1. Home
  2. Directory
  3. California
  4. Oakland
  5. Counselor
  6. NPI Profile

MS. GARRY WILLIAMSON
NPI 1194911818
Counselor - Addiction (Substance Use Disorder) in Oakland, CA

Active since September 16, 2007
1124 INTERNATIONAL BLVD, OAKLAND, CA 94606(510) 533-0800(510) 533-0300 Get Directions Write a Review

NPPES record last updated: May 14, 2021. Verified against the NPPES registry weekly; last sync: August 02, 2026.

Record update history: May 14, 2021, Apr 19, 2021 (2 updates tracked since 2021).

About Ms. Garry Williamson NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

MS. GARRY WILLIAMSON (NPI 1194911818) is an individual addiction (substance use disorder) provider in Oakland, California and active in the NPI registry since September 2007.

NPPES Registry Identity

NPI1194911818
Entity TypeIndividualFemale
Primary Taxonomy101YA0400X
Provider Legal NameMS. GARRY WILLIAMSON
Location Address1124 INTERNATIONAL BLVDOakland, CA 94606-4331
Mailing Address1124 International BlvdOakland, CA 94606-4331 · (510) 533-0800 · Fax (510) 533-0300
Phone(510) 533-0800
Fax(510) 533-0300
Sole ProprietorNo
Enumeration DateSeptember 16, 2007
Last NPPES UpdateMay 14, 20212 updates tracked since enumeration
NPPES CertifiedApril 20, 2021
✔ NPI 1194911818 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyCounselor · Addiction (Substance Use Disorder)Behavioral Health & Social Service Providers
Taxonomy Code101YA0400X
1124 INTERNATIONAL BLVD, Oakland, CA 94606
Open in Google Maps ↗

Other Providers at the Same Location NPPES 20

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

ROSA SALAZAR LVN
Licensed Vocational Nurse
1124 INTERNATIONAL BLVD
OAKLAND, CA 94606
Alameda County (510) 533-0800
HARRY MCCLEARY
Counselor (Addiction (Substance Use Disorder))
1124 INTERNATIONAL BLVD
OAKLAND, CA 94606
Alameda County (510) 533-0800
JUDITH ANN MARTIN MD
Family Medicine (Addiction Medicine)
1124 INTERNATIONAL BLVD
OAKLAND, CA 94606
Alameda County (510) 533-0800
MS. CHAI SAETURN
Counselor (Addiction (Substance Use Disorder))
1124 INTERNATIONAL BLVD
OAKLAND, CA 94606
Alameda County (510) 533-0800
AUBRY MINGMING
Licensed Vocational Nurse
1124 INTERNATIONAL BLVD
OAKLAND, CA 94606
Alameda County (510) 533-0800
BAART BEHAVIORAL HEALTH SERVICES, INC.
Clinic/Center (Rehabilitation, Substance Use Disorder)
1124 INTERNATIONAL BLVD
OAKLAND, CA 94606
Alameda County (510) 533-0800
DARREN PEECH
Licensed Vocational Nurse
1124 INTERNATIONAL BLVD
OAKLAND, CA 94606
Alameda County (510) 533-0800
ADDICTION RESEARCH AND TREATMENT, INC
Clinic/Center (Rehabilitation, Substance Use Disorder)
1124 INTERNATIONAL BLVD
OAKLAND, CA 94606
Alameda County (510) 533-0800

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Garry Williamson's NPI number?

The NPI number for Garry Williamson is 1194911818. It was assigned to this individual provider in the NPPES registry on September 16, 2007.

Where is Garry Williamson located?

Garry Williamson practices at 1124 International Blvd, Oakland, CA 94606. The listed phone number is (510) 533-0800.

What is Garry Williamson's specialty?

The primary specialty registered for this NPI is Counselor, specializing in Addiction (Substance Use Disorder), with taxonomy code 101YA0400X.

When was this NPI record last updated?

The NPPES record for Garry Williamson was last updated on May 14, 2021. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 5 years ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.