MIAMI AP – Federal authorities arrested 32 people, including doctors, in a major Medicare fraud bust Wednesday in New York, Louisiana, Boston and Houston, targeting scams such as “arthritis kits” – expensive braces that many patients never used.

It’s the third major sweep since Attorney General Eric Holder, Health and Human Services Secretary Kathleen Sebelius announced in May they were adding millions of dollars and dozens of agents to combat a problem that costs the U.S. billions each year.