Recently Updated NPI Information — some details in this NPI profile have been updated in the NPI registry within the last 30 days.

DR. JANET KATHERINE WILLER PH.D.
NPI 1982686531
Psychologist - Clinical in Chicago, IL

Q: What is the provider's specialty?

The provider's specialty is Psychologist with taxonomy code 103TC0700X and a focus in Clinical.

Active since November 18, 2005Opted out of Medicare · through May 29, 2027

4753 N BROADWAY ST, SUITE 530, CHICAGO, IL 60640(774) 859-1822(773) 275-2252 Get Directions Write a Review

NPPES record last updated: July 13, 2026. Verified against the NPPES registry weekly; last sync: July 19, 2026.

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About Dr. Janet Katherine Willer Ph.d. NPPES

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

DR. JANET KATHERINE WILLER PH.D. (NPI 1982686531) is an individual clinical provider in Chicago, Illinois and active in the NPI registry since November 2005. She has opted out of Medicare through May 29, 2027.

NPPES Registry Identity

NPI1982686531

Entity TypeIndividualFemale

Primary Taxonomy103TC0700X

Provider Legal NameDR. JANET KATHERINE WILLERCredential: PH.D.

Location Address4753 N BROADWAY ST, SUITE 530Chicago, IL 60640-5266

Mailing Address4753 N Broadway St, Suite 530Chicago, IL 60640-5266 · (774) 859-1822 · Fax (773) 275-2252

Phone(774) 859-1822

Fax(773) 275-2252

Sole ProprietorNo

Enumeration DateNovember 18, 2005

Last NPPES UpdateJuly 13, 2026

✔ NPI 1982686531 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.

4753 N BROADWAY ST, Chicago, IL 60640

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Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

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Opted out of Medicare

Dr. Janet Katherine Willer 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 May 29, 2023 through May 29, 2027.

Opt-Out Effective DateMay 29, 2023

Opt-Out In Effect ThroughMay 29, 2027Opt-out affidavits renew automatically every two years unless cancelled