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

MS. Garry Williamson

Individual provider Addiction (Substance Use Disorder) Counselor · NPI 1194911818

MS. Garry Williamson is an Addiction (Substance Use Disorder) Counselor in Oakland, California. Registered with an NPI since 2007.

In the registry since
2007

Practice location Address checks out

1124 International Blvd
Oakland, CA 94606-4331
Phone: (510) 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

Record details

NPI number1194911818
Entity typeIndividual (Type 1)
GenderFemale
Sole proprietorNo
NPI enumeratedSeptember 16, 2007
Last updated in NPPESMay 14, 2021
Certification dateApril 20, 2021

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