As much as I hate the American health care system as a senior citizen, there is an out of pocket maximum that you can budget for if you have all of the parts.

From what I understand it’s Medicare Part A+B and either Part C or Medigap.

Of course private insurance especially for older Americans like Part C and Medigap is Byzantine if you actually need it and some doctors don’t accept Medicaid (low income) and a few don’t even accept Medicare.

I don’t know much from either first hand or second hand experience because my mom and dad (83 and 81) are under my mom’s teacher’s retirement insurance and between them (two pensions + social security) medical expenses are more of a nuisance than something that they stress about.