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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. WILLIAM STEWART NANTZ DDS
NPI 1154326569
Dentist - General Practice in Beaumont, TX

Active since June 14, 2005
6790 PHELAN BLVD, BEAUMONT, TX 77706(409) 866-7498(409) 866-7324 Get Directions Write a Review

NPPES record last updated: July 13, 2026. Verified against the NPPES registry weekly; last sync: August 09, 2026.

About Dr. William Stewart Nantz Dds NPPES

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

DR. WILLIAM STEWART NANTZ DDS (NPI 1154326569) is an individual general practice provider in Beaumont, Texas, licensed in Texas (11669) and active in the NPI registry since June 2005.

NPPES Registry Identity

NPI1154326569
Entity TypeIndividualMale
Primary Taxonomy1223G0001X
Provider Legal NameDR. WILLIAM STEWART NANTZCredential: DDS
Location Address6790 PHELAN BLVDBeaumont, TX 77706-5968
Mailing Address6790 Phelan BlvdBeaumont, TX 77706-5968 · (409) 866-7498 · Fax (409) 866-7324
Phone(409) 866-7498
Fax(409) 866-7324
Sole ProprietorNo
Enumeration DateJune 14, 2005
Last NPPES UpdateJuly 13, 2026
✔ NPI 1154326569 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyDentist · General PracticeDental Providers
Taxonomy Code1223G0001X
License✔ Licensed in TX · 11669
Definition
A general dentist is the primary dental care provider for patients of all ages. The general dentist is responsible for the diagnosis, treatment, management and overall coordination of services related to patients' oral health needs.
6790 PHELAN BLVD, Beaumont, TX 77706
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Other Identifiers 2

OtherL1508TX · Blue Cross/blue Shield
Other689351United Concordia

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Ambetter from Arizona Complete Health, Ambetter from Arkansas Health & Wellness, Ambetter from Louisiana Healthcare Connections and more.Insurance ›

Other Providers at the Same Location NPPES

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

ROBERT N CHANG DDS PLLC
Dentist (General Practice)
6790 PHELAN BLVD
BEAUMONT, TX 77706
Jefferson County (409) 866-7498

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 William Nantz's NPI number?

The NPI number for William Nantz is 1154326569. It was assigned to this individual provider in the NPPES registry on June 14, 2005.

Where is William Nantz located?

William Nantz practices at 6790 Phelan Blvd, Beaumont, TX 77706. The listed phone number is (409) 866-7498.

What is William Nantz's specialty?

The primary specialty registered for this NPI is Dentist, specializing in General Practice, with taxonomy code 1223G0001X.

What insurance does William Nantz accept?

Health plans from Ambetter Health, Ambetter from Arizona Complete Health, Ambetter from Arkansas Health & Wellness, Ambetter from Louisiana Healthcare Connections and Ambetter from Superior HealthPlan and 13 other insurers list William Nantz 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 William Nantz 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 31 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.