Medical Care
If you are a Serbian citizen or a resident of Serbia then you have free health care at the public clinics and hospitals with your health care card. But as a visitor, you still have inexpensive options.
There are several clinics throughout the city. I have found Euro Medic to be one of the best, that has just about every specialty and the newest equipment. Again probably best to work with the hotel you are staying in as the clinics are often specialties. So the internal medicine clinic is one place and the orthopedic is at another.
They have two full hospitals and ER and urgent care facilities. Often with signs throughout the city directing you to the correct location. A doctor visit will generally be between $25 and 30 dollars. They will often try to add on procedures that you might not need at the time. They are big on Sonograms for example and while if you were getting a real check-up perhaps but if you just need immediate treatment probably not worth the extra cost.
Most of the doctors there also practice at the public clinics and this is how they make extra money. It is funny to me until you think about it a bit but the waiters in the restaurants speak better English than many of the Doctors and Nurses. Sometimes you find a physician that studied in the US. My wife had one that wanted to talk about Georgia football where he went to school.
It would be wishful thinking that no one ever needs medical services but here are a few ideas if you do. I am sure medical travel insurance will also cover the private clinics.