Coming into Javea from the south, you will hit the Barclays Bank roundabout. Drive north on the main road. The Plaza is opposite Humpty Dumpty's paper shop. The clinic is at the far left-hand corner of the Plaza, through a small passage way.
You can park on the main road after you have passed the dual carriageway. Or you can drive past the Plaza and take a sharp left, into the Calle de Saint-Etienne. From this road, you can go straight to the main entrance to the clinic (the last entrance on the right).