JOAN M. YBARRA, PSYD., A PSYCHOLOGICAL CORPORATION
NPI 1164520656
Psychologist - Clinical in Covina, CA

Q: What is Joan M. Ybarra, Psyd., A Psychological Corporation's specialty?

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

Active since September 20, 2006

599 S BARRANCA AVE, SUITE 221, COVINA, CA 91723(909) 573-7660(626) 912-6235 Get Directions Write a Review

NPPES record last updated: January 26, 2020. Verified against the NPPES registry weekly; last sync: October 18, 2026.

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About Joan M. Ybarra, Psyd., A Psychological Corporation NPPES

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

JOAN M. YBARRA, PSYD., A PSYCHOLOGICAL CORPORATION (NPI 1164520656) is a healthcare organization registered as a clinical in Covina, California and active in the NPI registry since September 2006. The organization lists Joan M Ybarra, President, as its authorized official.

NPPES Registry Identity

NPI1164520656

Entity TypeOrganization

Primary Taxonomy103TC0700X

Legal Business NameJOAN M. YBARRA, PSYD., A PSYCHOLOGICAL CORPORATION

Location Address599 S BARRANCA AVE, SUITE 221Covina, CA 91723-2777

Mailing Address599 S Barranca Ave, Suite 221Covina, CA 91723-2777 · (909) 573-7660 · Fax (626) 912-6235

Phone(909) 573-7660

Fax(626) 912-6235

Organization SubpartNo

Authorized OfficialJoan M YbarraPresident · (909) 573-7660

Enumeration DateSeptember 20, 2006

Last NPPES UpdateJanuary 26, 2020

✔ NPI 1164520656 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 · PSY 16627

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.

599 S BARRANCA AVE, Covina, CA 91723

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Group Practice 1

Group TaxonomyThis provdier is a business group of one or more individual practitioners, all of who practice with the same area of specialization.193400000X SINGLE SPECIALTY GROUP

Medicare Participation & PECOS CMS

Medicare enrollment and the clinicians who bill Medicare through this organization, from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Joan M. Ybarra, Psyd., A Psychological Corporation is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

Clinicians Billing Medicare Through This Organization

Medicare enrollment records show 1 clinician reassigns Medicare billing to Joan M. Ybarra, Psyd., A Psychological Corporation, which bills Medicare for the services this clinician delivers.

Clinician (1)

Joan Ybarra, PSYD

Clinical Psychologist

NPI 1851730915

599 S BARRANCA AVE SUITE 221
Covina, CA 91723

(909) 573-7660

✔ PECOS✔ Accepts MedicareSame address

Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

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 Joan M. Ybarra, Psyd., A Psychological Corporation's NPI number?

The NPI number for Joan M. Ybarra, Psyd., A Psychological Corporation is 1164520656. It was assigned to this organization in the NPPES registry on September 20, 2006.

Where is Joan M. Ybarra, Psyd., A Psychological Corporation located?

Joan M. Ybarra, Psyd., A Psychological Corporation is located at 599 S Barranca Ave Suite 221, Covina, CA 91723. The listed phone number is (909) 573-7660.

What is Joan M. Ybarra, Psyd., A Psychological Corporation's specialty?

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

Is Joan M. Ybarra, Psyd., A Psychological Corporation enrolled in Medicare?

Yes. Joan M. Ybarra, Psyd., A Psychological Corporation is registered in the Medicare PECOS enrollment system.

How many clinicians bill Medicare through Joan M. Ybarra, Psyd., A Psychological Corporation?

According to the CMS Revalidation Reassignment List (October 2026 release), 1 clinician (Clinical Psychologist) reassigns their Medicare billing to Joan M. Ybarra, Psyd., A Psychological Corporation. A reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for the clinician's services. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

When was this NPI record last updated?

The NPPES record for Joan M. Ybarra, Psyd., A Psychological Corporation was last updated on January 26, 2020. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 6 years 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.