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

Harriett Matthews

Individual provider Addiction (Substance Use Disorder) Counselor · NPI 1194947812

Harriett Matthews is an Addiction (Substance Use Disorder) Counselor in Brentwood, California. Practices as a sole proprietor. Registered with an NPI since 2007.

In the registry since
2007

Practice location Address checks out

9100 Brentwood Blvd
Brentwood, CA 94513-4000
Phone: (925) 809-7920
Fax: (925) 809-7928
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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 number1194947812
Entity typeIndividual (Type 1)
GenderFemale
Sole proprietorYes
NPI enumeratedMay 3, 2007
Last updated in NPPESFebruary 5, 2008
Mailing address9100 Brentwood Blvd, Brentwood, CA 94513-4000

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