Springfield: 217-52 4-DoIT (217-524-3648) Chicago: 312-81 4-DoIT (312-814-3648) Technical Support Week Days (8A-5P, Monday-Friday) Contact the IDPH Helpdesk at 866-220-5247 or via email at DPH.Helpdesk@illinois.gov for Portal access and web-based application support. Please include your name, phone number, and specific application name, detail ....