Illinois recorded 226 providers in the latest CMS NPI registry weekly update, representing 3% of the national weekly total. The update includes 100 providers added this week and 119 added this year, with 178 individuals and 48 organizations. That concentration places Illinois among the more active state markets in this snapshot. It signals a substantial pipeline of behavioral health participation, although NPI records do not confirm active staffing, caseloads, service capacity or appointment availability.

ABA Workforce Mix

The credential summary lists 8 BCBAs and 32 RBTs, with no dual BCBA-RBT credentials reported. These categories should not be treated as mutually exclusive shares: credential fields and taxonomy fields can overlap, and the registry separately reports 44 providers with multiple taxonomies. The technician-heavy mix indicates more documented direct-service capacity than supervisory capacity. In ABA operations, BCBAs supervise RBTs, oversee treatment planning and monitor clinical quality, so the gap between the two groups may constrain how quickly technician capacity translates into billable, clinically supervised services. The broader credential data also includes substantial representation from other behavioral health disciplines, including 22 LCSWs, 10 LPCs and 10 LCPCs, but those counts describe overlapping registry classifications rather than a single, mutually exclusive workforce breakdown.

Demographics and Organizations

Illinois’s registry records identify 142 female providers, 27 male providers and 9 nonbinary providers, corresponding to 80%, 15% and 5%. Chicago is the leading listed city, followed by Naperville, Evanston, Aurora and Arlington Heights. No notable organizations were flagged as appearing multiple times in the update, although organization and individual records can represent related entities or administrative registrations rather than separate operating sites.

Illinois’s update suggests growing behavioral health participation and a sizable RBT pipeline, while the limited BCBA count highlights the need to expand supervisory capacity for broader ABA access.