Usage patterns
〈人〉が病院に行くfor someone to go to the hospital/clinic
I had a fever, so I went to the hospital.
〈人〉が病院に運ばれるfor someone to be taken to the hospital
The person in the accident was quickly taken to the hospital.
病院に通うto go regularly to the hospital/clinic for treatment
I hurt my back, so I go to the clinic every week for treatment.
病院で働くto work at a hospital
My older sister works at a hospital in the city.