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

Colleen Williamson

Individual provider Addiction (Substance Use Disorder) Counselor · NPI 1396101143

Colleen Williamson is an Addiction (Substance Use Disorder) Counselor in San Diego, California. Practices as a sole proprietor and works from 2 locations. Licensed in California.

Licensed in
CA
In the registry since
2016
Specialties on file
2
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Practice location Address checks out

3594 4th Ave
San Diego, CA 92103-4940
Phone: (619) 296-1151
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Additional practice locations (1)

  • 1400 N Johnson Ave, El Cajon, CA 92020-1650 — (619) 442-0277

Specialties & licences

Professional Counselor (primary) Taxonomy 101YP2500X · Licence LPCC5984 (CA)
Addiction (Substance Use Disorder) Counselor Taxonomy 101YA0400X

Record details

NPI number1396101143
Entity typeIndividual (Type 1)
GenderFemale
Sole proprietorYes
NPI enumeratedJanuary 10, 2016
Last updated in NPPESOctober 3, 2023
Certification dateOctober 3, 2023

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