COLLEEN WILLIAMSON
NPI 1396101143
Counselor - Professional in San Diego, CA

Active since January 10, 2016
3594 4TH AVE, SAN DIEGO, CA 92103(619) 296-1151 Get Directions Write a Review

NPPES record last updated: October 3, 2023. Verified against the NPPES registry weekly; last sync: July 26, 2026.

About Colleen Williamson NPPES

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

COLLEEN WILLIAMSON (NPI 1396101143) is an individual professional provider in San Diego, California, licensed in California (LPCC5984) and active in the NPI registry since January 2016. She maintains a secondary practice location in El Cajon.

NPPES Registry Identity

NPI1396101143
Entity TypeIndividualFemale
Primary Taxonomy101YP2500X
Provider Legal NameCOLLEEN WILLIAMSON
Location Address3594 4TH AVESan Diego, CA 92103-4940
Mailing Address1400 N Johnson Ave, Suite 101El Cajon, CA 92020-1650 · (619) 442-0277 · Fax (619) 442-1101
Sole ProprietorYes
Enumeration DateJanuary 10, 2016
Last NPPES UpdateOctober 3, 2023
NPPES CertifiedOctober 3, 2023
NPI 1396101143 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

Primary SpecialtyCounselor · ProfessionalBehavioral Health & Social Service Providers
Taxonomy Code101YP2500X
License Licensed in CA · LPCC5984
3594 4TH AVE, San Diego, CA 92103

Secondary Practice Location 1

Location 11400 N Johnson Ave, Suite 101El Cajon, CA 92020-1650 · Phone (619) 442-0277 · Fax (619) 442-1101

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.

Marriage & Family Therapist
3594 4TH AVE
SAN DIEGO, CA 92103
Counselor (Addiction (Substance Use Disorder))
3594 4TH AVE
SAN DIEGO, CA 92103
Registered Nurse
3594 4TH AVE
SAN DIEGO, CA 92103
Peer Specialist
3594 4TH AVE
SAN DIEGO, CA 92103
Counselor (Addiction (Substance Use Disorder))
3594 4TH AVE
SAN DIEGO, CA 92103
Physician Assistant (Medical)
3594 4TH AVE
SAN DIEGO, CA 92103
Peer Specialist
3594 4TH AVE
SAN DIEGO, CA 92103
Counselor (Addiction (Substance Use Disorder))
3594 4TH AVE
SAN DIEGO, CA 92103

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 Colleen Williamson's NPI number?

The NPI number for Colleen Williamson is 1396101143. It was assigned to this individual provider in the NPPES registry on January 10, 2016.

Where is Colleen Williamson located?

Colleen Williamson practices at 3594 4th Ave, San Diego, CA 92103. The listed phone number is (619) 296-1151.

What is Colleen Williamson's specialty?

The primary specialty registered for this NPI is Counselor, specializing in Professional, with taxonomy code 101YP2500X.

When was this NPI record last updated?

The NPPES record for Colleen Williamson was last updated on October 3, 2023. NPI Profile syncs with the weekly NPPES data releases published by CMS.