Bring a Mask with You to Your Appointment Make an Appointment Ask a Question Find a Doctor National Jewish Health requires all employees, patients and visitors to wear a mask at all times. Wearing a mask protects others around you from your germs. It’s important that we all do are part to keep everyone safe. View Flyer If you do not have a mask, one will be provided to you to wear during your visit. Cloth masks and surgical masks are approved to wear. Masks with exhalation valves/buttons are prohibited. Make sure to cover both your mouth and nose with the mask. DO NOT remove your mask unless instructed for testing or otherwise. DO NOT pull the mask down under your chin or up over your forehead. If you touch your mask, wash your hands or use hand sanitizer immediately. Thank you for your cooperation.