But he added that if the Government looked long and hard at the lab companies, it "could probably find some instances of questionable billing practices."

Attorneys general in 22 states have asked several wireless companies to provide information on their advertising and billing practices.

York was one of dozens of teaching hospitals whose billing practices have been reviewed by the government since 1996.

The consultants were advising the corporation on better billing practices.

Some members have expressed complaints about the billing practices of certain dating sites.

Others hospitals have also been accused of inappropriate billing practices.

The university's billing practices are now being examined by state insurance regulators and federal prosecutors.

First, it conducts an audit of billing practices to determine if they are being done correctly.

Prevention of unfair billing practices for information or services provided over toll-free telephone calls.

These companies also were accused of questionable billing practices.