California has 1,897 providers in the latest CMS NPI registry weekly update, accounting for 19% of the national weekly total. That concentration makes the state a major center of recorded behavioral health provider activity. The update lists 1,176 providers added this week; registry entries, however, do not confirm active employment, available appointments or service capacity.

ABA workforce mix

The credential summary lists 98 BCBAs and 1,023 RBTs, alongside 12 providers identified with both credentials. Those categories overlap: dual-credential providers may also appear in the BCBA and RBT counts, so they are not separate, mutually exclusive groups. The RBT count is roughly ten times the BCBA count, a large technician-to-supervisor imbalance. RBTs deliver direct services under BCBA supervision, so the figures point to a broad technician pool but a more limited pool of potential supervisors. They do not establish how many clinicians are currently practicing ABA or how many clients each serves.

Demographics and organizations

The listed population is 69% female (1,228 providers), 18% male (322) and 12% nonbinary (221); these demographics cover the registry’s broader provider mix, not ABA workers alone. Several organizations recur in the notable-organizations data: M A C T Health Board appears three times, while Parish Health and Wellness, Simple Solutions Family Therapy and County of Calaveras each appear twice. The listed totals may reflect multiple records, not separate employers or service sites.

California’s substantial registry presence and RBT-heavy credential mix suggest a large potential direct-care workforce, while BCBA supervisory capacity remains central to whether that workforce can translate into accessible ABA services.