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Recently Updated NPI Information — some details in this NPI profile have been updated in the NPI registry within the last 60 days.

DR. MARY ELLEN BRATU
NPI 1396783767
Psychologist - Clinical in Naperville, IL

Active since June 04, 2006Opted out of Medicare · through Apr 1, 2028
1555 N NAPERVILLE WHEATON RD, SUITE 104, NAPERVILLE, IL 60563(630) 416-8440 Get Directions Write a Review

NPPES record last updated: July 13, 2026. Verified against the NPPES registry weekly; last sync: August 02, 2026.

About Dr. Mary Ellen Bratu NPPES

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

DR. MARY ELLEN BRATU (NPI 1396783767) is an individual clinical provider in Naperville, Illinois and active in the NPI registry since June 2006. She has opted out of Medicare through April 1, 2028.

NPPES Registry Identity

NPI1396783767
Entity TypeIndividualFemale
Primary Taxonomy103TC0700X
Provider Legal NameDR. MARY ELLEN BRATU
Location Address1555 N NAPERVILLE WHEATON RD, SUITE 104Naperville, IL 60563-1557
Mailing Address1555 N Naperville Wheaton Rd, Suite 104Naperville, IL 60563-1557 · (630) 416-8440
Phone(630) 416-8440
Sole ProprietorNo
Enumeration DateJune 4, 2006
Last NPPES UpdateJuly 13, 2026
✔ NPI 1396783767 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyPsychologist · ClinicalBehavioral Health & Social Service Providers
Taxonomy Code103TC0700X
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.
1555 N NAPERVILLE WHEATON RD, Naperville, IL 60563
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Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

ⓘ

Opted out of Medicare

Dr. Mary Ellen Bratu has filed a Medicare opt-out affidavit. Services are provided under private contract between the provider and the patient, and are not billed to or reimbursed by Medicare. The opt-out is on file from April 1, 2024 through April 1, 2028.

Opt-Out Effective DateApril 1, 2024
Opt-Out In Effect ThroughApril 1, 2028Opt-out affidavits renew automatically every two years unless cancelled

Other Providers at the Same Location NPPES 7

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

MS. JANET ANN GREIF LCSW
Social Worker (Clinical)
1555 N NAPERVILLE WHEATON RD, SUITE 111
NAPERVILLE, IL 60563
Dupage County (630) 258-2133
DR. CHAD D WASSON D.C.
Chiropractor (Rehabilitation)
1555 N NAPERVILLE WHEATON RD, SUITE 206
NAPERVILLE, IL 60563
Dupage County (630) 848-1708
MARY ELLEN BRATU PSYD PC
Psychologist
1555 N NAPERVILLE WHEATON RD, SUITE 104
NAPERVILLE, IL 60563
Dupage County (630) 416-8440
DR. TRACY P LEUNG PSYD
Psychologist (Clinical)
1555 N NAPERVILLE WHEATON RD, #104
NAPERVILLE, IL 60563
Dupage County (630) 640-6501
DR. DAVID DUNCAN PSY.D.
Psychologist (Clinical)
1555 N NAPERVILLE WHEATON RD, #115
NAPERVILLE, IL 60563
Dupage County (630) 375-7634
MRS. ANTOINETTE JOSEPHINA ZUCHEL LCPC
Counselor (Mental Health)
1555 N NAPERVILLE WHEATON RD, STE 103
NAPERVILLE, IL 60563
Dupage County (630) 415-0343
DR. MARGARET WEHRENBERG PSY.D.
Psychologist
1555 N NAPERVILLE WHEATON RD, SUITE 103
NAPERVILLE, IL 60563
Dupage County (630) 961-2854

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 Mary Ellen Bratu's NPI number?

The NPI number for Mary Ellen Bratu is 1396783767. It was assigned to this individual provider in the NPPES registry on June 4, 2006.

Where is Mary Ellen Bratu located?

Mary Ellen Bratu practices at 1555 N Naperville Wheaton Rd Suite 104, Naperville, IL 60563. The listed phone number is (630) 416-8440.

What is Mary Ellen Bratu's specialty?

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

Is Mary Ellen Bratu enrolled in Medicare?

No. Mary Ellen Bratu has opted out of Medicare through April 1, 2028. Care is provided under private contracts, and Medicare does not pay for services furnished by providers who have opted out.

When was this NPI record last updated?

The NPPES record for Mary Ellen Bratu was last updated on July 13, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 28 days 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.