PORTLAND — A Maine nonprofit that helps adults with developmental disabilities and mental health challenges has agreed to pay $74,720 to settle allegations that it improperly billed Medicare and MaineCare.

The U.S. Attorney’s Office said Support Solutions, which has offices in Lewiston and Saco, hired a program manager who had been barred from participating in federal health care programs.

The attorney’s office said the names of those who are barred from involvement with federal health care programs are provided to providers, including Support Solutions, and the organization should have known that the program manager was barred.

The repayment covers bills submitted to MaineCare and Medicare from May 2006 to May 2007 for services provided by the program manager. Support Solutions fired the program manager when the organization learned that the government was investigating allegations involving the organization.

The U.S. Attorney’s Office said Support Solutions cooperated in its investigation.