Illinois recorded 269 providers in the latest CMS NPI registry weekly update, representing 3% of the national weekly total. The state added 131 providers this week, including 217 individuals and 52 organizations in the reported provider base. That concentration places Illinois among the more active state markets in the update and signals a sizable, expanding behavioral health infrastructure, particularly across the Chicago metropolitan area.

ABA Workforce Mix

The registry reports 13 BCBA credentials and 41 RBT credentials, with zero dual BCBA-RBT credentials. These credential and taxonomy categories can overlap and are not mutually exclusive shares of the 269-provider total; the broader registry also includes social workers, counselors, psychologists and speech-language pathologists. Even with that limitation, the RBT-to-BCBA pattern indicates a larger direct-service workforce than supervisory workforce. Because BCBAs oversee RBTs and direct clinical programming, the mix points to potential pressure on supervision capacity as ABA staffing grows.

Demographics and Activity

Gender data identifies 176 providers as female, 34 as male and 7 as nonbinary, corresponding to 81%, 16% and 3%. Those counts total 217, matching the number of individual providers. Chicago, Naperville, Oak Park, Oak Lawn and Aurora appear among the leading cities, showing strong concentration in the northeastern portion of the state while activity also reaches communities including Peoria, Springfield, Rockford and Kankakee.

Saint Anthony Health Affiliates is the only organization named repeatedly in the notable-organizations field, appearing twice. Overall, Illinois’s registry activity suggests expanding ABA access and a growing RBT pipeline, but limited BCBA representation could constrain how quickly that workforce can be supervised and deployed.