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MARGARET MARY SLAVEN PSY.D.
NPI 1477628923
Psychologist - Clinical in Fullerton, CA

Active since November 21, 2006
1400 N HARBOR BLVD, SUITE 440, FULLERTON, CA 92835(714) 681-9070(714) 773-4788 Get Directions Write a Review

NPPES record last updated: September 11, 2025. Verified against the NPPES registry weekly; last sync: August 02, 2026.

About Margaret Mary Slaven Psy.d. NPPES

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

MARGARET MARY SLAVEN PSY.D. (NPI 1477628923) is an individual clinical provider in Fullerton, California, licensed in California (PSY19346) and active in the NPI registry since November 2006.

NPPES Registry Identity

NPI1477628923
Entity TypeIndividualFemale
Primary Taxonomy103TC0700X
Provider Legal NameMARGARET MARY SLAVENCredential: PSY.D.
Location Address1400 N HARBOR BLVD, SUITE 440Fullerton, CA 92835-4126
Mailing Address1400 N Harbor Blvd, Suite 440Fullerton, CA 92835-4126 · (714) 681-9070 · Fax (714) 773-4788
Phone(714) 681-9070
Fax(714) 773-4788
Sole ProprietorNo
Enumeration DateNovember 21, 2006
Last NPPES UpdateSeptember 11, 2025
✔ NPI 1477628923 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 3

★ Primary SpecialtyPsychologist · ClinicalBehavioral Health & Social Service Providers
Taxonomy Code103TC0700X
License✔ Licensed in CA · PSY19346
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 ListedClinical NeuropsychologistTaxonomy 103G00000X · License PSY19346 (CA)
Also ListedPsychologist · RehabilitationTaxonomy 103TR0400X · License PSY19346 (CA)
1400 N HARBOR BLVD, Fullerton, CA 92835
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Other Providers at the Same Location NPPES 11

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

DR. UMA P RAO MD
Internal Medicine
1400 N HARBOR BLVD, SUITE 120
FULLERTON, CA 92835
Orange County (714) 992-2765
UMA P RAO, MD., INC
Internal Medicine
1400 N HARBOR BLVD, SUITE 120
FULLERTON, CA 92835
Orange County (714) 992-2765
THE NEUROBEHAVIORAL GROUP, A PSYCHOLOGICAL CORPORATION
Clinical Neuropsychologist
1400 N HARBOR BLVD, SUITE 440
FULLERTON, CA 92835
Orange County (714) 681-9070
HEARTVIEW DIAGNOSTIC CORP
Technician, Other
1400 N HARBOR BLVD, STE. # 104
FULLERTON, CA 92835
Orange County (562) 244-0065
PRISCILLA POLTI ARMSTRONG PSYD
Clinical Neuropsychologist
1400 N HARBOR BLVD, SUITE 440
FULLERTON, CA 92835
Orange County (714) 681-9070
JOAN M DANTO LCSW
Social Worker (Clinical)
1400 N HARBOR BLVD, SUITE 440
FULLERTON, CA 92835
Orange County (714) 992-5111
JON R. SHERMAN MD., INC
Specialist
1400 N HARBOR BLVD, SUITE 100
FULLERTON, CA 92835
Orange County (714) 578-0533
ENRIQUE FRIEDMAN, M.D., INC.
Psychiatry & Neurology (Psychiatry)
1400 N HARBOR BLVD, SUITE 106
FULLERTON, CA 92835
Orange County (714) 879-2732

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 Margaret Slaven's NPI number?

The NPI number for Margaret Slaven is 1477628923. It was assigned to this individual provider in the NPPES registry on November 21, 2006.

Where is Margaret Slaven located?

Margaret Slaven practices at 1400 N Harbor Blvd Suite 440, Fullerton, CA 92835. The listed phone number is (714) 681-9070.

What is Margaret Slaven'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 Margaret Slaven was last updated on September 11, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 10 months 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.