This is not true, and can be trivially observed to be not true by counterexample, viz. looking at other countries that have a hybrid public/private system e.g.

This is not true, and can be trivially observed to be not true by counterexample, viz. looking at other countries that have a hybrid public/private system e.g. here in Australia. Incidentally, "level of care" is almost meaningless in most first-world systems. The difference I experience, due to my private health insurance here, is not in outcomes, but in time to service for elective procedures, and access to private facilities (most notably a private room for overnight/extended hospital stays). And that time-to-service difference vanishes for emergency care. EDIT: additional insider tip. If you have private health cover in such a system, and are being treated for a major medical issue, ask for a private room in a public hospital, because that is where our clinicians spend most of their day-to-day. If you are in a room in a private hospital, there are often no specialist clinicians on site. Whilst this may make no difference for most cases, any sudden complication may be dealt with much more quickly. This is possible in our hybrid system because the hospital is a separate institution from the state and happily does both public and private billing.