The North Carolina Early Intervention Branch is a part of the N.C. Division of Public Health. It is the lead agency for the N.C. Infant-Toddler Program (ITP). The Infant-Toddler Program provides support and services for families and their children, birth to three who have special needs or are at risk for having developmental delays. In Raleigh, the Children's Developmental Services Agency (CDSA) is located at 1100 Navaho Drive, Suite 100, Raleigh NC 27609. Phone 919-662-4600. ​FAX 919-662-4473.