A Baton Rouge businesswoman and two of her employees were indicted Thursday on federal charges of health-care fraud totaling at least $349,715.

Sonya Lewis Williams was based in Baton Rouge, but operated two Alexandria companies that were Medicare providers, the indictment alleges.

Those companies were Fusion Services and Grace Social Services, according to the indictment obtained by Assistant U.S. Attorney Catherine M. Maraist.

Fusion employed two licensed clinical social workers who allowed their Medicare provider numbers to be used by Williams to defraud the health insurer for the elderly and disabled, the indictment alleges.

Carla M. Clark and Lillie Lavan are accused of assisting Williams in the preparation and submission of false billings to Medicare for face-to-face psychotherapy services that were never provided to patients.

Those false billings totaled $1.2 million between May 2006 and September 2010, the indictment alleges.

Williams actually received $349,715 from Medicare and shared that money with Clark and Lavan, according to the indictment.

The indictment states that unnamed other individuals also participated in the alleged scheme to defraud Medicare.

Some of the patients listed as receiving face-to-face psycho-therapy died prior to the service dates for which Medicare was billed, the indictment alleges.