The accountability office is already working on an examination of the military financial services market.
The accountability office plans to release its review on Friday.
According to the accountability office, at least 40 stations ran some part of the Medicare report.
The accountability office, the investigative arm of the Congress, reached a similar conclusion in 2003.
But in its new report, the accountability office says that little seems to have changed at the worst-performing homes.
Employees of the accountability office placed 420 calls to the toll-free line.
The accountability office said in its report that the agency's responses so far might help "but will not address all gaps."
The accountability office declined to provide a copy or to discuss the draft.
The accountability office does not have law enforcement powers, but its decisions on federal spending are usually considered authoritative.
This may have resulted from the agency being unclear about its role in disaster planning, the accountability office said.
