Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.

William Anthony Castellon

Individual provider Behavior Technician · NPI 1700546058

William Anthony Castellon is a Behavior Technician in El Monte, California. Licensed in California. Registered with an NPI since 2021.

Licensed in
CA
In the registry since
2021

Practice location Address checks out

4823 Durfee Ave
El Monte, CA 91732-1727
Phone: (626) 643-1040
Show map & directions

Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Behavior Technician (primary) Taxonomy 106S00000X · Licence 106S00000X (CA)

Record details

NPI number1700546058
Entity typeIndividual (Type 1)
GenderMale
Sole proprietorNo
NPI enumeratedDecember 28, 2021
Last updated in NPPESDecember 28, 2021
Certification dateDecember 28, 2021

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