There's a shortage of primary care doctors and it's getting worse. Sen. Chuck Schumer says he has at least a partial solution. He will introduce an amendment to the Senate health-care bill that would add 2,000 new medical residency slots.

While well-intentioned, Schumer's idea seems unlikely to make much of a difference. There isn't even enough interest among qualified young docs to fill existing residency slots. Hundreds of slots went unfilled this year and graduates of foreign med schools filled many of the available positions.

Docs Tend to Follow the Money

Furthermore, doctors who go through residencies in internal medicine often choose do further training in a sub-specialty, rather than practice as primary-care internists. They do so, in large part, because many sub-specialties have higher pay, higher status and, in some cases, better hours. Adding more residency slots won't change that.

$50,000 Educational Loan Repayment Could Help

The shortage of primary-care doctors is especially acute in underserved rural areas. Doctors finishing up their residencies tend to gravitate to places where there are already lots of other doctors, not to places where physicians are scarce. Pointedly, there are other provisions of the health-care legislation that could encourage more young doctors to go into primary care and to move to the places where docs tend to be scarce. The Senate bill increases funding for the National Health Service Corps, which helps repay student loans for docs and other providers who work in underserved areas. Primary-care doctors who participate can get up to $50,000 of loans repayment.