MATTHEW WILLIAMS, PHD PLLC
NPI 1871968503
Psychologist - Clinical in Killeen, TX

Q: What is Matthew Williams, Phd PLLC's NPI number?

The NPI number for Matthew Williams, Phd PLLC is 1871968503. It was assigned to this organization in the NPPES registry on December 7, 2015.

Q: What is Matthew Williams, Phd PLLC's specialty?

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

Active since December 07, 2015

1711 E CENTRAL TEXAS EXPY STE 106B, KILLEEN, TX 76541(254) 781-2027(254) 781-2028 Get Directions Write a Review

NPPES record last updated: March 31, 2025. Verified against the NPPES registry weekly; last sync: October 25, 2026.

Record update history: Mar 31, 2025, May 5, 2023, Dec 13, 2021 and 2 more (5 updates tracked since 2015).

On this page

About Matthew Williams, Phd Pllc NPPES

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

MATTHEW WILLIAMS, PHD PLLC (NPI 1871968503) is a healthcare organization registered as a clinical in Killeen, Texas and active in the NPI registry since December 2015. The organization lists Matthew Michael Williams, Psychologist/president, as its authorized official.

NPPES Registry Identity

NPI1871968503

Entity TypeOrganization

Primary Taxonomy103TC0700X

Legal Business NameMATTHEW WILLIAMS, PHD PLLC

Location Address1711 E CENTRAL TEXAS EXPY STE 106BKilleen, TX 76541-9145

Mailing Address715 Cactus LnCopperas Cove, TX 76522-7686 · (254) 547-3166

Phone(254) 781-2027

Fax(254) 781-2028

Organization SubpartNo

Authorized OfficialMatthew Michael WilliamsPsychologist/president · (254) 781-2027

Enumeration DateDecember 7, 2015

Last NPPES UpdateMarch 31, 20255 updates tracked since enumeration

NPPES CertifiedMarch 31, 2025

✔ NPI 1871968503 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 TX · 36045

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.

1711 E CENTRAL TEXAS EXPY STE 106B, Killeen, TX 76541

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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 MULTIPLE SINGLE SPECIALTY GROUP

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Blue Cross and Blue Shield of Texas.Insurance ›

Medicare Participation & PECOS CMS

Medicare enrollment and the clinicians who bill Medicare through this organization, from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Matthew Williams, Phd Pllc is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

Clinicians Billing Medicare Through This Organization

Medicare enrollment records show 1 clinician reassigns Medicare billing to Matthew Williams, Phd PLLC, which bills Medicare for the services this clinician delivers.

Clinician (1)

Matthew Williams, PH.D.

Clinical Psychologist

NPI 1962545491

1711 E CENTRAL TEXAS EXPY STE 106B
Killeen, TX 76541

(254) 781-2027

✔ PECOS✔ Accepts MedicareSame address

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 Matthew Williams, Phd PLLC's NPI number?

The NPI number for Matthew Williams, Phd PLLC is 1871968503. It was assigned to this organization in the NPPES registry on December 7, 2015.

Where is Matthew Williams, Phd PLLC located?

Matthew Williams, Phd PLLC is located at 1711 E Central Texas Expy Ste 106B, Killeen, TX 76541. The listed phone number is (254) 781-2027.

What is Matthew Williams, Phd PLLC's specialty?

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

Is Matthew Williams, Phd PLLC enrolled in Medicare?

Yes. Matthew Williams, Phd PLLC is registered in the Medicare PECOS enrollment system.

How many clinicians bill Medicare through Matthew Williams, Phd PLLC?

According to the CMS Revalidation Reassignment List (October 2026 release), 1 clinician (Clinical Psychologist) reassigns their Medicare billing to Matthew Williams, Phd PLLC. 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. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

What insurance does Matthew Williams, Phd PLLC accept?

Health plans from Blue Cross and Blue Shield of Texas list Matthew Williams, Phd PLLC 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 Matthew Williams, Phd PLLC was last updated on March 31, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 19 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.