Take social security as an example, all hospitals that require minimum reimbursement requirements must be first-class hospitals (community hospitals), which is true. Looking for a small private clinic, it really won't be reimbursed. In addition, buying medicine at your own expense will not be reported.

Commercial insurance is more demanding. It must be a hospital designated by the company, generally at least a second-class hospital, so you must be careful not to be careless when you see a doctor.