1. Home
  2. Directory
  3. Maryland
  4. Chevy Chase
  5. Psychologist
  6. NPI Profile

DR. KATHLEEN NADEAU PH.D.
NPI 1083736607
Psychologist - Clinical in Chevy Chase, MD

Active since April 04, 2007Opted out of Medicare · through Jan 1, 2028
4701 WILLARD AVE APT 1235, CHEVY CHASE, MD 20815(301) 404-5186 Get Directions Write a Review

NPPES record last updated: April 17, 2026. Verified against the NPPES registry weekly; last sync: August 09, 2026.

About Dr. Kathleen Nadeau Ph.d. NPPES

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

DR. KATHLEEN NADEAU PH.D. (NPI 1083736607) is an individual clinical provider in Chevy Chase, Maryland, licensed in Maryland (1188) and active in the NPI registry since April 2007. She has opted out of Medicare through January 1, 2028 and remains eligible to order and refer.

NPPES Registry Identity

NPI1083736607
Entity TypeIndividualFemale
Primary Taxonomy103TC0700X
Provider Legal NameDR. KATHLEEN NADEAUCredential: PH.D.
Location Address4701 WILLARD AVE APT 1235Chevy Chase, MD 20815-4627
Mailing Address4701 Willard Ave Apt 1235Chevy Chase, MD 20815-4627 · (301) 404-5186
Phone(301) 404-5186
Sole ProprietorYes
Enumeration DateApril 4, 2007
Last NPPES UpdateApril 17, 2026
NPPES CertifiedApril 17, 2026
✔ NPI 1083736607 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 MD · 1188
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.
4701 WILLARD AVE APT 1235, Chevy Chase, MD 20815
Open in Google Maps ↗

Other Names 1

Professional Name (2)Dr. Kathleen Nadeau Teegarden Ph.d.

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. Kathleen Nadeau Ph.d. 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 January 1, 2016 through January 1, 2028.

Opt-Out Effective DateJanuary 1, 2016
Opt-Out In Effect ThroughJanuary 1, 2028Opt-out affidavits renew automatically every two years unless cancelled
Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment– Home Health Agency– Power Mobility DevicesAn opted-out provider can still order and refer for Medicare patients in the categories marked above, even though their own services are not covered.

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 20815 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.

New Patient
$194.86 typical visit price
range $65.18 – $194.86
Typical copayment $48.71 (range $16.29 – $48.71)
Most-billed visit code 99205
Established Patient
$113.72 typical visit price
range $21.40 – $158.88
Typical copayment $28.43 (range $5.35 – $39.72)
Most-billed visit code 99214
Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

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 Kathleen Nadeau's NPI number?

The NPI number for Kathleen Nadeau is 1083736607. It was assigned to this individual provider in the NPPES registry on April 4, 2007. The provider is also known as Dr. Kathleen Nadeau Teegarden Ph.D..

Where is Kathleen Nadeau located?

Kathleen Nadeau practices at 4701 Willard Ave Apt 1235, Chevy Chase, MD 20815. The listed phone number is (301) 404-5186.

What is Kathleen Nadeau's specialty?

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

Is Kathleen Nadeau enrolled in Medicare?

No. Kathleen Nadeau has opted out of Medicare through January 1, 2028. Care is provided under private contracts, and Medicare does not pay for services furnished by providers who have opted out. The provider remains eligible to order and refer services for Medicare patients.

When was this NPI record last updated?

The NPPES record for Kathleen Nadeau was last updated on April 17, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 3 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.