html
I just sat through 2 days of Studer Group material so these were the ones fresh in my mind.
There have been others that show patients rate foreign doctors delivering correct care worse than American doctors delivering bad care and so on. Patients dont have a clue. They base their likes and dislikes on stuff that has nothing to do with correct care and certainly nothing to do with their doctors intelligence.
After the brain drain any doctor that is marginally competent but a snappy dresser and a charming conversationalist will be just fine.