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NICOLLE NAPIER-IONASCU PSYD, A PSYCHOLOGICAL CORPORATION
NPI 1790321347
Clinical Neuropsychologist in Pleasant Hill, CA

Active since November 19, 2019
400 TAYLOR BLVD STE 300C, PLEASANT HILL, CA 94523(925) 588-8895 Get Directions Write a Review

NPPES record last updated: November 19, 2019. Verified against the NPPES registry weekly; last sync: November 08, 2026.

About Nicolle Napier-ionascu Psyd, A Psychological Corporation NPPES

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

NICOLLE NAPIER-IONASCU PSYD, A PSYCHOLOGICAL CORPORATION (NPI 1790321347), doing business as Diablo Valley Neuropsychology, is a healthcare organization registered as a clinical neuropsychologist in Pleasant Hill, California and active in the NPI registry since November 2019. The organization lists Nicolle R Napier-ionascu, President, as its authorized official.

NPPES Registry Identity

NPI1790321347
Entity TypeOrganization
Primary Taxonomy103G00000X
Legal Business NameNICOLLE NAPIER-IONASCU PSYD, A PSYCHOLOGICAL CORPORATION
Location Address400 TAYLOR BLVD STE 300CPleasant Hill, CA 94523-2160
Mailing Address400 Taylor Blvd Ste 300cPleasant Hill, CA 94523-2160
Phone(925) 588-8895
Organization SubpartNo
Authorized OfficialNicolle R Napier-ionascuPresident · (925) 588-8895
Enumeration DateNovember 19, 2019
✔ NPI 1790321347 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyClinical NeuropsychologistBehavioral Health & Social Service Providers
Taxonomy Code103G00000X
Definition
A clinical psychologist who applies principles of assessment and intervention based upon the scientific study of human behavior as it relates to normal and abnormal functioning of the central nervous system. The specialty is dedicated to enhancing the understanding of brain-behavior relationships and the application of such knowledge to human problems.
Also ListedPsychologist · ClinicalTaxonomy 103TC0700X
400 TAYLOR BLVD STE 300C, Pleasant Hill, CA 94523
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Other Names 1

Doing Business AsDiablo Valley Neuropsychology

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 MULTIPLE 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)

Nicolle Napier-ionascu Psyd, A Psychological Corporation is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

Clinicians Billing Medicare Through This Organization

3

Medicare enrollment records show 3 clinicians reassign Medicare billing to Nicolle Napier-Ionascu Psyd, A Psychological Corporation, which bills Medicare for the services they deliver. They are listed nearest first.

Clinicians, nearest first (3)

Lyndsay Dell, PSYD
Clinical Psychologist
NPI 1194354001
4420 PENNIMAN AVE APT C
Oakland, CA 94619
(760) 521-3015
✔ PECOS✔ Accepts Medicare14 mi
Crystal Faith Cajilog
Clinical Psychologist
NPI 1255680245
225 37TH AVE 3RD FLOOR
San Mateo, CA 94403
(650) 537-5262
✔ PECOS32 mi
Nicolle Napier Ionascu, PSY.D.
Clinical Psychologist
NPI 1710001490
125 BALDWIN AVE STE 100
Charlotte, NC 28204
(704) 316-1911
✔ PECOS✔ Accepts Medicare2,283 mi

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 Nicolle Napier-Ionascu Psyd, A Psychological Corporation's NPI number?

The NPI number for Nicolle Napier-Ionascu Psyd, A Psychological Corporation is 1790321347. It was assigned to this organization in the NPPES registry on November 19, 2019. The provider is doing business as Diablo Valley Neuropsychology.

Where is Nicolle Napier-Ionascu Psyd, A Psychological Corporation located?

Nicolle Napier-Ionascu Psyd, A Psychological Corporation is located at 400 Taylor Blvd Ste 300C, Pleasant Hill, CA 94523. The listed phone number is (925) 588-8895.

What is Nicolle Napier-Ionascu Psyd, A Psychological Corporation's specialty?

The primary specialty registered for this NPI is Clinical Neuropsychologist with taxonomy code 103G00000X.

Is Nicolle Napier-Ionascu Psyd, A Psychological Corporation enrolled in Medicare?

Yes. Nicolle Napier-Ionascu Psyd, A Psychological Corporation is registered in the Medicare PECOS enrollment system.

How many clinicians bill Medicare through Nicolle Napier-Ionascu Psyd, A Psychological Corporation?

According to the CMS Revalidation Reassignment List (October 2026 release), 3 clinicians, all in Clinical Psychologist, reassign their Medicare billing to Nicolle Napier-Ionascu 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 Nicolle Napier-Ionascu Psyd, A Psychological Corporation was last updated on November 19, 2019. 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.