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

MS. Tonia Marie Holsten, CASC052360518

Individual provider Addiction (Substance Use Disorder) Counselor · NPI 1417238379

MS. Tonia Marie Holsten, CASC052360518 is an Addiction (Substance Use Disorder) Counselor in Oakland, California. Licensed in California. Registered with an NPI since 2011.

Licensed in
CA
In the registry since
2011
Specialties on file
2

Practice location Address checks out

1124 International Blvd
Oakland, CA 94606-4331
Phone: (501) 533-0800
Fax: (510) 533-0300
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 C052360518 (CA)
Addiction (Substance Use Disorder) Counselor Taxonomy 101YA0400X · Licence H0908201631 (CA)

Record details

NPI number1417238379
Entity typeIndividual (Type 1)
GenderFemale
Credentials CASC052360518
Sole proprietorNo
NPI enumeratedSeptember 6, 2011
Last updated in NPPESJanuary 31, 2020
Certification dateJanuary 31, 2020

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