FORT DEFIANCE - The Nahata’Dziil Health Center Dental Clinic will be closed on May 18-20 and Friday, May 22, from 8 a.m. to 4:30 p.m. For dental emergencies, call Tséhootsooí Medical Center Dental Clinic at 928-729-8911 or 8885. For information regarding NDHC appointments and services, call 928-688-5639.