The District of Columbia False Claims Act allows whistleblowers who know of violations of the law to file a “qui tam” lawsuit. It has general application, covering many types of fraud against the District, not just healthcare fraud.
A successful whistleblower will receive between 15 and 25 percent of the proceeds in cases where the District intervenes; if the District does not intervene a successful whistleblower will receive between 25 and 30 percent of the proceeds. These amounts may be reduced if the whistleblower planned and initiated the violation.
Read the full text of the law here.