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

John Barker

Individual provider Addiction (Substance Use Disorder) Counselor · NPI 1043800857

John Barker is an Addiction (Substance Use Disorder) Counselor in Riverside, California. Registered with an NPI since 2021.

In the registry since
2021

Practice location Address checks out

5870 Arlington Ave
Riverside, CA 92504-2037
Phone: (951) 683-6596
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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 number1043800857
Entity typeIndividual (Type 1)
GenderMale
Sole proprietorNo
NPI enumeratedJanuary 25, 2021
Last updated in NPPESJanuary 25, 2021
Certification dateJanuary 25, 2021
Mailing address5870 Arlington Ave, Riverside, CA 92504-2037

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