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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. THOMAS G WILLIAMS DDS
NPI 1386607141
Dentist - General Practice in Richland Center, WI

Active since April 11, 2006PECOS Enrolled
100 N CHURCH ST, RICHLAND CENTER, WI 53581(608) 647-3993(608) 647-7327 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. Thomas G Williams Dds NPPES

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

DR. THOMAS G WILLIAMS DDS (NPI 1386607141) is an individual general practice provider in Richland Center, Wisconsin, licensed in Wisconsin (3222) and active in the NPI registry since April 2006. He is enrolled in Medicare PECOS.

NPPES Registry Identity

NPI1386607141
Entity TypeIndividualMale
Primary Taxonomy1223G0001X
Provider Legal NameDR. THOMAS G WILLIAMSCredential: DDS
Location Address100 N CHURCH STRichland Center, WI 53581-2250
Mailing Address350 W 6th StRichland Center, WI 53581-1659 · (608) 647-2031
Phone(608) 647-3993
Fax(608) 647-7327
Sole ProprietorNo
Enumeration DateApril 11, 2006
Last NPPES UpdateJuly 13, 2026
✔ NPI 1386607141 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyDentist · General PracticeDental Providers
Taxonomy Code1223G0001X
License✔ Licensed in WI · 3222
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.
100 N CHURCH ST, Richland Center, WI 53581
Open in Google Maps ↗

Other Identifiers 1

Medicaid33456100WI

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Anthem Blue Cross and Blue Shield, Blue Cross and Blue Shield of Montana, Blue Cross and Blue Shield of Oklahoma and more.Insurance ›

Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Dr. Thomas G Williams Dds is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment✔ Home Health Agency– Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 53581 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
$82.92 typical visit price
range $53.90 – $163.24
Typical copayment $20.73 (range $13.47 – $40.81)
Most-billed visit code 99203
Established Patient
$67.37 typical visit price
range $17.40 – $133.76
Typical copayment $16.84 (range $4.35 – $33.44)
Most-billed visit code 99213
Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

Other Providers at the Same Location NPPES 5

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

KATHRYN ZANG
Dentist
100 N CHURCH ST
RICHLAND CENTER, WI 53581
Richland County (608) 647-3993
DR. THOMAS JAMES CHITWOOD DDS
Dentist (General Practice)
100 N CHURCH ST
RICHLAND CENTER, WI 53581
Richland County (608) 647-3993
DR. ANNE LYNETTE HAGENSTON D.D.S.
Dentist (General Practice)
100 N CHURCH ST
RICHLAND CENTER, WI 53581
Richland County (608) 647-3993
DR. DANIEL R PEARCE DDS
Dentist (General Practice)
100 N CHURCH ST
RICHLAND CENTER, WI 53581
Richland County (608) 647-3993
WILLIAMS & PEARCE FAMILY DENTAL SC
Dentist
100 N CHURCH ST
RICHLAND CENTER, WI 53581
Richland County (608) 647-3993

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 Thomas Williams's NPI number?

The NPI number for Thomas Williams is 1386607141. It was assigned to this individual provider in the NPPES registry on April 11, 2006.

Where is Thomas Williams located?

Thomas Williams practices at 100 N Church St, Richland Center, WI 53581. The listed phone number is (608) 647-3993.

What is Thomas Williams's specialty?

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

Is Thomas Williams enrolled in Medicare?

Yes. Thomas Williams is registered in the Medicare PECOS enrollment system.

What insurance does Thomas Williams accept?

Health plans from Anthem Blue Cross and Blue Shield, Blue Cross and Blue Shield of Montana, Blue Cross and Blue Shield of Oklahoma, Blue Cross and Blue Shield of Texas and Delta Dental of Wisconsin, Inc. and 2 other insurers list Thomas 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 Thomas Williams 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 33 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.