In a bid to cut Medicare spending and help pay for health-care changes, the Obama administration has significantly expanded audits designed to recover improper payments from health-care providers. "We are taking, I would say, a brutal spanking, those that are fully compliant and within regulation," said Tim Fox, founder and chief executive of Fox Rehabilitation, a Cherry Hill company that provides physical therapy and other services to the elderly. "It's dead easy to commit fraud under Medicare, and that's why there's so much fraud and abuse out there," Fox said. He said the government was "cracking down" to help pay for the expansion of health coverage under the Affordable Care Act.