In today's blog item, the Wall Street Journal's Health Blog asks a question worth asking--will it boost the performance of our healthcare system if we throw more physicians into the mix? Given that there seems to be no correlation between the number of doctors in a region and patient outcomes--while there is a correlation between the number of doctors and the amount of healthcare spending--maybe it's better to address how existing physicians are allocated across the U.S., suggests WSJ blogger Jacob Goldstein. Blog