DR. J. PRESTON HARLEY PHD
NPI 1578598462
Clinical Neuropsychologist in Naperville, IL

Q: What is J. Preston Harley's NPI number?

The NPI number for J. Preston Harley is 1578598462. It was assigned to this individual provider in the NPPES registry on July 11, 2006.

Q: What is J. Preston Harley's specialty?

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

Q: When was this NPI record last updated?

The NPPES record for J. Preston Harley was last updated on September 11, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 13 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 July 11, 2006PECOS Enrolled

3155 BOOK RD, SUITE 103, NAPERVILLE, IL 60564(630) 293-4321(630) 293-4297 Get Directions Write a Review

NPPES record last updated: September 11, 2025. Verified against the NPPES registry weekly; last sync: October 18, 2026.

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About Dr. J. Preston Harley Phd NPPES

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

DR. J. PRESTON HARLEY PHD (NPI 1578598462) is an individual clinical neuropsychologist in Naperville, Illinois, licensed in Illinois (071-004240) and active in the NPI registry since July 2006. He is enrolled in Medicare PECOS.

NPPES Registry Identity

NPI1578598462

Entity TypeIndividualMale

Primary Taxonomy103G00000X

Provider Legal NameDR. J. PRESTON HARLEYCredential: PHD

Location Address3155 BOOK RD, SUITE 103Naperville, IL 60564-9545

Mailing AddressPo Box 492Wheaton, IL 60189-0492 · (630) 293-4321 · Fax (630) 293-4297

Phone(630) 293-4321

Fax(630) 293-4297

Sole ProprietorYes

Enumeration DateJuly 11, 2006

Last NPPES UpdateSeptember 11, 2025

✔ NPI 1578598462 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 3

★ Primary SpecialtyClinical NeuropsychologistBehavioral Health & Social Service Providers

Taxonomy Code103G00000X

License✔ Licensed in IL · 071-004240

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 · License 071-004240 (IL)

Also ListedPsychologist · RehabilitationTaxonomy 103TR0400X · License 071-004240 (IL)

3155 BOOK RD, Naperville, IL 60564

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Medicare Participation & PECOS CMS

Medicare enrollment, assignment, and ordering and referring status from the CMS PECOS system.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Dr. J. Preston Harley Phd is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment– Home Health Agency– Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Other Providers at the Same Location NPPES 3

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

PAUL V. CAPUTO SR., D.D.S., P.C.

Dentist

3155 BOOK RD, STE. 107
NAPERVILLE, IL 60564

Will County (630) 922-1311

DR. MATTHEW JAMES DRESCHER D.D.S

Dentist (General Practice)

3155 BOOK RD, # 107
NAPERVILLE, IL 60564

Will County (630) 922-1311

DR. PAUL V CAPUTO SR. D.D.S.

Dentist (General Practice)

3155 BOOK RD, SUITE # 107
NAPERVILLE, IL 60564

Will County (630) 922-1311

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 J. Preston Harley's NPI number?

The NPI number for J. Preston Harley is 1578598462. It was assigned to this individual provider in the NPPES registry on July 11, 2006.

Where is J. Preston Harley located?

J. Preston Harley practices at 3155 Book Rd Suite 103, Naperville, IL 60564. The listed phone number is (630) 293-4321.

What is J. Preston Harley's specialty?

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

Is J. Preston Harley enrolled in Medicare?

Yes. J. Preston Harley is registered in the Medicare PECOS enrollment system.

When was this NPI record last updated?

The NPPES record for J. Preston Harley was last updated on September 11, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 13 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.