A new study suggests that cash-strapped Medicare missed an opportunity to save more than $1 billion by not addressing the varying costs and use of prescription drugs. Comparing Medicare enrollees and those on the U.S. Department of Veterans Affairs (VA) health plan, researchers found that Medicare beneficiaries were up to three times more likely than VA patients to choose higher-cost brand name drugs over generic brands, according to the Annals of Internal Medicine report. "The main issue, and the only way to fix this, is to change what physicians are doing," said Dr. Walid Gellad, a lead author and internist with the VA Pittsburgh Healthcare System and the University of Pittsburgh.