USTA is in Salamanca. Tap the map or the "Get directions" button to see the exact location and the route from your position.
Yes, USTA's official website is usta.es. You'll find the direct link in the "Website" section of this listing.
On this listing you can see "Other clinics nearby" right below, sorted by proximity. You can also open the full clinics in Salamanca page for the complete map ranked by distance from your location.