Washington had 293 providers in the latest CMS NPI registry weekly update, representing 3% of the national weekly total. That concentration marks a meaningful share of the week’s recorded provider activity, though NPI records do not establish hiring, staffing levels or appointment availability. The update lists 118 providers added this week and 140 added this year; 267 are individuals and 26 are organizations.

ABA Credential Mix

The credential summary lists 5 BCBAs and 50 RBTs, with no dual BCBA-RBT credentials reported. That is a ten-to-one RBT-to-BCBA count, a profile that points to a much larger technician pool than potential BCBA supervisors in this snapshot. Because BCBAs supervise RBTs, that imbalance makes supervisory capacity important to monitor as the registry grows. The counts should not be treated as exhaustive or mutually exclusive: one provider’s listed credential is “MS, BCBA, LBA” under other credentials, and registry credential and taxonomy classifications can overlap. The data also records 73 providers with multiple taxonomies.

Demographics and Geography

Women make up 194 providers, or 73%; men account for 62, or 23%; and nonbinary providers total 11, or 4%. These figures cover the listed provider population, not ABA practitioners alone. No notable organizations were flagged as appearing multiple times. Seattle, Spokane, Vancouver, Everett and Tacoma are the top listed cities, indicating activity across several urban centers.

Washington’s registry snapshot shows many more RBTs than BCBAs, suggesting that expanding ABA access will depend not only on technician availability but also on sufficient BCBA supervision across the state.