Searching for where to enroll in the Italian Health System and choose your doctors…. The secret word is Distretto. Google Distretto and your commune and it should pop up results for where to go. It is also commonly referred to as the ASL.
To be eligible to register you have to have a Permesso di Soggiorno and have your Residency Card. What you are wanting is “Voluntary Registration”. You are required to pay, but the amount will depend on your Comune. Some will calculate an amount based on your income, some will just charge minimum of 384EU. The amount is for a calendar year, and is not pro-rated. You pay the full amount whether you enroll in January or December.