Eastern Washington will need almost 1,000 new doctors by 2025, and to fill that prescription the University of Washington School of Medicine should quadruple, if not quintuple, the number of students on its Spokane campus, according to a report issued this week. Even if the school immediately began ramping up the present enrollment of 20, the report says, additional graduates would not be practicing medicine until 2017. It will take another seven years to get the optimal output of 100 students into clinics and hospitals.