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

William Ely Fonseca

Individual provider Behavior Technician · NPI 1639043169

William Ely Fonseca is a Behavior Technician in Antioch, California. Licensed in California. Registered with an NPI since 2025.

Licensed in
CA
In the registry since
2025

Practice location Address checks out

1887 Mount Goethe Way
Antioch, CA 94531-9077
Phone: (925) 690-7911
Show map & directions

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

Specialties & licences

Behavior Technician (primary) Taxonomy 106S00000X (CA)

Record details

NPI number1639043169
Entity typeIndividual (Type 1)
GenderMale
Sole proprietorNo
NPI enumeratedSeptember 29, 2025
Last updated in NPPESSeptember 29, 2025
Certification dateSeptember 29, 2025
Mailing address1887 Mount Goethe Way, Antioch, CA 94531-9077

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