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

FREDERICK MCCULLOUGH SIGLAR
NPI 1346170586
Psychologist in Santa Fe Springs, CA

Active since May 20, 2026
11731 TELEGRAPH RD STE A, SANTA FE SPRINGS, CA 90670(626) 441-4221 Get Directions Write a Review

NPPES record last updated: September 10, 2026. Verified against the NPPES registry weekly; last sync: September 27, 2026.

Record update history: Sep 10, 2026, May 20, 2026 (2 updates tracked since 2026).

About Frederick Mccullough Siglar NPPES

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

FREDERICK MCCULLOUGH SIGLAR (NPI 1346170586) is an individual psychologist in Santa Fe Springs, California and active in the NPI registry since May 2026.

NPPES Registry Identity

NPI1346170586
Entity TypeIndividualMale
Primary Taxonomy103T00000X
Provider Legal NameFREDERICK MCCULLOUGH SIGLAR
Location Address11731 TELEGRAPH RD STE ASanta Fe Springs, CA 90670-6825
Mailing Address704 E Park St Apt A4Carbondale, IL 62901-3842 · (650) 644-5190
Sole ProprietorNo
Enumeration DateMay 20, 2026
Last NPPES UpdateSeptember 10, 20262 updates tracked since enumeration
NPPES CertifiedSeptember 10, 2026
✔ NPI 1346170586 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyPsychologistBehavioral Health & Social Service Providers
Taxonomy Code103T00000X
Definition
A psychologist is an individual who is licensed to practice psychology which is defined as the observation, description, evaluation, interpretation, and modification of human behavior by the application of psychological principles, methods, and procedures, for the purpose of preventing or eliminating symptomatic, maladaptive, or undesired behavior and of enhancing interpersonal relationships, work and life adjustment, personal effectiveness, behavioral health, and mental health. The practice of psychology includes, but is not limited to, psychological testing and the evaluation or assessment of personal characteristics, such as intelligence, personality, abilities, interests, aptitudes, and neuropsychological functioning; counseling, psychoanalysis, psychotherapy, hypnosis, biofeedback, and behavior analysis and therapy; diagnosis and treatment of mental and emotional disorder or disability, alcoholism and substance abuse, disorders of habit or conduct, as well as of the psychological aspects of physical illness, accident, injury, or disability; and psycheducational evaluation, therapy, remediation, and consultation. Psychological services may be rendered to individuals, families, groups and the public.
11731 TELEGRAPH RD STE A, Santa Fe Springs, CA 90670

Other Providers at the Same Location NPPES

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

Psychologist
11731 TELEGRAPH RD STE A
SANTA FE SPRINGS, CA 90670

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 Frederick Siglar's NPI number?

The NPI number for Frederick Siglar is 1346170586. It was assigned to this individual provider in the NPPES registry on May 20, 2026.

Where is Frederick Siglar located?

Frederick Siglar practices at 11731 Telegraph Rd Ste A, Santa Fe Springs, CA 90670. The listed phone number is (626) 441-4221.

What is Frederick Siglar's specialty?

The primary specialty registered for this NPI is Psychologist with taxonomy code 103T00000X.

When was this NPI record last updated?

The NPPES record for Frederick Siglar was last updated on September 10, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 21 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.