Boston ? A man pleaded guilty Wednesday to his role in a multistate scheme in which prosecutors say he and his wife intentionally ate glass at restaurants and collected more than $200,000 in compensation.

Ronald Evano, 49, pleaded guilty to 20 federal counts, including conspiracy, mail fraud, wire fraud and identity theft. Prosecutors dropped four counts of identity fraud and health care fraud in the plea agreement.

Prosecutors say Evano and his wife, Mary, filed fraudulent insurance claims worth more than $200,000, collected more than $200,000 and left a trail of unpaid medical bills totaling more than $100,000 in several states between 1997 and 2005.

Prosecutors said the two were treated at hospitals for glass ingestions at least a dozen times. They collected payments from insurance companies but never paid their hospital bills.