BROWNSVILLE, Texas -- Two men authorities say passed themselves off as doctors have been indicted on charges of practicing without a license, sexual assault and Medicaid fraud.

Arthur Daniel Hayes, 56, was arrested Tuesday and was being held Tuesday night in the Carrizalez-Rucker Detention Center in Olmito.  The second man, whose name was not immediately released, had not been arrested by late Tuesday.

“They set up with what looked like a doctor’s office. They wore doctors’ coats. They presented themselves as doctors,” Chuck E.  Mattingly Jr., chief first assistant district attorney, said in a story for Wednesday’s editions of The Brownsville Herald.

Mattingly said the men opened fake clinics in Harlingen and San Benito and saw female patients. He declined to name the clinics.

Hayes was being held on bond of $200,000.

Mattingly said the investigation began as a possible case of Medicaid fraud. Hayes is accused of overbilling Medicaid.

Mattingly said the Attorney General’s Office checked credentials and found Hayes did not have a license to practice medicine in Texas. Some of those questioned said Hayes had performed pelvic exams, breast exams and other procedures on female patients.