Recently Updated NPI Information — some details in this NPI profile have been updated in the NPI registry within the last 60 days.

DR. STEVEN ARTHUR COLLIER PH.D.
NPI 1710260385
Psychologist - Clinical in Carlsbad, CA

Q: What is Steven Collier's NPI number?

The NPI number for Steven Collier is 1710260385. It was assigned to this individual provider in the NPPES registry on September 21, 2011.

Q: What is Steven Collier's specialty?

The primary specialty registered for this NPI is Psychologist, specializing in Clinical, with taxonomy code 103TC0700X.

Q: When was this NPI record last updated?

The NPPES record for Steven Collier was last updated on July 12, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 37 days 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.

Active since September 21, 2011

2945 HARDING ST, SUITE 110, CARLSBAD, CA 92008(760) 468-8508(760) 728-0758 Get Directions Write a Review

NPPES record last updated: July 12, 2026. Verified against the NPPES registry weekly; last sync: August 16, 2026.

On this page

About Dr. Steven Arthur Collier Ph.d. NPPES

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

DR. STEVEN ARTHUR COLLIER PH.D. (NPI 1710260385) is an individual clinical provider in Carlsbad, California, licensed in California (19078) and active in the NPI registry since September 2011.

NPPES Registry Identity

NPI1710260385

Entity TypeIndividualMale

Primary Taxonomy103TC0700X

Provider Legal NameDR. STEVEN ARTHUR COLLIERCredential: PH.D.

Location Address2945 HARDING ST, SUITE 110Carlsbad, CA 92008-1818

Mailing AddressPo Box 356Temecula, CA 92593-0356 · (760) 468-8508 · Fax (760) 728-0758

Phone(760) 468-8508

Fax(760) 728-0758

Sole ProprietorYes

Enumeration DateSeptember 21, 2011

Last NPPES UpdateJuly 12, 2026

✔ NPI 1710260385 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyPsychologist · ClinicalBehavioral Health & Social Service Providers

Taxonomy Code103TC0700X

License✔ Licensed in CA · 19078

Definition

A psychologist who provides continuing and comprehensive mental and behavioral health care for individuals and families; consultation to agencies and communities; training, education and supervision; and research-based practice. It is a specialty in breadth -- one that is broadly inclusive of severe psychopathology -- and marked by comprehensiveness and integration of knowledge and skill from a broad array of disciplines within and outside of psychology proper. The scope of clinical psychology encompasses all ages, multiple diversities and varied systems.

Also ListedPsychologistTaxonomy 103T00000X · License 19078 (CA)

2945 HARDING ST, Carlsbad, CA 92008

Open in Google Maps ↗

Other Providers at the Same Location NPPES 7

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

LOUIS HEIT MFT, LCSW

Social Worker (Clinical)

2945 HARDING ST, STE. 110
CARLSBAD, CA 92008

San Diego County (760) 613-9136

JUDITH T SHESTER L.C.S.W.

Social Worker (Clinical)

2945 HARDING ST, SUITE 105
CARLSBAD, CA 92008

San Diego County (760) 434-4227

EDWARD GEORGE SPENCER JR. PHD

Psychologist (Family)

2945 HARDING ST, STE 104
CARLSBAD, CA 92008

San Diego County (760) 736-9161

HOLISTIC PSYCHSOLUTIONS, INC

Community/Behavioral Health

2945 HARDING ST, SUITE 104
CARLSBAD, CA 92008

San Diego County (760) 284-3880

DR. CYNTHIA RODRIGUEZ CHAPMAN PSY.D.

Psychologist (Clinical)

2945 HARDING ST, SUITE 110
CARLSBAD, CA 92008

San Diego County (858) 336-7189

MR. MICHAEL JOSEPH DROUILHET LCSW

Social Worker (Clinical)

2945 HARDING ST, STE 112
CARLSBAD, CA 92008

San Diego County (760) 720-0662

FORREST MICAH OVERIN LMFT

Counselor (Mental Health)

2945 HARDING ST, #112
CARLSBAD, CA 92008

San Diego County (760) 434-1941

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 Steven Collier's NPI number?

The NPI number for Steven Collier is 1710260385. It was assigned to this individual provider in the NPPES registry on September 21, 2011.

Where is Steven Collier located?

Steven Collier practices at 2945 Harding St Suite 110, Carlsbad, CA 92008. The listed phone number is (760) 468-8508.

What is Steven Collier's specialty?

The primary specialty registered for this NPI is Psychologist, specializing in Clinical, with taxonomy code 103TC0700X.

When was this NPI record last updated?

The NPPES record for Steven Collier was last updated on July 12, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 37 days 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.