Illinois recorded 390 providers in the latest CMS NPI registry weekly update, representing 4% of the national weekly total. The registry added 230 new providers this week, including 337 individuals and 53 organizations. That concentration marks Illinois as one of the more active behavioral health markets in the update, with provider growth likely to affect hiring, contracting and service availability. NPI activity does not confirm active caseloads, staffing levels or open appointment capacity.

ABA Workforce Mix

The credential data lists 18 BCBA credentials, 93 RBT credentials and one dual BCBA-RBT credential. These categories overlap and are not mutually exclusive shares of the provider total: credential and taxonomy fields may classify the same provider differently. The large gap between RBTs and BCBAs points to a direct-service-heavy ABA workforce, with comparatively fewer credentialed supervisors. Because BCBAs supervise RBTs, design treatment programs and monitor clinical quality, supervisory capacity could limit how quickly Illinois clinics translate technician growth into expanded ABA access. The single dual credential suggests that advancement across technician and supervisory roles is visible but uncommon in this update.

Demographics and Organizations

Gender data identifies 286 providers as female, 42 as male and nine as nonbinary, corresponding to 85%, 12% and 3%. The leading cities are Chicago, Darien, Naperville, Wheaton and Crystal Lake, showing activity concentrated across the Chicago area and surrounding suburbs while also extending statewide. Catholic Charities of the Archdiocese of Chicago appears twice in the registry. Repeated organizational entries represent separate NPI records, not necessarily separate employers or equivalent clinical capacity.

Illinois’s strong RBT presence and limited BCBA pool suggest continued workforce expansion, with supervision capacity remaining a key constraint on ABA access.