The Scally Review into the CervicalCheck Screening Programme cost more than €1 million.
The Scoping Inquiry into the CervicalCheck was set up in May 2018 after the legal case involving Vicky Phelan, who got 2.5 million euro over an incorrect smear test.
After follow-up work was complete, Dr Gabriel Scally's inquiry finished in June.
Documents released under the Freedom of Information Act show the total cost of the project was just over €1 million.
Gabriel Scally Consultants Limited has submitted five invoices to the Department of Health.
They include fees of €145,000 to Dr Scally personally, €58,000 for legal advice and €43,000 for work carried out by Q4PR, a communications agency.
The Crowe consulting team helped with logistical, project-management and other support work during the review - its costs came to just over €400,000.