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

KATHRINE LAUREN CASILLAS MD
NPI 1639707524
Psychiatry & Neurology - Psychiatry in Los Altos, CA

Q: What is Kathrine Casillas's NPI number?

The NPI number for Kathrine Casillas is 1639707524. It was assigned to this individual provider in the NPPES registry on March 28, 2020.

Q: What is Kathrine Casillas's specialty?

The primary specialty registered for this NPI is Psychiatry & Neurology, specializing in Psychiatry, with taxonomy code 2084P0800X.

Q: When was this NPI record last updated?

The NPPES record for Kathrine Casillas was last updated on July 29, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 27 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 March 28, 2020

330 2ND ST STE 4, LOS ALTOS, CA 94022(650) 924-2787 Get Directions Write a Review

NPPES record last updated: July 29, 2026. Verified against the NPPES registry weekly; last sync: August 23, 2026.

Record update history: Jul 29, 2026, Aug 1, 2024, Jul 18, 2023 and 1 more (4 updates tracked since 2020).

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About Kathrine Lauren Casillas Md NPPES

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

KATHRINE LAUREN CASILLAS MD (NPI 1639707524) is an individual psychiatry provider in Los Altos, California, licensed in California (A182967) and active in the NPI registry since March 2020.

NPPES Registry Identity

NPI1639707524

Entity TypeIndividualFemale

Primary Taxonomy2084P0800X

Provider Legal NameKATHRINE LAUREN CASILLASCredential: MD

Location Address330 2ND ST STE 4Los Altos, CA 94022-3649

Mailing Address330 2nd St Ste 4Los Altos, CA 94022-3649

Phone(650) 924-2787

Sole ProprietorNo

Enumeration DateMarch 28, 2020

Last NPPES UpdateJuly 29, 20264 updates tracked since enumeration

NPPES CertifiedJuly 29, 2026

✔ NPI 1639707524 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyPsychiatry & Neurology · PsychiatryAllopathic & Osteopathic Physicians

Taxonomy Code2084P0800X

License✔ Licensed in CA · A182967

Definition

A Psychiatrist specializes in the prevention, diagnosis, and treatment of mental disorders, emotional disorders, psychotic disorders, mood disorders, anxiety disorders, substance-related disorders, sexual and gender identity disorders and adjustment disorders. Biologic, psychological, and social components of illnesses are explored and understood in treatment of the whole person. Tools used may include diagnostic laboratory tests, prescribed medications, evaluation and treatment of psychological and interpersonal problems with individuals and families, and intervention for coping with stress, crises, and other problems.

330 2ND ST STE 4, Los Altos, CA 94022

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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 Kathrine Casillas's NPI number?

The NPI number for Kathrine Casillas is 1639707524. It was assigned to this individual provider in the NPPES registry on March 28, 2020.

Where is Kathrine Casillas located?

Kathrine Casillas practices at 330 2nd St Ste 4, Los Altos, CA 94022. The listed phone number is (650) 924-2787.

What is Kathrine Casillas's specialty?

The primary specialty registered for this NPI is Psychiatry & Neurology, specializing in Psychiatry, with taxonomy code 2084P0800X.

When was this NPI record last updated?

The NPPES record for Kathrine Casillas was last updated on July 29, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 27 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.