Here is more from today. Yomiuri : Tokyo hospital may lose special rating

The Health, Labor and Welfare Ministry decided Saturday to consider nullifying the designation of Tokyo Medical University Hospital as a special institution providing advanced treatment because of the deaths of four patients after heart valve operations involving the same surgeon.

Ministry officials pointed out that there had been numerous medical accidents, in addition to the deaths of the four patients, at the hospital in Shinjuku Ward, Tokyo.
For those who don't know, the Tokyo Medical University Hospital is considered by many Japanese as the medical institution par excellence. There are always long queues due to its popularity and people come from as far as Hokkaido and Okinawa to be treated there, because they don't trust other hospitals.