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JAMES DONALD WILLIAMSON
NPI 1174934012
Counselor - Addiction (Substance Use Disorder) in South San Francisco, CA

Active since May 14, 2014
301 GRAND AVE STE 301, SOUTH SAN FRANCISCO, CA 94080(650) 244-1447(650) 244-1447 Get Directions Write a Review

NPPES record last updated: May 14, 2014. Verified against the NPPES registry weekly; last sync: August 09, 2026.

About James Donald Williamson NPPES

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

JAMES DONALD WILLIAMSON (NPI 1174934012) is an individual addiction (substance use disorder) provider in South San Francisco, California and active in the NPI registry since May 2014.

NPPES Registry Identity

NPI1174934012
Entity TypeIndividualMale
Primary Taxonomy101YA0400X
Provider Legal NameJAMES DONALD WILLIAMSON
Location Address301 GRAND AVE STE 301South San Francisco, CA 94080-3641
Mailing Address301 Grand Ave Ste 301South San Francisco, CA 94080-3641 · (650) 244-1447 · Fax (650) 244-1447
Phone(650) 244-1447
Fax(650) 244-1447
Sole ProprietorYes
Enumeration DateMay 14, 2014
✔ NPI 1174934012 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
301 GRAND AVE STE 301, South San Francisco, CA 94080
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Other Identifiers 3

Other97037CA · Casa Ollin
OtherAD418603CA · Entrefamilia
OtherAD414903Entre Familia Iop

Other Providers at the Same Location NPPES 10

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

DAUNE LURANN TURNER
Counselor (Addiction (Substance Use Disorder))
301 GRAND AVE STE 301
SOUTH SAN FRANCISCO, CA 94080
San Mateo County (650) 295-9286
VAELUPE DAISY ENA
Counselor (Addiction (Substance Use Disorder))
301 GRAND AVE STE 301
SOUTH SAN FRANCISCO, CA 94080
San Mateo County (650) 244-1444
GENEVIEVE QUINTERO
Counselor (Addiction (Substance Use Disorder))
301 GRAND AVE STE 301
SOUTH SAN FRANCISCO, CA 94080
San Mateo County (650) 244-1444
BERNADETTE MORALES
Counselor (Addiction (Substance Use Disorder))
301 GRAND AVE STE 301
SOUTH SAN FRANCISCO, CA 94080
San Mateo County (650) 244-1441
MR. LUIS VENEGAS
Counselor (Addiction (Substance Use Disorder))
301 GRAND AVE STE 301
SOUTH SAN FRANCISCO, CA 94080
San Mateo County (650) 244-1444
DANILO PEDROSO
Counselor (Addiction (Substance Use Disorder))
301 GRAND AVE STE 301
SOUTH SAN FRANCISCO, CA 94080
San Mateo County (650) 244-1444
GERMAINE BELTRAN
Counselor (Addiction (Substance Use Disorder))
301 GRAND AVE STE 301
SOUTH SAN FRANCISCO, CA 94080
San Mateo County (650) 244-1444
RICARDO MONTANEZ
Counselor (Addiction (Substance Use Disorder))
301 GRAND AVE STE 301
SOUTH SAN FRANCISCO, CA 94080
San Mateo County (650) 244-1444

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 James Williamson's NPI number?

The NPI number for James Williamson is 1174934012. It was assigned to this individual provider in the NPPES registry on May 14, 2014.

Where is James Williamson located?

James Williamson practices at 301 Grand Ave Ste 301, South San Francisco, CA 94080. The listed phone number is (650) 244-1447.

What is James 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 James Williamson was last updated on May 14, 2014. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 12 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.