The United States already faces a growing physician shortage. As our population ages, we require more and more intensive health care. At the same time, enrollment in medical schools has been essentially flat, meaning we are not producing new physicians at anywhere near the rate we need to. In fact, according to the American Association of Medical Colleges, we face a shortfall of more than 150,000 doctors over the next 15 years.

And it could get a whole lot worse.