A Texas urologist and his attorney wife who are accused of violating a U.S. trade embargo with Iran have also been indicted on health care fraud charges.
Federal prosecutors in Houston say a superseding indictment returned Thursday names Dr. Hossein Lahiji and Najmeh Vahid. They are charged with health care fraud and conspiracy to commit health care fraud.
The indictment accuses them of having submitted false health care benefit claims since 2003. Prosecutors say Lahiji reported treating as many as 117 patients a day.
The original indictment was returned in January 2011.
Lahiji and Vahid were charged in Oregon in 2010 with secretly sending more than $1.8 million to a children's charity in Iran.
They have denied the allegations.
Prosecutors say the Texas and Oregon charges are not related.