An eight-week wait for patients of Dr John Grygiel is expected to end Tuesday.
NSW Health Minister Jillian Skinner will release the report at 10.30am at the Orange Health Service.
The report investigates Dr Grygiel treatment practises for patients at Orange, Bathurst and from across the Central West.
A report into Dr Grygiel’s treatment in Sydney revealed St Vincent’s Hospital had failed to act on chemotherapy dosing errors.
Ms Skinner said St Vincent’s had lied to the public.