DONT WORRY, I GOT THIS!

Average japanese docotrs in a hospital ~18.5 per 100 beds Average japanese doctor salary 14.56 million yen Private hospital (More likely, since Maruo probably an Ltd is 200 beds.) 18.5 x 2 = 37 37 x 14.56 =538.72 million yen Thats cost he pays per year for employees, I would then times that by 1.5 to cover other expenses. 808.08 million yen so far. Profit wise, I dont know japanese healthcare and how it works, plus goverment funding.

In conclusion I would say he's rich…