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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 ROBERT MACHAK D.D.S.
NPI 1790752020
Dentist - General Practice in Omro, WI

Active since March 06, 2006
123 W MAIN ST, OMRO, WI 54963(920) 685-5893(920) 685-7375 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 Robert Machak D.d.s. NPPES

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

DR. THOMAS ROBERT MACHAK D.D.S. (NPI 1790752020) is an individual general practice provider in Omro, Wisconsin, licensed in Wisconsin (3974) and active in the NPI registry since March 2006.

NPPES Registry Identity

NPI1790752020
Entity TypeIndividualMale
Primary Taxonomy1223G0001X
Provider Legal NameDR. THOMAS ROBERT MACHAKCredential: D.D.S.
Location Address123 W MAIN STOmro, WI 54963-1333
Mailing Address123 W Main StOmro, WI 54963-1333 · (920) 685-5893 · Fax (920) 685-7375
Phone(920) 685-5893
Fax(920) 685-7375
Sole ProprietorNo
Enumeration DateMarch 6, 2006
Last NPPES UpdateJuly 13, 2026
✔ NPI 1790752020 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 · 3974
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.
123 W MAIN ST, Omro, WI 54963
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Accepted Insurance

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

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 Machak's NPI number?

The NPI number for Thomas Machak is 1790752020. It was assigned to this individual provider in the NPPES registry on March 6, 2006.

Where is Thomas Machak located?

Thomas Machak practices at 123 W Main St, Omro, WI 54963. The listed phone number is (920) 685-5893.

What is Thomas Machak's specialty?

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

What insurance does Thomas Machak accept?

Health plans from Blue Cross and Blue Shield of Montana, Blue Cross and Blue Shield of Oklahoma, Blue Cross and Blue Shield of Texas, Delta Dental of Wisconsin, Inc. and Dominion National and 2 other insurers list Thomas Machak 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 Machak 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 29 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.