Spending on health care continues to rise with up to 30 percent of the total due to overuse of drugs, tests, and treatments. To begin attacking this complex problem, a group of physicians has proposed a simple solution: Talk before you test. Darilyn Moyer, an internist at Temple and one of the paper's authors, said that when her patients want a test that she believes is not necessary, she pushes hard to find out the source of their belief.