National Council of Disability Determination Directors | Disability NCDDD About Membership Contact Us File Share Members More National Council of Disability Determination Directors Dedicated to Improving the Social Security Disability Program Committed to advocacy through timely and meaningful communication Who We Are NCDDD is a group of DDS administrators and highlevel DDS personnel dedicated to helping improve the Social Security Disability Program. Membership Membership is open to DDS Directors in each of the 50 states the District of Columbia and Puerto Rico. Associate membership is available to select DDS personnel. Click the link below for more detailed information.