Punitive taxes will prevent people from polluting, eating too much sugar, using alcohol and tobacco, and then those taxes can be used for healthcare for all. A carbon tax on corporations will prevent pollution, which puts the entire world population at risk for disease.
Also, a lot of charities are using money inappropriately and not helping people. You could setup a government charity that counts for tax writeoffs, lower the tax writeoffs for other charities, and all that money goes into healthcare for all.
Then, lastly, you could set up a premium program where wealthy people can get a deal on healthcare if they invest a lot of money all at once in their healthcare. People will essentially be punished for not managing their money well.
These three combined actions would make medicare for all very cheap and insurance companies covering high risk people a null initiative. Government competition with private charities will make private charities compete harder to actually help people, lowering private charity corruption.
I have many more ideas but I hope this helps someone.
Most capitalists don't know that you can't become rich without doing the opposite of Jesus Christ's golden rule. Maybe that's why rich folk don't go to heaven.