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

Nicholas O Barrington, LCSW

Individual provider Clinical Social Worker · NPI 1639832702

Nicholas O Barrington, LCSW is a Clinical Social Worker in Los Alamitos, California. Qualified in 2021, 5 years ago. Practices as a sole proprietor and accepts Medicare assignment. Licensed in California.

Years since qualifying
5
Licensed in
CA
In the registry since
2021
Specialties on file
2
What do these letters mean?
LCSW — Licensed Clinical Social Worker
A social worker licensed to diagnose and treat mental health conditions independently.

See every abbreviation used in this directory →

Practice location Address checks out

11232 Los Alamitos Blvd Ste 103B
Los Alamitos, CA 90720-3900
Phone: (562) 294-6257
Fax: (562) 284-5142
Show map & directions

Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Clinical Social Worker (primary) Taxonomy 1041C0700X · Licence 123200 (CA)
Rehabilitation Practitioner Taxonomy 225400000X

Record details

NPI number1639832702
Entity typeIndividual (Type 1)
GenderMale
Credentials LCSW
Sole proprietorYes
NPI enumeratedOctober 15, 2021
Last updated in NPPESApril 10, 2026
Certification dateApril 10, 2026

Medicare enrollment

From the CMS Doctors & Clinicians file — this clinician is enrolled in Medicare.

Medicare specialtyCLINICAL SOCIAL WORKER
Medical schoolOTHER
Graduated 2021 (5 years in practice)
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
Practice locations2 on file with Medicare

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