The VA says it already has contacted 50,000 veterans trying to get them quicker medical care.

A total of 57,436 veterans across the country have waited 90 days to see a doctor and still did not have an appointment as of May 15, the VA said. The agency also found evidence that in the past 10 years, nearly 64,000 veterans who sought VA care were simply never seen by a doctor.

"VA is moving aggressively to contact these veterans," the audit report said.

Late Monday night, acting VA Inspector General Richard Griffin told a House committee that his investigators identified "some supervisors" in the department who ordered manipulations of appointment data. Griffin says his office is reviewing with the federal prosecutors whether criminal charges will be filed against the VA supervisors.

The systematic manipulation of appointments records across the massive veterans health care system to show high performance when there wasn't any led former secretary Eric Shinseki to resign late last month.