Educational and Developmental Intervention Services (EDIS) Educational and Developmental Intervention Services (EDIS) is located at 1 Pinckney Boulevard, Beaufort, SC 29902. Educational and Developmental Intervention Services (EDIS) Educational and Developmental Intervention Services (EDIS) can be reached by their main phone number at (843) 228-5276. The listed DSN line is 312-335-5276.