In Paris, there are many hospitals to choose from. What Paris lacks in however is places to park, especially when you're looking for a cheap one.
To help you out a little if you want to park near the Salpêtrière hospital, ParkingsdeParis offers several low-cost car parks in the vicinity. You can choose the one you want, reserve your space, and that way when the day comes you won't have to worry about anything. Whether you need to stay in hospital overnight or you’re visiting someone close to you, your secure space will be waiting for you. You can reserve your space for a few hours, several days or a whole month, depending on your needs!
The Pitié-Salpêtrière Hospital is accessible from 47 or 83 Boulevard de l'hôpital. You can also enter via 52, Boulevard Vincent-Auriol during opening hours, or via Rue Bruant. This hospital in the 13th arrondissement is one of the largest in Paris and the list of its specialities is long - very long.
If you arrive by metro, you should know that the hospital is literally surrounded by metro stations: Chevaleret, Quai de la Gare, Nationale, Campo-Formio, Saint-Marcel, and of course the Austerlitz station which is also served by RER trains. If you arrive by car from the west, you will probably have to go through the Place d'Italie; if you arrive from the right bank, cross the Bercy bridge or the Austerlitz bridge.
You have enough worries as it is: there's no need to worry about parking problems!