PAUL J MULLEN PSY D P C
NPI 1154756633
Psychologist - Clinical in Naperville, IL

Q: What is Paul J Mullen Psy D P C's NPI number?

The NPI number for Paul J Mullen Psy D P C is 1154756633. It was assigned to this organization in the NPPES registry on September 4, 2013. The provider is doing business as True North Clinical.

Q: What is Paul J Mullen Psy D P C's specialty?

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

Active since September 04, 2013

1776 LEGACY CIR STE 114, NAPERVILLE, IL 60563(630) 653-1000(630) 653-1010 Get Directions Write a Review

NPPES record last updated: July 25, 2025. Verified against the NPPES registry weekly; last sync: October 18, 2026.

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About Paul J Mullen Psy D P C NPPES

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

PAUL J MULLEN PSY D P C (NPI 1154756633), doing business as True North Clinical, is a healthcare organization registered as a clinical in Naperville, Illinois and active in the NPI registry since September 2013. The organization maintains a secondary practice location in Downers Grove and lists Paul Mullen, Clinical Psychologist, as its authorized official.

NPPES Registry Identity

NPI1154756633

Entity TypeOrganization

Primary Taxonomy103TC0700X

Legal Business NamePAUL J MULLEN PSY D P C

Location Address1776 LEGACY CIR STE 114Naperville, IL 60563-1673

Mailing Address1776 Legacy Cir Ste 114Naperville, IL 60563-1673 · (630) 653-1000 · Fax (630) 653-1010

Phone(630) 653-1000

Fax(630) 653-1010

Organization SubpartNo

Authorized OfficialPaul MullenClinical Psychologist · (630) 653-1000

Enumeration DateSeptember 4, 2013

Last NPPES UpdateJuly 25, 2025

NPPES CertifiedJuly 25, 2025

✔ NPI 1154756633 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 IL · 071-006034

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.

1776 LEGACY CIR STE 114, Naperville, IL 60563

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Other Names 1

Doing Business AsTrue North Clinical

Secondary Practice Location 1

Location 15151 Mochel Dr Ste 305Downers Grove, IL 60515-5078 · Phone (630) 653-1000 · Fax (630) 653-1010

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)

Paul J Mullen Psy D P C is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

Clinicians Billing Medicare Through This Organization

Medicare enrollment records show 2 clinicians reassign Medicare billing to Paul J Mullen Psy D P C, which bills Medicare for the services they deliver. Of these, 1 practice at this address and 2 within 10 miles. They are listed nearest first.

Clinicians, nearest first (2)

Paul Mullen, PSY. D.

Clinical Psychologist

NPI 1588743231

1776 LEGACY CIR STE 114
Naperville, IL 60563

(630) 653-1000

✔ PECOSSame address

Madelyn Schwartz

Mental Health Counselor

NPI 1548467384

199 TOWN SQ SUITE G
Wheaton, IL 60187

(630) 653-1000

✔ PECOS✔ Accepts Medicare2.8 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 Paul J Mullen Psy D P C's NPI number?

The NPI number for Paul J Mullen Psy D P C is 1154756633. It was assigned to this organization in the NPPES registry on September 4, 2013. The provider is doing business as True North Clinical.

Where is Paul J Mullen Psy D P C located?

Paul J Mullen Psy D P C is located at 1776 Legacy Cir Ste 114, Naperville, IL 60563. The listed phone number is (630) 653-1000.

What is Paul J Mullen Psy D P C's specialty?

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

Is Paul J Mullen Psy D P C enrolled in Medicare?

Yes. Paul J Mullen Psy D P C is registered in the Medicare PECOS enrollment system.

How many clinicians bill Medicare through Paul J Mullen Psy D P C?

According to the CMS Revalidation Reassignment List (October 2026 release), 2 clinicians reassign their Medicare billing to Paul J Mullen Psy D P C, in Clinical Psychologist and Mental Health Counselor. 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. Of these, 1 practice at this address and 2 within 10 miles. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

When was this NPI record last updated?

The NPPES record for Paul J Mullen Psy D P C was last updated on July 25, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 14 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.