Registry data as of Aug 27, 2026

Josephina Castillo

Behavior Technician · Hayward, CA

Josephina Castillo is a behavior technician with a practice address in Hayward, California, and NPI 1871094607, issued on Feb 27, 2018. 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
1871094607
Name
Josephina Castillo
Primary taxonomy
Behavior Technician 106S00000X
Practice location
1558 B St, Hayward, CA 94541
Phone
(510) 750-1650
Enumerated
Feb 27, 2018
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 1558 B St

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

  1. Michell AlcalaBehavior Technician1235887217
  2. Nina BuiBehavior Technician1942701859
  3. Denne DicksonBehavior Technician1184125080
  4. Kevin Kachadourian, M.A, BCBABehavior Analyst1699276428
  5. Adriana LopezBehavior Technician1275028318
  6. Farha MalikBehavior Technician1962903799

Verify Josephina 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 →

1,494 behavior technician records list a Hayward practice address

They are 1,494 of the 3,993 NPPES records with a Hayward practice address, and 174,024 behavior technician records in California. No Medicare prescribing, quality score, industry payment or hospital affiliation is published for this NPI.

All 1,494 in Hayward → All 174,024 in California → Every provider in Hayward →

Other behavior technician records in California

  1. James A DetarFremont, CA1699551622
  2. Jordyn A JacksonMoreno Valley, CA1336837749
  3. Jessica A RodriguezIrvine, CA1033701982
  4. Yuki A'BeckettMonrovia, CA1548138944
  5. Paris A'SaniMonrovia, CA1336930510
  6. Rana AabedMonrovia, CA1245960640
  7. Lucila AabyMonrovia, CA1912691692
  8. Madeleine AahlSan Leandro, CA1386288140
  9. Erica AaltoTorrance, CA1598519159
  10. Kylie AardemaOrange, CA1124864210

Common questions

What is Josephina Castillo's NPI number?

Josephina Castillo's National Provider Identifier (NPI) is 1871094607, issued on Feb 27, 2018. An NPI identifies a provider in billing; it is not a license.

Where is Josephina Castillo located?

The NPPES record lists a practice address at 1558 B St, Hayward, CA, 94541. Phone: (510) 750-1650. Providers update this record themselves, so call before visiting.

How can I verify Josephina 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.