They are not accepted without compulsory medical insurance. OK, please, here's my MHI. There are warnings posted everywhere that all compulsory medical insurance services are free. And the doctors are provided with all the necessary materials. But in the doctor's office, "it will cost 2,500..."... for a tiny filling. Have you eaten too much fish soup there?! What if firefighters or police officers on your calls also start demanding 2,500rubles?