Economics have forced medical students to abandon primary care. The costs of medical school and the current health insurance system mean that everyone wants to be a specialist. Clark believes that nurse practitioners and physician assistants are the answer to the shortage of primary care doctors -- and the looming shortage of pediatricians. Clark recently read in the Personal Journal about a new program called Doctor of Nursing Practice that's being offered at 200 schools. This doctoral-level program requires nurses to take the same qualifying exam as a doctor. Clark loves that the marketplace is developing an answer to the primary care crunch.