Medicare for all could be financed by raising taxes on the following things:

Tanning Salons

Oil used for deep-frying

Cigarettes

Alcohol

Sugar and High Fructose Corn Syrup

Gasoline  -- especially because it gives people an incentive to WALK when they're going less than 2 miles to a store, instead of driving.

Coal

Natural Gas

Beef

Pork

Junk Food in general

These taxes would have the additional effect of dramatically reducing our need for healthcare on average.