ADAP Illinois Customer Service Numbers Home» ADAP» ADAP Illinois Customer Service: +1 (217) 785-8013 Eligibility Status: +1 (800) 825-3518 Substantial Amendments: +1 (217) 524-5260 Corporate Office: Illinois Medication Assistance Program 525 W. Jefferson Street, 1st Floor Springfield, IL 62761Problem Solution Problem Solution: Adap Illinois has provided answer to all possible quires on their web portal that covers common issues & problems, instructions, guidance, etc.Locations Near You: Find nearby locationsFollow the directions to locate ADAP IllinoisADAP Advocacy Association is a national 501(c)(3) not-for-profit association consolidated in the District of Columbia to advance and upgrade the AIDS Drug Assistance Programs (ADAPs) and enhance access to administer to persons living with HIV/AIDS. The Adap Illinois renders the best quality of products such as Advocacy, Education, and Information.