DR. JOEL O'BESO PSY.D.
NPI 1154566438
Psychologist - Clinical in San Mateo, CA

Q: What is Joel O'beso's NPI number?

The NPI number for Joel O'beso is 1154566438. It was assigned to this individual provider in the NPPES registry on December 15, 2008. The provider is also known as Dr. Joel Obeso-Maldonado Psy.D..

Q: What is Joel O'beso'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 Joel O'beso was last updated on January 31, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 6 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.

Active since December 15, 2008

1900 OFARRELL ST STE 100, SAN MATEO, CA 94403(650) 780-0575(650) 780-0587 Get Directions Write a Review

NPPES record last updated: January 31, 2026. Verified against the NPPES registry weekly; last sync: August 09, 2026.

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About Dr. Joel O'beso Psy.d. NPPES

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

DR. JOEL O'BESO PSY.D. (NPI 1154566438) is an individual clinical provider in San Mateo, California, licensed in California (PSY34448) and active in the NPI registry since December 2008.

NPPES Registry Identity

NPI1154566438

Entity TypeIndividualMale

Primary Taxonomy103TC0700X

Provider Legal NameDR. JOEL O'BESOCredential: PSY.D.

Location Address1900 OFARRELL ST STE 100San Mateo, CA 94403-1387

Mailing Address1900 Ofarrell St Ste 100San Mateo, CA 94403-1387 · (650) 780-0575 · Fax (650) 780-0587

Phone(650) 780-0575

Fax(650) 780-0587

Sole ProprietorNo

Enumeration DateDecember 15, 2008

Last NPPES UpdateJanuary 31, 2026

NPPES CertifiedJanuary 31, 2026

✔ NPI 1154566438 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyPsychologist · ClinicalBehavioral Health & Social Service Providers

Taxonomy Code103TC0700X

License✔ Licensed in CA · PSY34448

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.

1900 OFARRELL ST STE 100, San Mateo, CA 94403

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Other Names 1

Former Name (1)Dr. Joel Obeso-maldonado Psy.d.

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 Joel O'beso's NPI number?

The NPI number for Joel O'beso is 1154566438. It was assigned to this individual provider in the NPPES registry on December 15, 2008. The provider is also known as Dr. Joel Obeso-Maldonado Psy.D..

Where is Joel O'beso located?

Joel O'beso practices at 1900 Ofarrell St Ste 100, San Mateo, CA 94403. The listed phone number is (650) 780-0575.

What is Joel O'beso'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 Joel O'beso was last updated on January 31, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 6 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.