The federal NPI registry lists 29 organizations in Littleton carrying the Behavior Analyst taxonomy code — 3.0% of everything registered in Colorado.12 Every one is listed below.
| Organization | Phone | NPI | Registered |
|---|---|---|---|
| ABA Magical Moments Co LLC | (323) 578-2618 | 1780414318 | 7 August 2024 |
| Ablelight Inc. | (303) 795-2061 | 1093329971 | 8 September 2020 |
| Action Behavior Centers Therapy LLC | (720) 439-3800 | 1669336996 | 11 December 2025 |
| Action Behavior Centers Therapy LLC | (720) 259-5503 | 1699630079 | 18 December 2025 |
| Action Behavior Centers, LLC | (720) 439-3800 | 1891454559 | 9 December 2021 |
| Action Behavior Centers, LLC | (720) 259-5503 | 1225838303 | 17 March 2025 |
| Actualize Behavior Alternatives | (720) 775-0151 | 1033917398 | 4 March 2025 |
| Archer Behavior Services | (303) 908-9097 | 1093584229 | 28 December 2023 |
| Behavioral Connections of Colorado | (720) 491-8171 | 1427674969 | 20 June 2020 |
| Blue Iceberg LLC | (651) 214-0197 | 1528882453 | 7 November 2024 |
| Center for Autism and Related Disorders | (818) 345-2345 | 1881366094 | 5 October 2021 |
| Colorado United Psych LLC | (201) 706-1143 | 1982570081 | 15 October 2025 |
| Confluence Behavioral | (605) 641-1080 | 1942075239 | 16 November 2023 |
| Havern School | (303) 986-4587 | 1689370330 | 3 February 2023 |
| Behavioral Innovations | (720) 642-7019 | 1720601602 | 26 May 2020 |
| Behavioral Innovations | (855) 782-7822 | 1013531631 | 29 May 2020 |
| Mountain Top Behavioral Solutions | (720) 933-4187 | 1164396446 | 1 October 2025 |
| Mountain Top Speech & Language | (720) 933-4187 | 1982447520 | 13 June 2024 |
| Novus Behavior Associates LLC | (720) 432-0338 | 1073058277 | 23 December 2016 |
| Center for Autism and Related Disorders | (818) 797-5902 | 1730862509 | 9 August 2023 |
| Perpetual Learning Communities | (770) 851-8903 | 1023863883 | 23 April 2024 |
| Rmw Ltd | (479) 244-7101 | 1629823083 | 19 April 2024 |
| Simps Psychology, LLC | (720) 468-0093 | 1447970223 | 31 August 2022 |
| Willow ABA Services LLC | (720) 316-7614 | 1205466612 | 24 January 2020 |
| Willow ABA Services LLC - Golden | (720) 319-7614 | 1679240667 | 26 August 2021 |
npidata_pfile_20050523-20260712.csv.file dated 12 July 2026; downloaded 2 August 2026