As the population ages and fewer medical graduates are choosing primary care, the demand for internists has jumped 46%--and 55% for family physicians--from March 2005 to April 2006, according to physician recruiting firm Merritt, Hawkins & Associates as reported in an AP story. And as demand keeps rising, so will salaries. In the past few months, internists’ salaries--the average is $162,000--have increased 10% to 15%, according to a Merritt Hawkins executive.