The building answers on the pharmacy line.

Name: Φροντίδα Υγείας Αγ. Ιεροθέου — κτίριο Σικαλιά
Address: Kyklaminon 7, Peristeri, 12137, GR

7 Kyklaminon Street, 12137 Peristeri
opposite the church of Agios Ierotheos

For a medical appointment: the practice itself, from the directory.