California recorded 1,828 providers in the latest CMS NPI registry weekly update, accounting for 18% of the national weekly total. The registry includes 1,017 new providers this week, making California the largest concentration represented in the update. That scale signals a major behavioral health market, with enough provider activity to influence regional hiring, contracting and access trends. The registry lists 1,722 individuals and 106 organizations, although NPI activity does not necessarily represent active clinical capacity or completed service availability.

ABA Workforce Mix

The credential data lists 91 BCBA credentials, 832 RBT credentials and 11 dual BCBA-RBT credentials. These categories overlap and should not be treated as mutually exclusive shares of the provider total; credential and taxonomy fields can describe the same provider in different ways. Even with that limitation, the pattern shows a much larger direct-service RBT workforce than BCBA supervisory workforce. Because BCBAs oversee RBTs, develop treatment plans and monitor clinical quality, the gap points to a potential supervision bottleneck as California’s ABA workforce expands. The dual-credential count also shows some movement between entry-level direct service and advanced clinical roles.

Demographics and Provider Activity

Gender data identifies 1,263 providers as female, 288 as male and 171 as nonbinary, corresponding to 73%, 17% and 10%. The gender counts total 1,722, matching the number of individual providers. San Diego, Los Angeles, Arcadia, El Segundo and Monrovia lead the listed city activity. Repeated organizations include Lighthouse Counseling and Family Resource Center, appearing four times, while Virtue Therapy Licensed Clinical Social Worker, PC; Turning Point of Central California, Inc.; Pomelo CA, PC; Best Physical Therapy and Wellness, Inc.; and Dan B Tran Medical Corporation each appear twice.

California’s strong RBT presence suggests expanding ABA service capacity, but the smaller BCBA pool indicates that clinical supervision—not direct-service recruitment alone—will shape future access.