Medicaid is like an ATM machine for providers in many states. There is usually little or no correlation between outcome and payment, and poor fraud controls. That’s why you always hear about providers in NYC and Miami who “visit” 900 patients a day. Additionally, you have the institutional racism aspect of Medicaid where services are unavailable in some red states.
IMO, the biggest issues in healthcare are for profit institutions and insurers and the trade guild practices associated with Doctors.
Single payer or regional systems supported by taxes are the way to go. Medicaid should be an institution that is replaced by something better.