The research was conducted by the Dartmouth Institute for Health Policy and Clinical Practice, and it analyzed Medicare claims from 5.1 million beneficiaries. What's fascinating is that not only were hospitalizations 10% lower, but people over 65 had death rates that were 5% lower, when they lived in a place with a high concentration of doctors.
The data did show that Medicare spent a little bit more on patients in areas with more primary doctors. But I think it's worth it.
Read more in the New York Times: