The DCI, in a separate letter dated September 10, 2020, stated that it was conducting investigations into allegations of fraud involving healthcare providers in Kenya.
The investigating officer requested seven documents, including minutes of a meeting between county executive committee members and NHIF managers in the Naivasha.
Authorities are investigating four separate allegations of theft of funds at the national health insurer.
The National Hospital Insurance Fund (NHIF) is also in the spotlight over its new organisational structure that has seen various staff promoted to senior positions without the requisite qualifications and against the parameters laid out by the Public Service Commission for the promotion of public officers to senior positions.