Registry data as of Aug 27, 2026

Alexandria Castillo

Behavior Analyst · Ontario, CA

Alexandria Castillo is a behavior analyst with a practice address in Ontario, California, and NPI 1205610102, issued on Aug 22, 2023. Check the license with the California board that licenses this profession; the federal record below is the public data PlainDoctor holds for this provider.

Record from CMS NPPES, loaded Aug 27, 2026 · method · Verify with CMS →

NPPES recordas of Aug 27, 2026
1205610102
Name
Alexandria Castillo
Primary taxonomy
Behavior Analyst 103K00000X
Practice location
1500 S Haven Ave, Ontario, CA 91761
Phone
(909) 749-5204
Enumerated
Aug 22, 2023
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). A record is not a license: verify it with the state board.
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Also registered at 1500 S Haven Ave

A shared address usually means a shared clinic or building; it does not show who employs whom.

  1. Gabriella AcostaBehavior Technician1124710785
  2. Maria AhumadaBehavior Technician1437856036
  3. John AidooBehavior Technician1750132981
  4. Lenae AlamillaBehavior Technician1689398299
  5. Kaylee AnayaBehavior Technician1720762453
  6. Tamara AndersonBehavior Technician1619757051

Verify Alexandria Castillo in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersWhich California board licenses this professionCheck the board
  3. 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
  4. 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
  5. 5CertificationBoard certificationABMS, AOA, NCCPA, AANPNot checked
Find the California license search

PlainDoctor does not match the HHS-OIG exclusion list to individual records: most entries carry no NPI. Search the OIG exclusion list by name.

Statewide context: the Medical Board of California reported 374 disciplinary actions in FY 2022-23. California discipline data →

341 behavior analyst records list a Ontario practice address

They are 341 of the 5,375 NPPES records with a Ontario practice address, and 19,950 behavior analyst records in California. No Medicare prescribing, quality score, industry payment or hospital affiliation is published for this NPI.

All 341 in Ontario → All 19,950 in California → Every provider in Ontario →

Other behavior analyst records in California

  1. Eduardo A HernandezTorrance, CA1811564081
  2. Ali AaronNapa, CA1689112575
  3. Elise AasenSan Francisco, CA1952829210
  4. Melanie Ann AbadSan Mateo, CA1366808545
  5. Marine Abadzhyan, ANorth Hollywood, CA1437533494
  6. Ashley Aurora AbalosRancho Cucamonga, CA1225974124
  7. Valerie Abaniel, M.A BCBAFullerton, CA1336377340
  8. Althea Abaqueta, BCBAFountain Valley, CA1619272853
  9. Stephanie AbarcaCorona, CA1124987656
  10. Vanessa AbarcaSan Jose, CA1558900910

Common questions

What is Alexandria Castillo's NPI number?

Alexandria Castillo's National Provider Identifier (NPI) is 1205610102, issued on Aug 22, 2023. An NPI identifies a provider in billing; it is not a license.

Where is Alexandria Castillo located?

The NPPES record lists a practice address at 1500 S Haven Ave, Ontario, CA, 91761. Phone: (909) 749-5204. Providers update this record themselves, so call before visiting.

How can I verify Alexandria Castillo's license?

Search the California board that licenses this profession; the NPPES record confirms identity only.

Source: CMS National Plan and Provider Enumeration System (NPPES), loaded Aug 27, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. An NPI identifies who bills; it is not a license.

Compiled from official public sources by the editorial process.

Every figure on PlainDoctor is rendered directly from the federal CMS NPPES registry, Medicare Part D, MIPS, and Open Payments records, no number is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 27, 2026.