NPI Portal NPI Lookup & Verification

Dr. Thomas William Treweek, DDS

Dr. Thomas William Treweek is a Dentist provider (Dentist) practicing in Athens, WI, registered in the NPPES registry with NPI 1730397209 since 2007. The credential DDS stands for Doctor of Dental Surgery.

✓ Active NPI ✓ Valid NPI checksum Sole proprietor

NPI 1730397209
Entity type Individual (Type 1)
Name Dr. Thomas William Treweek
Credential DDS
Sex Male
Practice address Athens, WI, 54411
Phone 7152579278
Enumeration date 2007-05-18
Last updated in NPPES 2007-07-08

Street address withheld — NPPES sole-proprietor addresses can be home addresses. See our data policy.

Taxonomy & licenses

Taxonomy code Specialty Primary License State
122300000X Dentist Primary 2368 WI

DDS — Doctor of Dental Surgery: A licensed dentist; DDS and DMD are equivalent dental degrees. About the DDS credential

Other identifiers

Identifier Type State Issuer
2368 Other WI DENTAL LICENSE NUMBER
Copy-ready billing details
Provider: Thomas Treweek, DDS
NPI: 1730397209
Taxonomy: 122300000X (Dentist)
Address: Athens, WI, 54411

Verify this record

Cross-check NPI 1730397209 against the authoritative CMS record: view Dr. Thomas William Treweek on the official NPPES registry .

What is an NPI number?

A National Provider Identifier (NPI) is a unique 10-digit number that CMS assigns to every U.S. healthcare provider and organization under HIPAA. Type 1 NPIs identify individual providers; Type 2 NPIs identify organizations. The NPI appears on insurance claims, prescriptions, and credentialing paperwork, and never changes — even if the provider moves or changes specialty. Read the full guide or validate an NPI number.

Frequently asked questions

Is this the official NPI registry?
No. NPI Portal is a private site built on public CMS NPPES data. The official registry is npiregistry.cms.hhs.gov, operated by CMS.
What specialty is Thomas Treweek?
Thomas Treweek is registered in NPPES with the primary taxonomy of Dentist. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.

Source: CMS NPPES (public data). Snapshot 2026-07-11. Provider record last updated 2007-07-08.