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

Mr. John Marcus Mathews, RRW

Individual provider Addiction (Substance Use Disorder) Counselor · NPI 1457798894

Mr. John Marcus Mathews, RRW is an Addiction (Substance Use Disorder) Counselor in Sacramento, California. Licensed in California. Registered with an NPI since 2013.

Licensed in
CA
In the registry since
2013

Practice location Address checks out

2515 48th Ave
Sacramento, CA 95822-3810
Phone: (916) 394-2328
Fax: (916) 231-0117
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 · Licence RW5456 (CA)

Record details

NPI number1457798894
Entity typeIndividual (Type 1)
GenderMale
Credentials RRW
Sole proprietorNo
NPI enumeratedMay 24, 2013
Last updated in NPPESMay 24, 2013

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