Developmental Center of the Ozarks » Related Private Organizations Go back to directory. Add to Address Book. Developmental Center of the Ozarks Developmental Center of the Ozarks Contact: Marisa DeClue, Executive Director 1545 E. Pythian Springfield MO 65802 work Phone: (417) 829-0896work Email: mdeclue@dcoonline.comINTERNET Website: www.DCOonline.com Categories: RPO Updated 3 weeks ago.