He has a 24 per cent stake in Asia Renal Care (ARC), a Singapore company that runs KDF's centre in Bishan. The other two KDF centres are run by United States-based healthcare service providers Fresenius Medical Care and Baxter.
Dr Ku, who receives no pay for being KDF chairman, was forthright when Today approached him about the issue.
"At first glance, this may look like a conflict of interest. But not when you hear the background of how it came about. It's up to the individual to decide," he said.
On a quick read, this one didn't pass the sniff test for me, but I'd be curious to know what you think.