California recorded 1,803 providers in the latest CMS NPI registry weekly update, representing 18% of the national weekly total. The state’s share signals a substantial concentration of behavioral health provider activity in the registry. The update lists 1,114 providers added this week and 1,203 added this year, including 1,670 individuals and 133 organizations. These are registry records, not confirmation of hiring, staffing levels, caseloads or appointment availability.

ABA Workforce Mix

The credential summary reports 70 BCBAs, 930 RBTs and 9 providers with dual BCBA-RBT credentials. These categories overlap: dual-credential providers may be included in the BCBA and RBT totals, so the figures are not mutually exclusive. The RBT count is more than 13 times the BCBA count, a pronounced imbalance between direct-service technicians and potential supervisors. RBT growth can expand service capacity, but BCBAs must supervise RBTs and guide treatment; the relative scarcity of BCBA records makes supervisory capacity an important constraint to watch. The data also reports 325 providers with multiple taxonomies, further evidence that classifications can overlap and should not be read as separate workforce groups.

Demographics and Organizations

Women account for 1,153 providers, or 69%; men account for 280, or 17%; and nonbinary providers account for 237, or 14%. The figures describe the listed provider population, not necessarily ABA workers alone. Two organizations appear more than once in the notable-organizations field: Silver Summit Medical Corporation and Transition-Mental Health Association, with 2 records each. El Segundo, Los Angeles, San Diego, Fresno and San Jose are the leading listed cities.

California’s registry activity points to a large, technician-heavy workforce; improving ABA access will depend not only on continued RBT participation but also on adequate BCBA supervision across the state.