Some sections of the WCDDA's Web site are for WCDDA members only. When you want to access those sections, you will be asked for your ADA Number and your last name. You must type those in to enter the Members Only sections of the site. If you do not know these or do not remember them, you may send an email here to request your ADA Number. Dentists who are ADA members but not WCDDA members will not be allowed access.