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

William Echiro Riley

Individual provider Addiction (Substance Use Disorder) Counselor · NPI 1720796691

William Echiro Riley is an Addiction (Substance Use Disorder) Counselor in El Cajon, California. Practices as a sole proprietor. Registered with an NPI since 2022.

In the registry since
2022

Practice location Address checks out

1400 N Johnson Ave Ste 101
El Cajon, CA 92020-1651
Phone: (619) 807-4165
Show map & directions

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

Specialties & licences

Addiction (Substance Use Disorder) Counselor (primary) Taxonomy 101YA0400X

Record details

NPI number1720796691
Entity typeIndividual (Type 1)
GenderMale
Sole proprietorYes
NPI enumeratedNovember 9, 2022
Last updated in NPPESNovember 9, 2022
Certification dateNovember 9, 2022

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