Illinois recorded 323 providers in the latest CMS NPI registry weekly update, representing 3% of the national weekly total. The registry added 177 new providers this week, including 262 individuals and 61 organizations. That concentration places Illinois among the more active state markets in the update and signals a sizable workforce pipeline for behavioral health hiring, contracting and service development. NPI activity does not, by itself, confirm that a provider is accepting clients or delivering services.

ABA Workforce Mix

The registry lists 19 BCBAs, 57 RBTs and one provider with dual BCBA-RBT credentials. These counts overlap with other credential and taxonomy fields and should not be treated as mutually exclusive shares of Illinois’s provider total. The data also identifies 54 providers with multiple taxonomies. Even with those limitations, the RBT count is three times the BCBA count, indicating a workforce weighted toward direct implementation rather than clinical supervision. Because BCBAs supervise RBTs, develop treatment plans and monitor outcomes, this mix suggests that supervisory capacity could constrain how quickly ABA clinics expand services. One record also carries MA, BCBA and LBA credentials, reflecting the added state-level licensure layer used by some Illinois practitioners.

Demographics and Activity

Among individual providers, 206 are female, 45 are male and 11 are nonbinary, corresponding to 79%, 17% and 4%. Chicago is the leading listed city, followed by Naperville, Downers Grove, Bloomington and Springfield. The update identifies no notable organizations appearing multiple times, so the registry does not point to a clearly repeated employer or provider-chain pattern in this snapshot.

Illinois’s RBT-heavy mix suggests growing frontline ABA capacity, while the smaller BCBA pool makes supervision recruitment central to improving access.