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DR. JOHN EUSTIS WILLIAMS PH.D.
NPI 1346277829
Psychologist - Clinical in Waterloo, IA

Active since June 28, 2006
1310 SOLAR DR, WATERLOO, IA 50701(319) 232-2086 Get Directions Write a Review

NPPES record last updated: April 12, 2021. Verified against the NPPES registry weekly; last sync: August 16, 2026.

Record update history: Apr 12, 2021, Sep 27, 2016 (2 updates tracked since 2016).

About Dr. John Eustis Williams Ph.d. NPPES

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

DR. JOHN EUSTIS WILLIAMS PH.D. (NPI 1346277829) is an individual clinical provider in Waterloo, Iowa, licensed in Iowa (00960) and active in the NPI registry since June 2006.

NPPES Registry Identity

NPI1346277829
Entity TypeIndividualMale
Primary Taxonomy103TC0700X
Provider Legal NameDR. JOHN EUSTIS WILLIAMSCredential: PH.D.
Location Address1310 SOLAR DRWaterloo, IA 50701-2463
Mailing Address1310 Solar DrWaterloo, IA 50701-2463 · (319) 232-2086
Phone(319) 232-2086
Sole ProprietorNo
Enumeration DateJune 28, 2006
Last NPPES UpdateApril 12, 20212 updates tracked since enumeration
NPPES CertifiedApril 12, 2021
✔ NPI 1346277829 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 3

★ Primary SpecialtyPsychologist · ClinicalBehavioral Health & Social Service Providers
Taxonomy Code103TC0700X
License✔ Licensed in IA · 00960
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.
Also ListedPsychologist · Cognitive & BehavioralTaxonomy 103TB0200X
Also ListedPsychologist · HealthTaxonomy 103TH0004X · License 000498 (IA)
1310 SOLAR DR, Waterloo, IA 50701
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Other Identifiers 1

Medicaid0401063IA

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Medica.Insurance ›

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.

NEAL PETERSEN TLMHC
Counselor (Professional)
1310 SOLAR DR
WATERLOO, IA 50701
Black Hawk County (319) 232-2086
RODNEY DIESER
Counselor (Mental Health)
1310 SOLAR DR
WATERLOO, IA 50701
Black Hawk County (319) 232-2086
SHANE SPECK
Marriage & Family Therapist
1310 SOLAR DR
WATERLOO, IA 50701
Black Hawk County (319) 232-2086

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 John Williams's NPI number?

The NPI number for John Williams is 1346277829. It was assigned to this individual provider in the NPPES registry on June 28, 2006.

Where is John Williams located?

John Williams practices at 1310 Solar Dr, Waterloo, IA 50701. The listed phone number is (319) 232-2086.

What is John Williams's specialty?

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

What insurance does John Williams accept?

Health plans from Medica list John Williams as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.

When was this NPI record last updated?

The NPPES record for John Williams was last updated on April 12, 2021. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 5 years 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.